Information about various visual attributes orientation and color is represented in the primate striate cortex (V1) before reaching extrastriate cortices. An important question regarding the functional architecture of V1 is whether these dierent attributes are represented by separate populations of neurons. However, previous studies using single- or multi-unit recording have reached conicting conclusions regarding this issue.
Youping Xiao, Ravi Rao, Guillermo A. Cecchi, Ehud