Figure 4.

Pause responses of TANs in the VRT condition. (A) Effects of a variable stimulus-reward interval on the duration and the magnitude of TAN responses to the stimulus (top) and reward (bottom) in relation to striatal region. Results are pooled for the two monkeys. Values are means ± SEM. *P < 0.05. Same conventions as in Figure 3A. Numbers of neurons responsive to the stimulus and/or reward in the motor, associative and ventral striatum, are as follows: FRT, n = 5–7, 7–8 and 4–6, respectively; VRT, n = 4–6, 8–9, 5–6, respectively. (B) Population average activity across the 27 TANs recorded in the VRT condition. Same conventions as in Figure 3B.