Fine temporal properties of center-surround interactions in motion revealed by reverse correlation

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
Duje TadinRandolph Blake

Abstract

Center-surround interactions are a key property of visual motion mechanisms. Using a temporal reverse correlation method with human observers, we investigated perceptual interactions between a brief center motion (approximately 20 ms) and a surround that moved up-down with a new direction chosen randomly every 5 ms. The aim was to reveal interactions between center and surround motions and their dependency on relative direction, contrast, and timing. Hypothesizing that surround computation involves different neural circuitry than the center response, we manipulated surround contrast to affect the relative timing of center and surround signals. The reverse correlation analysis yielded temporal profiles of surround influence indicating, in 5 ms steps, the time course of the effect of the surround on the discriminability of center motion. The resulting temporal profiles varied systematically with contrast: as surround contrast decreased, both the latency and duration of its influence increased. This finding, consistent with longer and variable neural response latencies at low contrast, psychophysically reveals fine-scale temporal interactions between center and surround signals. Additionally, the strength of surround influence was...Continue Reading

Citations

Jan 16, 2014·Cognitive Neurodynamics·Steven Ravett Brown
Dec 8, 2007·Nature Reviews. Drug Discovery·Daniel C JavittMihály Hajós
Sep 4, 2009·Journal of Neurophysiology·Peter Neri, Dennis Levi
Oct 3, 2008·Journal of Neurophysiology·Peter Neri, Dennis M Levi
May 10, 2013·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Jennifer H Foss-FeigCarissa J Cascio
Nov 21, 2009·Vision Research·Daniel H Baker, Erich W Graf
Sep 29, 2006·Journal of Neurophysiology·Peter Neri, Dennis M Levi
Jan 25, 2008·Journal of Neurophysiology·Ben SchollMichael Wehr
Jul 4, 2019·Nature Communications·Duje TadinRandolph Blake
Feb 6, 2015·Journal of Neurophysiology·Henry J Alitto, W Martin Usrey
Nov 19, 2019·Vision·Bart G BorghuisWim A van de Grind
Mar 10, 2017·Physiological Reports·Partow YazdaniAndrew J Trevelyan
Dec 12, 2018·Journal of Vision·Akshatha BhatDavid C Burr

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