Sensory modalities are intermingled in the medial pulvinar. Topographic representation of neuronal responses to each modality. Representation of response modalities of the 213 cells with significant responses as a function of the anteroposterior (y axis, from 2 to 6 mm) and mediolateral (x axis, from 5 to 9 mm) coordinates of electrode penetration sites. Response modality is gray-scale-coded: Light gray corresponds to auditory neurons, dark gray to visual neurons and black to classic and complex audiovisual neurons pooled together. The radius of the circles is proportional to the number of neurons that responded to each modality.