Figure 3. Influence of reward on inferior colliculus neurons.
(A) Schematic representation of the reward protocol. The protocol involves the presentation of a 1000 ms white noise stimulus at 60 dB SPL, repeated 150 times with a 4 s interstimulus interval. The experimental design comprises three blocks: an initial 'early no-reward' block consisting of 50 trials without reward, a 'reward' block of 50 trials with water reward administered 500 ms after sound offset, and a final 'late no-reward' block of 50 trials without reward. (B) Raster plots of a representative neuron depicting the response patterns during the reward protocol. (C) PSTHs of the neuron in (B) representing the neuronal responses during the reward block, early no-reward block, and late no-reward block (red, reward block; black, early no-reward block; blue, late no-reward block). (D) PSTHs of the neuronal population exhibiting significant reward responses (n=24) representing the neuronal responses during the reward block, early no-reward block, and late no-reward block (red, reward block; black, early no-reward block; blue, late no-reward block). (E) Equivalent responses as in (D) but from neurons with nonsignificant reward responses (n=35). (F) Scatterplots of RDI in reward block versus RDI in behavior protocol (square, monkey B; circle, monkey J; n=63).
Figure 3—figure supplement 1. Influence of reward on neuronal responses.
