Figure 5.

Average delay for trials with and without noise distracter. Average peak time delay (±SEM) in trials with distracters (PI + N) relative to trials without distracters (PI). Should the distracter have no effect, the clock would continue to time (run, delay = 0 s). Should the clock stop timing during the distracter, the delay would be equal to the duration of the noise (stop, delay = 5 s). Should the clock restart timing after the distracter, the delay would be equal to the duration of the noise, 5 s, plus the duration of the pre-distracter interval, 5 s (reset, delay = 10 s). Rats ignored a neutral distracter (CTRL). In contrast, rats over-reset when the distracter is emotionally charged (FEAR). Nomifensine reliably reduces the time delay. ^*p < 0.05; ^**p < 0.01; ns, p > 0.05.