This research was supported by the National Institute of Mental Health MH 086960-01A1 (Christa K. McIntyre).

The authors have no competing interests or conflicts.

Nous présentons ici un protocole qui est utilisé pour faciliter l&#39;extinction de la peur conditionnée au cours d&#39;une seule séance d&#39;exposition à des indices conditionné 19 et de moduler la plasticité dans la voie entre le cortex infralimbic et l&#39;amygdale basolatérale qui peuvent servir de médiateur extinction apprentissage 20. Une étape cruciale pour le succès de ce protocole est la bonne livraison de VNS pendant la formation de l&#39;extinction. Par conséquent, une atten...

Classique conditionnement de la peur fournit un modèle animal largement utilisé pour étudier la base biologique des troubles anxieux. Au cours de conditionnement de la peur, un stimulus aversif (le stimulus inconditionné, États-Unis, par exemple, un choc électrique) est présenté en conjonction avec un stimulus neutre, comme un ton et / ou un contexte (le stimulus conditionné; CS). Au cours de conditionnement de la peur, les associations entre le CS et les États-Unis sont formés. Finalement, la présentation de la CS seul déclenche une réaction de peur (la réponse conditionnée; CR). Dans la crainte d&#39;extinction, le CS est présenté à plusieurs reprises en l&#39;absence des États-Unis, provoquant la CR à diminuer progressivement 1. Ainsi, l&#39;extinction de la peur conditionnée est un processus actif dans lequel les réponses comportementales aux stimuli effrayants neutres sont atténués quand ils prédisent plus les résultats d&#39;aversion. Extinction des réponses conditionnées nécessite la consolidation de nouveaux souvenirs qui sont en concurrence avec les associations savantes. Une caractéristique de troubles anxieux est impaextinction ired 2-4. Ainsi, l&#39;extinction de la peur conditionnée dans des modèles animaux sert de paradigme important à la fois pour l&#39;apprentissage d&#39;inhibition et un modèle de comportement pour le traitement de troubles de l&#39;anxiété humains 5,6. Parce qu&#39;il ya correspondance étroite entre la peur et l&#39;anxiété humaine, on pense que ces études peuvent donner un aperçu de la nature biologique des troubles liés à l&#39;anxiété tels que le trouble de stress post-traumatique et aideront à élaborer des stratégies pour les traiter. Un objectif important de la recherche préclinique est de faciliter l&#39;apprentissage de l&#39;extinction et à induire la plasticité ciblée dans les circuits d&#39;extinction de consolider l&#39;apprentissage de l&#39;extinction. Stimulation du nerf vague (VNS) est une approche minimalement invasive neuroprosthetic qui pourrait être utilisé pour fournir modulation temporelle et spécifique circuit serré de zones du cerveau et des synapses engagés dans une tâche permanente. Une série d&#39;études récentes du groupe de Michael Kilgard à l&#39;Université du Texas à Dallas ontmontré que VNS appariement avec des stimuli sensoriels ou moteurs discrets (par exemple, une tonalité ou un levier de traction) est très efficace dans la promotion de la plasticité corticale pour traiter les acouphènes 7, ou pour surmonter des déficits moteurs après un AVC 8-10. En outre, non contingent VNS qui se produit au sein d&#39;une fenêtre de temps court après l&#39;apprentissage favorise similaire plasticité corticale et améliore consolidation de la mémoire chez les rats et les humains 11-13. Considérant le rôle du nerf vague dans la voie parasympathique, il est pas surprenant qu&#39;il pourrait participer à la modulation des souvenirs et la plasticité synaptique. Hautement événements émotionnels ont tendance à produire des souvenirs forts que des mémoires non-émotionnels. Cela est probablement dû à l&#39;influence des hormones du stress sur la consolidation de la mémoire. Posttraining administration de l&#39;adrénaline hormone de stress améliore consolidation de la mémoire chez les animaux humains et non-humains, mais l&#39;adrénaline ne traverse pas la barrière hémato-barrière 14, 15 </sup&gt;. Par conséquent, la libération d&#39;adrénaline induite par le stress doit influer sur le cerveau indirectement à améliorer la consolidation de la mémoire. Solides preuves médicales révèlent que le nerf vague peut être le lien entre l&#39;adrénaline en circulation et le cerveau. Miyashita et Williams 16 ont trouvé que l&#39;administration systémique d&#39;adrénaline augmenté nerf vague tir, et a augmenté les niveaux de noradrénaline dans l&#39;amygdale 17. L&#39;administration systémique d&#39;adrénaline ne renforce pas la consolidation de la mémoire lorsque les récepteurs β-adrénergiques sont bloqués dans l&#39;amygdale 18 suggérant que le nerf vague joue un rôle dans la voie qui tourne expériences suscitant émotionnellement en mémoire à long terme. Ainsi, le jumelage avec la formation VNS a le potentiel d&#39;améliorer les changements du cerveau qui soutiennent consolidation de la mémoire et de l&#39;exposition à des indices conditionnés en l&#39;absence de renfort améliore la consolidation de l&#39;apprentissage d&#39;extinction chez les rats 19,20. Nous décrivons ici l&#39;utilisation d&#39;un VNSoutil pour promouvoir sa plasticité corticale et de faciliter l&#39;extinction d&#39;une réponse de la peur conditionnée.

<table border="0" cellpadding="0" cellspacing="0">
	<tbody>
		<tr>
			<td>Alcohol</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Atropine</td>
			<td>Fisher</td>
			<td>A0132-5G</td>
			<td></td>
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		<tr>
			<td>Betadine</td>
			<td>Henry Schein</td>
			<td>69066950</td>
			<td></td>
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			<td>Hydrogen peroxide&#160;</td>
			<td>CVS</td>
			<td>209478</td>
			<td></td>
		</tr>
		<tr>
			<td>Ketamine</td>
			<td>Henry Schein&#160;</td>
			<td>1129300</td>
			<td></td>
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		<tr>
			<td>Marcaine</td>
			<td>Henry Schein</td>
			<td>6312615</td>
			<td></td>
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		<tr>
			<td>Mineral Oil</td>
			<td>CVS</td>
			<td>152355</td>
			<td></td>
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			<td>Neosporin</td>
			<td>CVS</td>
			<td>629451</td>
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			<td>Oxygen</td>
			<td>Home Depot</td>
			<td>304179</td>
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			<td>Pennicillin</td>
			<td>Fisher</td>
			<td>PENNA-10MU</td>
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			<td>Propane</td>
			<td>Home Depot</td>
			<td>304182</td>
			<td></td>
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			<td>Xylazine</td>
			<td>Henry Schein</td>
			<td>4019308</td>
			<td></td>
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		<tr>
			<td></td>
			<td></td>
			<td></td>
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			<td></td>
			<td></td>
			<td></td>
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			<td>Tools</td>
			<td></td>
			<td></td>
			<td></td>
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			<td>Jewelery Torch</td>
			<td>Smith Equipment</td>
			<td>23-1001D</td>
			<td></td>
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			<td>Sewing Needle</td>
			<td>Walgreens</td>
			<td>441831</td>
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			<td>#5 Forceps (2)</td>
			<td>Fine Science Tools</td>
			<td>11254-20</td>
			<td></td>
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			<td>Soldering Iron</td>
			<td>Home Depot&#160;</td>
			<td>203525863</td>
			<td></td>
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		<tr>
			<td>AmScope SM-4TX-144A 3.5X-45X Circuit Board Boom Stereo Microscope + 144 LED</td>
			<td>AmScope</td>
			<td>SM-4TX-144A</td>
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			<td>Helping Hands</td>
			<td>A-M Systems&#160;</td>
			<td>726200</td>
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		<tr>
			<td>Scalpel Blade Holder</td>
			<td>Fine Science Tools</td>
			<td>10003-12</td>
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			<td>Metal File</td>
			<td>Home Depot</td>
			<td>6601</td>
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			<td>Ruler</td>
			<td>Home Deopt</td>
			<td>202035324</td>
			<td></td>
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			<td>Curved Hemostats&#160;</td>
			<td>Fine Science Tools</td>
			<td>130009-12</td>
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			<td>Fine Scissors</td>
			<td>Fine Science Tools</td>
			<td>14058-09</td>
			<td></td>
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			<td>Spatula</td>
			<td>Fine Science Tools</td>
			<td></td>
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			<td>Small Screwdriver</td>
			<td>Home Depot</td>
			<td>646507</td>
			<td></td>
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			<td>Magnetic Fixator Retraction System</td>
			<td>Fine Science Tools</td>
			<td>18200-04, 18200-01, 18200-05</td>
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			<td>Heating Pad</td>
			<td>Walgreens</td>
			<td>30294</td>
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		<tr>
			<td>Clippers</td>
			<td>Walgreens</td>
			<td>277966</td>
			<td></td>
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		<tr>
			<td>Sharpie</td>
			<td>Staples</td>
			<td>125328</td>
			<td></td>
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		<tr>
			<td>Ring Forceps</td>
			<td>Fine Science Tools</td>
			<td>11103-09</td>
			<td></td>
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		<tr>
			<td>Custom Micropipette Glass Tools (J shape and Straight) - Borosilicate glass</td>
			<td>Sutter Instrument</td>
			<td>B150-110-10</td>
			<td></td>
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		<tr>
			<td>Adson Forceps</td>
			<td>Fine Science Tools</td>
			<td>11006-12</td>
			<td></td>
		</tr>
		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Cuffs</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Tubing</td>
			<td>Braintree Scientific Inc</td>
			<td>MRE-065</td>
			<td></td>
		</tr>
		<tr>
			<td>Platinum Iridium Wire</td>
			<td>Medwire</td>
			<td>10IR9/49T</td>
			<td></td>
		</tr>
		<tr>
			<td>Gold Pins</td>
			<td>Mill-Max</td>
			<td>1001-0-15-15-30-27-04-0</td>
			<td></td>
		</tr>
		<tr>
			<td>Suture Thread</td>
			<td>Henry Schein</td>
			<td>100-5797</td>
			<td></td>
		</tr>
		<tr>
			<td>22 G Needles</td>
			<td>Fisher&#160;</td>
			<td>14-815-525</td>
			<td></td>
		</tr>
		<tr>
			<td>Paper Tape</td>
			<td>Fisher&#160;</td>
			<td>03-411-602</td>
			<td></td>
		</tr>
		<tr>
			<td>Solder</td>
			<td>Home Deopt</td>
			<td>327793</td>
			<td></td>
		</tr>
		<tr>
			<td>Flux&#160;</td>
			<td>Home Deopt</td>
			<td>300142</td>
			<td></td>
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		<tr>
			<td>Scalpel Blade, 10 or 15</td>
			<td>Stoelting</td>
			<td>52173-10</td>
			<td></td>
		</tr>
		<tr>
			<td>Silastic Laboratory Tubing .51 mm ID x .94 mm OD</td>
			<td>Fisher&#160;</td>
			<td>508-002</td>
			<td></td>
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		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td></td>
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		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Headcaps</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Connector Pieces (male)</td>
			<td>Omnetics Connector Corporation</td>
			<td>A25001-004</td>
			<td></td>
		</tr>
		<tr>
			<td>Headcap pieces (female)</td>
			<td>Omnetics Connector Corporation</td>
			<td>A24001-004</td>
			<td></td>
		</tr>
		<tr>
			<td>Teets Dental Acrylic, Liquid and Powder</td>
			<td>A-M Systems</td>
			<td>525000, 526000</td>
			<td></td>
		</tr>
		<tr>
			<td>26 Gauge Solid Copper Wire</td>
			<td>Staples</td>
			<td>1016882 &#160;</td>
			<td></td>
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		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td></td>
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			<td>Surgery</td>
			<td></td>
			<td></td>
			<td></td>
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		<tr>
			<td>Bone Screws</td>
			<td>Stoelting+CB33:C61</td>
			<td>51457</td>
			<td></td>
		</tr>
		<tr>
			<td>Scalpel Blades, 10 or 15</td>
			<td>Stoelting</td>
			<td>52173-10</td>
			<td></td>
		</tr>
		<tr>
			<td>1 ml syringes</td>
			<td>Fisher</td>
			<td>14-826-261</td>
			<td></td>
		</tr>
		<tr>
			<td>22 G Needles</td>
			<td>Fisher&#160;</td>
			<td>14-815-525</td>
			<td></td>
		</tr>
		<tr>
			<td>27 G Needles</td>
			<td>Fisher</td>
			<td>14-826-48</td>
			<td></td>
		</tr>
		<tr>
			<td>2&#34; x 2&#34; Gauze</td>
			<td>Fisher</td>
			<td>22-362-178</td>
			<td></td>
		</tr>
		<tr>
			<td>Swabs</td>
			<td>Fisher</td>
			<td>19-120-472</td>
			<td></td>
		</tr>
		<tr>
			<td>Puppy Pads</td>
			<td>PetCo</td>
			<td>1310747</td>
			<td></td>
		</tr>
		<tr>
			<td>Kim Wipes</td>
			<td>Fisher</td>
			<td>06-666-A</td>
			<td></td>
		</tr>
		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td colspan="2">Chamber and Behavioral Setting&#160;</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Husky Metal Front Base Cabinet (30WX19DX34H)</td>
			<td>Home Depot</td>
			<td>100607961</td>
			<td></td>
		</tr>
		<tr>
			<td>Quiet Barrier&#173; HD Soundproofing Material (Sheet) (PSA)</td>
			<td>soundproofcow.com</td>
			<td>10203041</td>
			<td></td>
		</tr>
		<tr>
			<td>Convoluted Acoustic Foam Panel</td>
			<td>soundproofcow.com</td>
			<td>10432400</td>
			<td></td>
		</tr>
		<tr>
			<td>Isolated Pulse Stimulator Model 2100</td>
			<td>A-M Systems</td>
			<td>720000</td>
			<td></td>
		</tr>
		<tr>
			<td>Digital Camera - Logitech Webcam C210</td>
			<td>Logitech</td>
			<td>B003LVZO88</td>
			<td></td>
		</tr>
		<tr>
			<td>MatLab</td>
			<td>Mathworks.com</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Sinometer 10MHz Single Channel Oscilloscope</td>
			<td>Sinometer</td>
			<td>CQ5010C</td>
			<td></td>
		</tr>
		<tr>
			<td>OxyLED T-01 DIY Stick-on Anywhere 4-LED Touch Tap Light</td>
			<td>OXYLED</td>
			<td>B00GD8OKY0</td>
			<td></td>
		</tr>
		<tr>
			<td>5k ohm potentiomter</td>
			<td>Alpha Electronics</td>
			<td>B00CTWDHIO</td>
			<td></td>
		</tr>
		<tr>
			<td>Extech 407730 40-to-130-Decibel Digital Sound Level Meter</td>
			<td>Extech Instruments</td>
			<td>B000EWY67W</td>
			<td></td>
		</tr>
		<tr>
			<td>DSCK-C Dual Output, scrambled shocker</td>
			<td>Kinder Scientific Co</td>
			<td></td>
			<td></td>
		</tr>
	</tbody>
</table>

vagus nerve stimulation as a tool to induce plasticity in pathways relevant for extinction learning

Extinction describes the process of attenuating behavioral responses to neutral stimuli when they no longer provide the reinforcement that has been maintaining the behavior. There is close correspondence between fear and human anxiety, and therefore studies of extinction learning might provide insight into the biological nature of anxiety-related disorders such as post-traumatic stress disorder, and they might help to develop strategies to treat them. Preclinical research aims to aid extinction learning and to induce targeted plasticity in extinction circuits to consolidate the newly formed memory. Vagus nerve stimulation (VNS) is a powerful approach that provides tight temporal and circuit-specific release of neurotransmitters, resulting in modulation of neuronal networks engaged in an ongoing task. VNS enhances memory consolidation in both rats and humans, and pairing VNS with exposure to conditioned cues enhances the consolidation of extinction learning in rats. Here, we provide a detailed protocol for the preparation of custom-made parts and the surgical procedures required for VNS in rats. Using this protocol we show how VNS can facilitate the extinction of conditioned fear responses in an auditory fear conditioning task. In addition, we provide evidence that VNS modulates synaptic plasticity in the pathway between the infralimbic (IL) medial prefrontal cortex and the basolateral complex of the amygdala (BLA), which is involved in the expression and modulation of extinction memory.

Cet article donne des exemples de résultats qui peuvent être obtenus en utilisant VNS apprentissage en combinaison avec d&#39;extinction à réduire l&#39;expression de la réaction de peur conditionnée chez le rat. Pour les jours 1 et 2 (auditif conditionnement de la peur), les rats ont été formés sur une tâche peur de conditionnement auditif dans lequel footshocks ont été jumelés avec un ton. Le Jour 3 (Pré Traitement Test), les tons ont été présentés en l&#39;absence de footshocks pour mesurer les nive...

Watch this Scientific Journal Video about Vagus Nerve Stimulation as a Tool to Induce Plasticity in Pathways Relevant for Extinction Learning at JoVE.com

Vagus Nerve Stimulation as a Tool to Induce Plasticity in Pathways Relevant for Extinction Learning

Stimulation du nerf vague (VNS) a émergé comme un outil pour induire la plasticité synaptique ciblée dans le cerveau antérieur de modifier une gamme de comportements. Ce protocole décrit comment mettre en œuvre VNS pour faciliter la consolidation de la mémoire la peur de l&#39;extinction.

Stimulation du nerf vague comme un outil pour induire la plasticité dans les voies pertinentes pour l&#39;extinction d&#39;apprentissage

Extinction describes the process of attenuating behavioral responses to neutral stimuli when they no longer provide the reinforcement that has been ...

vagus-nerve-stimulation-as-tool-to-induce-plasticity-pathways

Research

JoVE Journal

Behavior

23.0K vues.  The University of Texas at Dallas.  Stimulation du nerf vague (VNS) a émergé comme un outil pour induire la plasticité synaptique ciblée dans le cerveau antérieur de modifier une gamme de comportements. Ce protocole décrit comment mettre en œuvre VNS pour faciliter la consolidation de la mémoire la peur de l'extinction. 

Vidéo: Vagus Nerve Stimulation as a Tool to Induce Plasticity in Pathways Relevant for Extinction Learning

The Crossmodal Congruency Task as a Means to Obtain an Objective Behavioral Measure in the Rubber Hand Illusion Paradigm

The rubber hand illusion (RHI) is a popular experimental paradigm. Participants view touch on an artificial rubber hand while the participants' own hidden hand is touched. If the viewed and felt touches are given at the same time then this is sufficient to induce the compelling experience that the rubber hand is one's own hand. The RHI can be used to investigate exactly how the brain constructs distinct body representations for one's own body. Such representations are crucial for successful interactions with the external world. To obtain a subjective measure of the RHI, researchers typically ask participants to rate statements such as "I felt as if the rubber hand were my hand". Here we demonstrate how the crossmodal congruency task can be used to obtain an objective behavioral measure within this paradigm.
The variant of the crossmodal congruency task we employ involves the presentation of tactile targets and visual distractors. Targets and distractors are spatially congruent (i.e. same finger) on some trials and incongruent (i.e. different finger) on others. The difference in performance between incongruent and congruent trials - the crossmodal congruency effect (CCE) - indexes multisensory interactions. Importantly, the CCE is modulated both by viewing a hand as well as the synchrony of viewed and felt touch which are both crucial factors for the RHI.
The use of the crossmodal congruency task within the RHI paradigm has several advantages. It is a simple behavioral measure which can be repeated many times and which can be obtained during the illusion while participants view the artificial hand. Furthermore, this measure is not susceptible to observer and experimenter biases. The combination of the RHI paradigm with the crossmodal congruency task allows in particular for the investigation of multisensory processes which are critical for modulations of body representations as in the RHI.

We demonstrate how an objective measure can be employed in the widely employed rubber hand illusion paradigm. This measure is obtained by modifying the well-established crossmodal congruency task. This task allows the investigation of multisensory processes which are critical for modulations of body representations as in the rubber hand illusion.

Le groupe de congruence intermodale comme un moyen d&#39;obtenir une mesure comportementale objectif dans le caoutchouc main Illusion Paradigm

The rubber hand illusion (RHI) is a popular experimental paradigm. Participants view touch on an artificial rubber hand while the participants' own hidden ...

Recherche

Sciences du comportement

Quantifying Learning in Young Infants: Tracking Leg Actions During a Discovery-learning Task

Task-specific actions emerge from spontaneous movement during infancy. It has been proposed that task-specific actions emerge through a discovery-learning process. Here a method is described in which 3-4 month old infants learn a task by discovery and their leg movements are captured to quantify the learning process. This discovery-learning task uses an infant activated mobile that rotates and plays music based on specified leg action of infants. Supine infants activate the mobile by moving their feet vertically across a virtual threshold. This paradigm is unique in that as infants independently discover that their leg actions activate the mobile, the infants&#8217; leg movements are tracked using a motion capture system allowing for the quantification of the learning process. Specifically, learning is quantified in terms of the duration of mobile activation, the position variance of the end effectors (feet) that activate the mobile, changes in hip-knee coordination patterns, and changes in hip and knee muscle torque. This information describes infant exploration and exploitation at the interplay of person and environmental constraints that support task-specific action. Subsequent research using this method can investigate how specific impairments of different populations of infants at risk for movement disorders influence the discovery-learning process for task-specific action.

A method is described in which 3-4 month old infants learn a task by discovery and their leg movements are captured to quantify the learning process.

Quantifier l&#39;apprentissage chez les jeunes enfants: Suivi Leg Actions Au cours d&#39;une tâche de découverte-learning

Task-specific actions emerge from spontaneous movement during infancy. It has been proposed that task-specific actions emerge through a discovery-learning ...

A Treatment Package without Escape Extinction to Address Food Selectivity

Feeding difficulties and feeding disorders are a commonly occurring problem for young children, particularly children with developmental delays including autism. Behavior analytic interventions for the treatment of feeding difficulties oftentimes include escape extinction as a primary component of treatment. The use of escape extinction, while effective, may be problematic as it is also associated with the emergence of challenging behavior (e.g., extinction burst). Such challenging behavior may be an acceptable side effect in treatment cases where feeding problems are severe and chronic (e.g., failure to thrive). However, in more acute cases (e.g., selective eating), the negative side effect may be unwarranted and undesired. More recent research on the behavioral treatment of food selectivity has begun to evaluate treatments for feeding difficulties that do not include escape extinction (e.g., demand fading, behavioral momentum), with some success. However, research to date reveals individual differences in responsiveness to such treatments and no clear preferable treatment has emerged. This manuscript describes a multi-component treatment package that includes shaping, sequential presentation and simultaneous presentation, for the treatment of food selectivity in four young children with developmental delays. This treatment package extends the literature on the behavioral treatment for food selectivity and offers a multi-component treatment protocol that may be clinically applicable across a range of treatment scenarios and settings.

Feeding difficulties are a common problem for children with developmental disorders, including autism, and behavioral interventions often include escape extinction. Recent research has begun to evaluate treatments that do not include escape extinction. This manuscript describes a multicomponent treatment package that does not use escape extinction to treat feeding difficulties.

Un package traitement sans évasion Extinction de lutte alimentaire Sélectivité

Feeding difficulties and feeding disorders are a commonly occurring problem for young children, particularly children with developmental delays including ...

Combined Shuttle-Box Training with Electrophysiological Cortex Recording and Stimulation as a Tool to Study Perception and Learning

Shuttle-box avoidance learning is a well-established method in behavioral neuroscience and experimental setups were traditionally custom-made; the necessary equipment is now available by several commercial companies. This protocol provides a detailed description of a two-way shuttle-box avoidance learning paradigm in rodents (here Mongolian gerbils; Meriones unguiculatus) in combination with site-specific electrical intracortical microstimulation (ICMS) and simultaneous chronical electrophysiological in vivo recordings. The detailed protocol is applicable to study multiple aspects of learning behavior and perception in different rodent species.
Site-specific ICMS of auditory cortical circuits as conditioned stimuli here is used as a tool to test the perceptual relevance of specific afferent, efferent and intracortical connections. Distinct activation patterns can be evoked by using different stimulation electrode arrays for local, layer-dependent ICMS or distant ICMS sites. Utilizing behavioral signal detection analysis it can be determined which stimulation strategy is most effective for eliciting a behaviorally detectable and salient signal. Further, parallel multichannel-recordings using different electrode designs (surface electrodes, depth electrodes, etc.) allow for investigating neuronal observables over the time course of such learning processes. It will be discussed how changes of the behavioral design can increase the cognitive complexity (e.g. detection, discrimination, reversal learning).

Shuttle-box avoidance learning is well-established in behavioral neuroscience. This protocol describes how shuttle-box learning in rodents can be combined with site-specific electrical intracortical microstimulation (ICMS) and simultaneous chronical in vivo recordings as a tool to study multiple aspects of learning and perception.

Combiné navette-Box formation avec électrophysiologique Cortex enregistrement et la stimulation comme un outil pour étudier perception et l&#39;apprentissage

Shuttle-box avoidance learning is a well-established method in behavioral neuroscience and experimental setups were traditionally custom-made; the ...

Using a Split-belt Treadmill to Evaluate Generalization of Human Locomotor Adaptation

Understanding the mechanisms underlying locomotor learning helps researchers and clinicians optimize gait retraining as part of motor rehabilitation. However, studying human locomotor learning can be challenging. During infancy and childhood, the neuromuscular system is quite immature, and it is unlikely that locomotor learning during early stages of development is governed by the same mechanisms as in adulthood. By the time humans reach maturity, they are so proficient at walking that it is difficult to come up with a sufficiently novel task to study de novo locomotor learning. The split-belt treadmill, which has two belts that can drive each leg at a different speed, enables the study of both short- (i.e., immediate) and long-term (i.e., over minutes-days; a form of motor learning) gait modifications in response to a novel change in the walking environment. Individuals can easily be screened for previous exposure to the split-belt treadmill, thus ensuring that all experimental participants have no (or equivalent) prior experience. This paper describes a typical split-belt treadmill adaptation protocol that incorporates testing methods to quantify locomotor learning and generalization of this learning to other walking contexts. A discussion of important considerations for designing split-belt treadmill experiments follows, including factors like treadmill belt speeds, rest breaks, and distractors. Additionally, potential but understudied confounding variables (e.g., arm movements, prior experience) are considered in the discussion.

We describe a protocol for investigating human locomotor adaptation using the split-belt treadmill, which has two belts that can drive each leg at a different speed. We specifically focus on a paradigm designed to test the generalization of adapted locomotor patterns to different walking contexts (e.g., gait speeds, walking environments).

En utilisant un tapis roulant de courroies pour évaluer la généralisation de l’Adaptation locomotion humaine

Understanding the mechanisms underlying locomotor learning helps researchers and clinicians optimize gait retraining as part of motor rehabilitation. ...

Using a Virtual Store As a Research Tool to Investigate Consumer In-store Behavior

People&#39;s responses to products and/or choice environments are crucial to understanding in-store consumer behaviors. Currently, there are various approaches (e.g., surveys or laboratory settings) to study in-store behaviors, but the external validity of these is limited by their poor capability to resemble realistic choice environments. In addition, building a real store to meet experimental conditions while controlling for undesirable effects is costly and highly difficult. A virtual store developed by virtual reality techniques potentially transcends these limitations by offering the simulation of a 3D virtual store environment in a realistic, flexible, and cost-efficient way. In particular, a virtual store interactively allows consumers (participants) to experience and interact with objects in a tightly controlled yet realistic setting. This paper presents the key elements of using a desktop virtual store to study in-store consumer behavior. Descriptions of the protocol steps to: 1) build the experimental store, 2) prepare the data management program, 3) run the virtual store experiment, and 4) organize and export data from the data management program are presented. The virtual store enables participants to navigate through the store, choose a product from alternatives, and select or return products. Moreover, consumer-related shopping behaviors (e.g., shopping time, walking speed, and number and type of products examined and bought) can also be collected. The protocol is illustrated with an example of a store layout experiment showing that shelf length and shelf orientation influence shopping- and movement-related behaviors. This demonstrates that the use of a virtual store facilitates the study of consumer responses. The virtual store can be especially helpful when examining factors that are costly or difficult to change in real life (e.g., overall store layout), products that are not presently available in the market, and routinized behaviors in familiar environments.

This paper describes the use of a desktop virtual store to create virtual shopping environments to investigate in-store consumer behavior. A description of the protocol to build and run experiments, example results from an experiment concerning store layout, and important considerations when conducting virtual store experiments are presented.

Utilisation d&#39;un magasin virtuel comme outil de recherche pour enquêter sur le comportement des consommateurs en magasin

People&#39;s responses to products and/or choice environments are crucial to understanding in-store consumer behaviors. Currently, there are various ...

Large Volume, Behaviorally-relevant Illumination for Optogenetics in Non-human Primates

This protocol describes a large-volume illuminator, which was developed for optogenetic manipulations in the non-human primate brain. The illuminator is a modified plastic optical fiber with etched tip, such that the light emitting surface area is &#62; 100x that of a conventional fiber. In addition to describing the construction of the large-volume illuminator, this protocol details the quality-control calibration used to ensure even light distribution. Further, this protocol describes techniques for inserting and removing the large volume illuminator. Both superficial and deep structures may be illuminated. This large volume illuminator does not need to be physically coupled to an electrode, and because the illuminator is made of plastic, not glass, it will simply bend in circumstances when traditional optical fibers would shatter. Because this illuminator delivers light over behaviorally-relevant tissue volumes (&#8776; 10 mm3) with no greater penetration damage than a conventional optical fiber, it facilitates behavioral studies using optogenetics in non-human primates.

A protocol to build a tissue penetrating illuminator for delivering light over large volumes with minimal diameter is presented.

Grand Volume, éclairage pertinent sur le plan comportemental pour Optogenetics chez les Primates Non humains

This protocol describes a large-volume illuminator, which was developed for optogenetic manipulations in the non-human primate brain. The illuminator is a ...

Applying an eMASS Customization Program as a Research Tool to Evaluate Consumer Benefits

As many scholars and practitioners study personalization and relationship marketing, it is important to provide personalization such as mass customization through marketing technology. The purpose of this study is to examine how to conduct consumer research using an online survey and analysis of data. This study examines consumers&#39;&#160;perceived benefits while customizing a product as well as emotional product attachment, attitudes toward a customization program, and loyalty intentions in the context of online retailing. In addition, this study investigates how consumer responses are different based on individual characteristics such as fashion innovativeness. An online survey company in South Korea recruited 290 female apparel shoppers who purchased apparel online. To enhance external validity, this study used an existing retail website with a well-established mass customization program. After completing the customization program, participants complete the online questionnaire. Structural equation modeling (SEM) and latent mean analyses (LMAs) are then performed for analyses. This study stresses the importance of testing measurement invariance for mean comparisons. Before the SEM and LMA, this study follows the hierarchy of invariance tests (configural invariance test, metric invariance test, and scalar invariance test), which are not considered by traditional approaches such as ANOVA. These statistical analyses provide applicability of the invariance test procedures and LMA to consumer behaviors. The conclusions of mean differences have integrity and validity because they are guided by a sophisticated statistical procedure to ensure measurement invariance.

Presented here is a protocol to examine consumer responses toward mass customization in the context of online retailing. The protocol details the online survey procedure and how to analyze data using structural equation modeling and group differences using latent mean analyses.

L'application d'un programme de personnalisation eMASS comme outil de recherche pour évaluer les avantages pour les consommateurs

As many scholars and practitioners study personalization and relationship marketing, it is important to provide personalization such as mass customization ...

A Methodology for Capturing Joint Visual Attention Using Mobile Eye-Trackers

With the advent of new technological advances, it is possible to study social interactions at a microlevel with unprecedented accuracy. High frequency sensors, such as eye-trackers, electrodermal activity wristbands, EEG bands, and motion sensors provide observations at the millisecond level. This level of precision allows researchers to collect large datasets on social interactions. In this paper, I discuss how multiple eye-trackers can capture a fundamental construct in social interactions, joint visual attention (JVA). JVA has been studied by developmental psychologists to understand how children acquire language, learning scientists to understand how small groups of learners work together, and social scientists to understand interactions in small teams. This paper describes a methodology for capturing JVA in colocated settings using mobile eye-trackers. It presents some empirical results and discusses implications of capturing microobservations to understand social interactions.

Using multimodal sensors is a promising way to understand the role of social interactions in educational settings. This paper describes a methodology for capturing joint visual attention from colocated dyads using mobile eye-trackers.

Une méthodologie pour capturer l'attention visuelle conjointe à l'aide de eye-trackers mobiles

With the advent of new technological advances, it is possible to study social interactions at a microlevel with unprecedented accuracy. High frequency ...

Simultaneous Monitoring of Wireless Electrophysiology and Memory Behavioral Test as a Tool to Study Hippocampal Neurogenesis

Brainwaves amplitude obtained from electroencephalography (EEG) has been well-recognized as a basis for cognitive capacity, memory, and learning on animals and humans. Adult neurogenesis mechanism is also linked to memory and learning improvement. Traditionally, researchers used to assess learning and memory parameters in rodent models by behavioral tasks. Therefore, the simultaneous monitoring of behavioral changes and EEG is particularly interesting in correlating data between brain activity and task-related behaviors. However, most of the equipment required to perform both studies are either complex, expensive, or uses a wired setup network that hinders the natural animals&#8217; movement. In this study, EEG was recorded with a wireless electrophysiology device along with the execution of a novel object recognition task (NORT). The animal&#8217;s behavior was monitored simultaneously by a video tracking system. Both recordings were analyzed offline by their timestamps which were synched to link EEG signals with the animal&#8217;s actions. Subjects consist of adult Wistar rats after medium-term environmental enrichment treatment. Six skull screw electrodes were fixed in pairs on both hemispheres over frontal, central, and parietal regions and were referenced to an electrode located posterior of the nasal bone. NORT protocol consists of exposing the animal to two identical objects for 10 min. After 2 h and 24 h, one of the objects was replaced with a novel one. Exploration time for each object was monitored by a behavioral tracking software (BTS) and EEG data recording. The analysis of the EEG synced with behavioral data consists of estimations of alpha and beta relative band power and comparisons between novel object recognition versus familiar object exploration, between three experimental stages. In this manuscript, we have discussed electrodes manufacturing process, epidural electrodes implantation surgery, environmental enrichment protocol, NORT protocol, BTS setup, EEG &#8211; BTS coupling for simultaneous monitoring in real-time, and EEG data analysis based on automatic events detection.

The protocol presented here provides information on the simultaneous electroencephalography (EEG) and behavioral assessment in real-time. We have discussed all steps involved in this protocol as an attractive solution for researchers in many fields of neuroscience, particularly in learning and memory areas.

Surveillance simultanée de l’électrophysiologie sans fil et du test comportemental de la mémoire comme outil pour étudier la neurogenèse de l’hippocampe

Brainwaves amplitude obtained from electroencephalography (EEG) has been well-recognized as a basis for cognitive capacity, memory, and learning on ...