Figure 8.

Spread of [³H]muscimol in the hippocampus (experiment 3). A, Extent of rostrocaudal spread of [³H]muscimol through the hippocampus. Mean ± SEM distance from the first to the last of the tissue sections taken in which radioactive signal was apparent. B, Mean ± SEM two-dimensional area of [³H]muscimol spread in the tissue section having the maximum apparent radioactive density. This section was assumed to be at or near the center of the infusion. Rats were killed at one of four time intervals after [³H]muscimol infusion: immediately (0 min; white bars), 20 min (light gray bars), 60 min (dark gray bars), or 360 min (black bars).