Fig. 2.

The development of context-specific neuronal firing is shown in an individual hippocampal neuron which was recorded for 5 consecutive days (labels as in Fig. 1). Plots are shown for the first and second halves (Block 1 and Block 2) of the random foraging session (RF) and for the first, second and fourth regular acquisition sessions (ACQ1, ACQ2 and ACQ4). Spatial correlation coefficients (r) of the firing rate maps are given for each pair of plots. Behavioral performance during each half session is indicated by the percentage of trials with correct responses. The firing patterns were similar during the random foraging session and the first acquisition session. However, they became more distinct as the rat learned the context appropriate responses.