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ThinkMind // HEALTHINFO 2022, The Seventh International Conference on Informatics and Assistive Technologies for Health-Care, Medical Support and Wellbeing // View article healthinfo_2022_1_80_80047


Electrophysiological Answer to a Checkerboard Stimulus: A Pilot Study

Authors:
Ana Ferreira
Ana Ferrão
Catarina Andrade
Mónica Baptista
Cláudia Quaresma
Carla Quintão

Keywords: Electrophysiology; visual evoked potentials; electrodermal activity; preterm born

Abstract:
Electroencephalography is a clinical signal that reveals the brain's electrical activity. In this category, the Visual Evoked Potentials (VEP) is one of the most frequent measures, especially when it is necessary to assess the maturity and function of the central visual system. The Electrodermal Activity (EDA) data gives information about skin conductance, and it is used to evaluate autonomic sympathetic reactions, often related to neuropsychological states. It could be used with all ages and in young subjects with healthy development or clinical practice with children with atypical development. In this paper, we propose an experimental setup based on checkerboard stimuli to assess the evolution of visual system development of preterm infants. This experimental protocol was applied to two female preterm born infants of 4 and 6 months of corrected age. The preliminary findings show that, as expected, the P100 latencies and amplitude are still different from those expected for adults and older children. However, the older infant presents results more similar to adults, corresponding to having a more mature visual system. Concerning EDA, it was observed that the older infant presents more responses to the stimulus, a higher level of skin conductance, and a shorter latency time than the younger infant, which is congruent with what is expected, given the maturation of the nervous system. The methodology used in this pilot application and the algorithm defined seem adequate to use in a longitudinal study to follow the evolution of preterm and term infants.

Pages: 32 to 38

Copyright: Copyright (c) IARIA, 2022

Publication date: October 16, 2022

Published in: conference

ISSN: 2519-8491

ISBN: 978-1-68558-004-9

Location: Lisbon, Portugal

Dates: from October 16, 2022 to October 20, 2022

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