Figure 3.

Cortical deactivation fails to affect unisensory integration in a unisensory visual SC neuron. The within-modal visual responses of a unisensory neuron were similar to those of the multisensory neuron in Figure 2. A, In the control condition, the within-modal response was similar to that of the individual component stimuli and was characterized by subadditivity at all levels of stimulus effectiveness. B, C, Cortical deactivation (B) or reactivation (C) had little effect on the modality-specific component responses or the combined within-modal response, and did not alter the underlying subadditive computation. Conventions are the same as in previous figures.