Universidad de Valparaíso

2 ARTICLES PUBLISHED IN JoVE

JoVE Core

A Method for Tracking the Time Evolution of Steady-State Evoked Potentials

Pavel Prado-Gutiérrez¹, Mónica Otero^1,2, Eduardo Martínez-Montes³, Alejandro Weinstein^1,4, María-José Escobar^1,2, Wael El-Deredy^1,4, Matías Zañartu^1,2

¹Advanced Center for Electrical and Electronic Engineering (AC3E), Universidad Técnica Federico Santa María, ²Department of Electronic Engineering, Universidad Técnica Federico Santa María, ³Neuroinformatics Department, Cuban Neuroscience Center, ⁴Centro de Investigación y Desarrollo en IngenierÍa, Universidad de Valparaíso

A protocol to assess the time evolution of the neural entrainment to external repetitive stimuli is presented. Steady-state recordings of the same experimental condition are acquired and averaged in the time-domain. The steady-state dynamics are analyzed by plotting the response amplitude as a function of time.

Bioengineering

Cortical Bone Assessment Using Ultrasonic Guided Waves: A Reproducibility Study in a Healthy Population

Baptiste Dubot¹, Maxime Deniau¹, Donatien Ramiandrisoa², Jean-Gabriel Minonzio³

¹Ecole Centrale, ²Myriade, ³Escuela de Ingeniería en Informática, Center of Interdisciplinary Biomedical and Engineering Research for Health - MEDING, Universidad de Valparaíso

Here, we present the measurement protocol of the bi-directional axial transmission (BDAT) ultrasonic device in detail and test it in a reproducibility study, considering 14 healthy participants and 3 operators. Reliability, measured with the intraclass correlation coefficients (ICC), was good to excellent for four parameters of interest.