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Abstract

Neuroscience

Analyzing Neural Activity and Connectivity Using Intracranial EEG Data with SPM Software

Published: October 30th, 2018

DOI:

10.3791/58187

1Kokoro Research Center, Kyoto University, 2Brain Activity Imaging Center, Advanced Telecommunications Research Institute International, 3Department of Neurodevelopmental Psychiatry, Habilitation and Rehabilitation, Graduate School of Medicine, Kyoto University, 4National Epilepsy Center, 5Shizuoka Institute of Epilepsy and Neurological Disorders, 6Department of System Neuroscience, Sapporo Medical University, 7Faculty of Human Health Science, Graduate School of Medicine, Kyoto University

* These authors contributed equally

Abstract

Measuring neural activity and connectivity associated with cognitive functions at high spatial and temporal resolutions is an important goal in cognitive neuroscience. Intracranial electroencephalography (EEG) can directly record electrical neural activity and has the unique potential to accomplish this goal. Traditionally, averaging analysis has been applied to analyze intracranial EEG data; however, several new techniques are available for depicting neural activity and intra- and inter-regional connectivity. Here, we introduce two analytical protocols we recently applied to analyze intracranial EEG data using the Statistical Parametric Mapping (SPM) software: time-frequency SPM analysis for neural activity and dynamic causal modeling of induced responses for intra- and inter-regional connectivity. We report our analysis of intracranial EEG data during the observation of faces as representative results. The results revealed that the inferior occipital gyrus (IOG) showed gamma-band activity at very early stages (110 ms) in response to faces, and both the IOG and amygdala showed rapid intra- and inter-regional connectivity using various types of oscillations. These analytical protocols have the potential to identify the neural mechanisms underlying cognitive functions with high spatial and temporal profiles.

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Keywords Intracranial EEG

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