Figure 10.
NAc O2 signals for subtypes of behavioral response during extinction. O2 signal changes recorded during extinction (Days 1–4), with stable pre-extinction baseline presented as Day 0. A, B, O2 signal graphs have been presented as session averages according to the subtype of behavioral response exhibited for each cue: correct lever press following the S1+ cue (A, S1+/L+, black circles), omission following the S2− cue (A, S2−/OM, white circles), incorrect lever press following the S1+ cue (B, S1+/L−, black circles), or lever press (LP) following the S2− cue (B, S2−/LP, white circles). Each trial was analyzed for a 30 s period including a 5 s baseline before cue onset (vertical line at 0 on the x-axis) and 25 s after. The second vertical line at 10 s corresponds to cue offset. NAc O2 signals decrease for correct lever presses to the S1+ cue on Day 1 of extinction and persist in this manner until Day 3. No changes in the O2 signal could be observed for both the incorrect responses and the omissions (OMs) to the S2− cue. Black bars: p < 0.05, compared with the S2−/OM response.