The amygdalectomies were similar to those in our previous experients with this lesion (Gaffan and Harrison, 1987; E. A. Gaffan et al.,
1988). Damage to the hippocampus was confined to the anterior l-2
mm of the hippocampus. Damage to the uncinate fascicle made during
the course of amygdalectomy was impossible to assess in the present
animals because of the subsequent intentional section of the uncinate
fascicle. The amygdalectomies were in all cases complete except for
some sparing of the dorsal posterior amygdala; the extent of sparing
was similar to that in our previous experiments.