Fig. 2.

Examples of accumbens neurons showing correlations with reward and place during RRPST and PLT in WT mice. (A and C) Performance of mice and neural responses in RRPST. (a) Trail of mouse (Left) and firing rate map (Right). Yellow dots in trail map indicate locations of reward delivery. (b) Single sweep of responses to BSR (Left) and its expanded display (Right). The bars above the sweeps indicate BSR period. (c) Rastergrams (Left), histograms of firing (Right Upper), and curve of averaged locomotion speed (Right Lower). (B and D) Performance of mice and neural responses in PLT. (a) Trail of mouse (Left) and firing rate map (Right). (b) Rastergram (Left Upper), histogram of firing (Left Middle), and curve of averaged locomotion speed (Left Bottom) corresponding to data recorded at upper red circled place. (Right) Rastergram, histogram, and curve of averaged speed corresponding to data recorded at lower red circled place. Note that the activity of this I-type neuron was not correlated with movement speed. Horizontal bars below rastergrams, histograms, and speed curves indicate BSR period. Color scale tables to the right of the firing maps indicate calibration for firing rate. The white open rectangles in the firing rate maps delineate place fields.