Patches in primary visual cortex (V1) rich in cytochrome oxidase were thought to contain unoriented, color-opponent neurons. Here the authors measure orientation tuning in V1 neurons using acutely implanted 100-electrode arrays. Patch cells were nearly as well tuned as those in interpatches, suggesting that processing of form and color is not strictly segregated in primate V1. Patch cells had higher mean discharge rates, consistent with their enhanced metabolism.
- John R Economides
- Lawrence C Sincich
- Jonathan C Horton