Tatyana Sharpee

Computational Neurobiology Laboratory, Salk Institute for Biological Studies
Session: Building a framework for understanding circuit function session


Cortical representation of natural stimuli

In this talk I will describe our recent findings of several organizing principles for how natural visual and auditory stimuli are presented across stages of cortical processing. For visual processing, I will describe how signals in the secondary cortical visual area build on the outputs provided by the first cortical visual area, and how they relate to representation found in subsequent visual areas, such as area V4.

I will also discuss differences in how the auditory and visual systems achieve invariance. We find that auditory neurons gain invariance primarily along suppressive dimensions, whereas visual neurons gain invariance by integrating positive responses.