Rapid motion adaptation reveals the temporal dynamics of spatiotemporal correlation between ON and OFF pathways

Oluk, Can and Pavan, Andrea and Kafaligonul, Hulusi (2016) Rapid motion adaptation reveals the temporal dynamics of spatiotemporal correlation between ON and OFF pathways. Scientific Reports, 6 . p. 34073. ISSN 2045-2322

Full content URL: http://dx.doi.org/10.1038/srep34073

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Abstract

At the early stages of visual processing, information is processed by two major thalamic pathways encoding brightness increments (ON) and decrements (OFF). Accumulating evidence suggests that these pathways interact and merge as early as in primary visual cortex. Using regular and reverse-phi motion in a rapid adaptation paradigm, we investigated the temporal dynamics of within and across pathway mechanisms for motion processing. When the adaptation duration was short (188 ms), reverse-phi and regular motion led to similar adaptation effects, suggesting that the information from the two pathways are combined efficiently at early-stages of motion processing. However, as the adaption duration was increased to 752 ms, reverse-phi and regular motion showed distinct adaptation effects depending on the test pattern used, either engaging spatiotemporal correlation between the same or opposite contrast polarities. Overall, these findings indicate that spatiotemporal correlation within and across ON-OFF pathways for motion processing can be selectively adapted, and support those models that integrate within and across pathway mechanisms for motion processing.

Keywords:Rapid Motion Adaptation, ON-OFF Pathways, Spatiotemporal Correlation, JCOpen
Subjects:C Biological Sciences > C800 Psychology
C Biological Sciences > C850 Cognitive Psychology
C Biological Sciences > C830 Experimental Psychology
Divisions:College of Social Science > School of Psychology
ID Code:24338
Deposited On:04 Oct 2016 10:18

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