The Effect of Locomotion on Early Visual Contrast Processing in Humans

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
Alex V BenjaminAlex R Wade

Abstract

Most of our knowledge about vision comes from experiments in which stimuli are presented to immobile human subjects or animals. In the case of human subjects, movement during psychophysical, electrophysiological, or neuroimaging experiments is considered to be a source of noise to be eliminated. Animals used in visual neuroscience experiments are typically restrained and, in many cases, anesthetized. In reality, however, vision is often used to guide the motion of awake, ambulating organisms. Recent work in mice has shown that locomotion elevates visual neuronal response amplitudes (Niell and Stryker, 2010; Erisken et al., 2014; Fu et al., 2014; Lee et al., 2014; Mineault et al., 2016) and reduces long-range gain control (Ayaz et al., 2013). Here, we used both psychophysics and steady-state electrophysiology to investigate whether similar effects of locomotion on early visual processing can be measured in humans. Our psychophysical results show that brisk walking has little effect on subjects' ability to detect briefly presented contrast changes and that co-oriented flankers are, if anything, more effective masks when subjects are walking. Our electrophysiological data were consistent with the psychophysics indicating no increa...Continue Reading

Citations

Oct 12, 2019·PLoS Biology·Liyu Cao, Barbara Händel
Jun 12, 2020·The European Journal of Neuroscience·Niall W DuncanTimothy J Lane
Jul 13, 2020·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Gianluca CampanaPaul V McGraw
Jan 9, 2020·Nature Reviews. Neuroscience·Katie A Ferguson, Jessica A Cardin
Jan 9, 2021·Frontiers in Human Neuroscience·Liyu CaoBarbara F Haendel
Nov 2, 2019·Current Opinion in Neurobiology·Simon MusallAnne K Churchland
Oct 14, 2021·PLoS Computational Biology·Daniel H BakerAlex R Wade

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Psykinematix
OSX
ViewPixx
Psychophysics toolbox
R R Development Core Team
Logitech
Pupil Capture
MATLAB

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