Figure 3.

Amygdala neurons track state value during the fixation interval. (a,b) PSTHs aligned on fixation point onset from two example amygdala neurons (a, positive encoding; b, negative encoding) revealing responses to the fixation point consistent with their encoding state value. (c) Averaged and normalized responses to the fixation point for positive, negative, and nonvalue-coding amygdala neurons. (d) Histograms showing the number of cells that increased, decreased, or did not change their firing rates as a function of which valence the neuron encoded. Note that the fixation point may be understood as a mildly positive stimulus, so positive neurons tend to increase their response to it and negative neurons decrease their response. Adapted with permission from Belova et al. (2008, figure 2).