Figure 1: Experimental design and recordings from bilateral hippocampi.
From: Experience enhances gamma oscillations and interhemispheric asymmetry in the hippocampus
(a) Experimental design. After weaning at 21 days, rats were reared either individually isolated in standard cages (ISO) or housed together in large enriched cages with wheels and toys (ENR). (b) Recording configuration. Simultaneous left and right CA1 in vivo recordings were performed using 16-channel linear silicon probes. (c) Typical recordings of theta-associated gamma oscillations from the entire CA1 area of ISO (upper panel) and ENR (lower panel) rats. Among 16 channels, recordings of 14 channels covering the entire CA1 area (from 200 μm above to 500 μm below pyramidal cell layer; from top traces to the bottom) are shown. Recordings from the pyramidal cell layer are indicated in black triangles. The spacing between channels is 50 μm.
