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A high-density EEG study of differences between three high speeds of simulated forward motion from optic flow in adult participants

A high-density EEG study was conducted to investigate evoked and oscillatory brain activity in response to high speeds of simulated forward motion. Participants were shown an optic flow pattern consisting of a virtual road with moving poles at either side of it, simulating structured forward motion...

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Autores principales: Vilhelmsen, Kenneth, van der Weel, F. R. (Ruud), van der Meer, Audrey L. H.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4620151/
https://www.ncbi.nlm.nih.gov/pubmed/26578903
http://dx.doi.org/10.3389/fnsys.2015.00146
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author Vilhelmsen, Kenneth
van der Weel, F. R. (Ruud)
van der Meer, Audrey L. H.
author_facet Vilhelmsen, Kenneth
van der Weel, F. R. (Ruud)
van der Meer, Audrey L. H.
author_sort Vilhelmsen, Kenneth
collection PubMed
description A high-density EEG study was conducted to investigate evoked and oscillatory brain activity in response to high speeds of simulated forward motion. Participants were shown an optic flow pattern consisting of a virtual road with moving poles at either side of it, simulating structured forward motion at different driving speeds (25, 50, and 75 km/h) with a static control condition between each motion condition. Significant differences in N2 latencies and peak amplitudes between the three speeds of visual motion were found in parietal channels of interest P3 and P4. As motion speed increased, peak latency increased while peak amplitude decreased which might indicate that higher driving speeds are perceived as more demanding resulting in longer latencies, and as fewer neurons in the motion sensitive areas of the adult brain appear to be attuned to such high visual speeds this could explain the observed inverse relationship between speed and amplitude. In addition, significant differences between alpha de-synchronizations for forward motion and alpha synchronizations in the static condition were found in the parietal midline (PM) source. It was suggested that the alpha de-synchronizations reflect an activated state related to the visual processing of simulated forward motion, whereas the alpha synchronizations in response to the static condition reflect a deactivated resting period.
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spelling pubmed-46201512015-11-17 A high-density EEG study of differences between three high speeds of simulated forward motion from optic flow in adult participants Vilhelmsen, Kenneth van der Weel, F. R. (Ruud) van der Meer, Audrey L. H. Front Syst Neurosci Neuroscience A high-density EEG study was conducted to investigate evoked and oscillatory brain activity in response to high speeds of simulated forward motion. Participants were shown an optic flow pattern consisting of a virtual road with moving poles at either side of it, simulating structured forward motion at different driving speeds (25, 50, and 75 km/h) with a static control condition between each motion condition. Significant differences in N2 latencies and peak amplitudes between the three speeds of visual motion were found in parietal channels of interest P3 and P4. As motion speed increased, peak latency increased while peak amplitude decreased which might indicate that higher driving speeds are perceived as more demanding resulting in longer latencies, and as fewer neurons in the motion sensitive areas of the adult brain appear to be attuned to such high visual speeds this could explain the observed inverse relationship between speed and amplitude. In addition, significant differences between alpha de-synchronizations for forward motion and alpha synchronizations in the static condition were found in the parietal midline (PM) source. It was suggested that the alpha de-synchronizations reflect an activated state related to the visual processing of simulated forward motion, whereas the alpha synchronizations in response to the static condition reflect a deactivated resting period. Frontiers Media S.A. 2015-10-26 /pmc/articles/PMC4620151/ /pubmed/26578903 http://dx.doi.org/10.3389/fnsys.2015.00146 Text en Copyright © 2015 Vilhelmsen, van der Weel and van der Meer. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Neuroscience
Vilhelmsen, Kenneth
van der Weel, F. R. (Ruud)
van der Meer, Audrey L. H.
A high-density EEG study of differences between three high speeds of simulated forward motion from optic flow in adult participants
title A high-density EEG study of differences between three high speeds of simulated forward motion from optic flow in adult participants
title_full A high-density EEG study of differences between three high speeds of simulated forward motion from optic flow in adult participants
title_fullStr A high-density EEG study of differences between three high speeds of simulated forward motion from optic flow in adult participants
title_full_unstemmed A high-density EEG study of differences between three high speeds of simulated forward motion from optic flow in adult participants
title_short A high-density EEG study of differences between three high speeds of simulated forward motion from optic flow in adult participants
title_sort high-density eeg study of differences between three high speeds of simulated forward motion from optic flow in adult participants
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4620151/
https://www.ncbi.nlm.nih.gov/pubmed/26578903
http://dx.doi.org/10.3389/fnsys.2015.00146
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