Fig 5.

Intact contextual and spatial memory after lesions of the ventral hippocampus. (A) Percentage of freezing (means ± SEM) during the first 5 min of confinement to a test chamber before and 24 h after the rats received electric foot shock in this chamber. (B) Retention on a probe trial at the beginning of day 3 in the water maze. The diagram shows the time that rats spent in a circular zone around the platform position (black) and in corresponding zones of the three other quadrants (means ± SEM). Each zone covered 4.1% of the pool surface (radius, 20 cm; expected time, 2.5 s; Inset).