Primary Visual Cortex as a Saliency Map: A Parameter-Free Prediction and Its Test by Behavioral Data
Fig 2
Schematics of visual stimuli for singleton searches.
Due to iso-feature suppression, the highest response to each image is from a neuron responding to the singleton bar. This most activated neuron is tuned to orientation for image A, tuned to color for image B, and to color, orientation, or both features of the singleton for image C. The maximum V1 response to the singleton signals the saliency of its location.