Table 2.

Percent of intended damage to the hippocampal formation.^a

Subjects	CA1				CA2				CA3
	L	R	Avg	W	L	R	Avg	W	L	R	Avg	W
Cuba	80.9	100	90.5	80.9	61.7	100	80.9	61.7	58.9	97.9	78.4	57.7
Gracie	71.2	100	85.6	71.2	91.4	92.2	91.8	84.2	34.6	89.9	62.2	31.1
Slim	94.1	5.7	49.9	5.4	90.1	7.7	48.9	6.9	95.2	32.3	63.7	30.7
X	82.1	68.6	75.3	52.5	81.1	66.6	73.9	50.9	62.9	73.4	68.1	39.8
Subjects	Dentate gyrus				Subicular complex				Total
	L	R	Avg	W	L	R	Avg	W	L	R	Avg	W
Cuba	66.6	96.6	81.6	64.4	66.5	94.0	80.2	62.5	66.2	97.4	81.8	64.5
Gracie	34.0	84.3	59.2	28.7	16.9	84.4	50.6	14.2	43.3	85.7	64.5	37.1
Slim	78.6	35.7	57.1	28.0	89.8	23.5	56.7	21.1	88.2	25.9	57.1	22.9
X	59.7	72.2	65.9	40.4	57.7	67.3	62.5	32.6	65.9	69.7	67.8	41.5

^aData are estimated intended damage (in percent of normal) to the ammon fields (CA1, CA2, and CA3), the dentate gyrus and subicular complex. Total refers to average of all five hippocampal regions. Note that for Gracie, percent of damage included extent of hypersignals found after both the first and second surgical procedures. Abbreviations: L, percent damage to the left hemisphere; R, percent damage to the right hemisphere; Avg, average of L and R, W = (L× R)/100 (weighted index as defined by Hodos and Bobko, 1984).