Purchase this article with an account.
Hans Supèr, Victor A. F. Lamme; Neural signals in monkey primary visual cortex that predict direction and latency of saccades. Journal of Vision 2005;5(8):976. doi: 10.1167/5.8.976.
Download citation file:
© ARVO (1962-2015); The Authors (2016-present)
When in the brain is a decision made? In the visual domain, a behavioral outcome of a decision is a saccade, which is a fast shift of gaze towards a target in the visual scene. Making a saccade includes a sensory phase where a target is located and identified and a motor phase where an eye movement is prepared and executed. Current neurophysiological data and reaction time models show that saccadic reaction times are determined by the build-up of activity in motor-related structures. Here we show, using a delayed figure-ground detection task that sustained activity in the sensory visual cortex (V1) predicts saccadic reaction time. This predictive activity is part of the process of figure-ground segregation and is specific for the saccade target location. These observations show how sensory signals can provide information for the decision when and where to look.
This PDF is available to Subscribers Only