Walking enhances peripheral visual processing in humans

Cognitive processes are almost exclusively investigated under highly controlled settings during which voluntary body movements are suppressed. However, recent animal work suggests differences in sensory processing between movement states by showing drastically changed neural responses in early visua...

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Vydáno v:	PLoS biology Ročník 17; číslo 10; s. e3000511
Hlavní autoři:	Cao, Liyu, Händel, Barbara
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	United States Public Library of Science 11.10.2019 Public Library of Science (PLoS)
Témata:	Adult Alpha Rhythm - physiology Animal behavior Biology and Life Sciences Brain research Cognitive ability Computer and Information Sciences Cortex EEG Electroencephalography Evoked Potentials, Visual - physiology Eye movements Female Fitness equipment Humans Influence Information processing Inhibition, Psychological Locomotion Locomotion - physiology Male Medicine and Health Sciences Neuromodulation Neurophysiology Oscillations Pattern Recognition, Visual - physiology Perceptions Photic Stimulation Psychomotor Performance - physiology Research and Analysis Methods Sensory evaluation Sensory integration Social Sciences Studies Vision, Ocular - physiology Visual Cortex - physiology Visual evoked potentials Visual perception Visual stimuli Walking Walking - physiology Germany
ISSN:	1545-7885, 1544-9173, 1545-7885
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Popis
Shrnutí:	Cognitive processes are almost exclusively investigated under highly controlled settings during which voluntary body movements are suppressed. However, recent animal work suggests differences in sensory processing between movement states by showing drastically changed neural responses in early visual areas between locomotion and stillness. Does locomotion also modulate visual cortical activity in humans, and what are the perceptual consequences? Our study shows that walking increased the contrast-dependent influence of peripheral visual input on central visual input. This increase is prevalent in stimulus-locked electroencephalogram (EEG) responses (steady-state visual evoked potential [SSVEP]) alongside perceptual performance. Ongoing alpha oscillations (approximately 10 Hz) further positively correlated with the walking-induced changes of SSVEP amplitude, indicating the involvement of an altered inhibitory process during walking. The results predicted that walking leads to an increased processing of peripheral visual input. A second study indeed showed an increased contrast sensitivity for peripheral compared to central stimuli when subjects were walking. Our work shows complementary neurophysiological and behavioural evidence corroborating animal findings that walking leads to a change in early visual neuronal activity in humans. That neuronal modulation due to walking is indeed linked to specific perceptual changes extends the existing animal work.
Bibliografie:	new_version ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23 The authors have declared that no competing interests exist.
ISSN:	1545-7885 1544-9173 1545-7885
DOI:	10.1371/journal.pbio.3000511