Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6203861 | Vision Research | 2009 | 10 Pages |
Abstract
Human psychophysics and monkey physiology studies have shown that attention modulates early vision - contrast sensitivity and processing. But how can we bridge the effects of attention on perceptual performance to their neural underpinnings? Here we implement a population-coding model that estimates attentional effects on population contrast response given psychophysical data. Model results show that whereas endogenous (sustained, voluntary) attention changes population contrast-response via contrast gain, exogenous (transient, involuntary) attention changes population contrast-response via response gain.
Related Topics
Life Sciences
Neuroscience
Sensory Systems
Authors
Franco Pestilli, Sam Ling, Marisa Carrasco,