Table I.

Performance Index Data for Rats with Perirhinal Cortex Lesions

Percent damage to perirhinal cortex	Percent damage to anterior perirhinal cortex	Percent damage to postrhinal cortex	Performance index*
54.8	51.4	65.9	.861
55.3	54.9	56.8	.677
34.3	26.9	27.3	.561
47.5	44.3	58.0	.398
54.2	54.2	47.3	.325
18.3	19.3	15.0	.315
67.3	71.1	55.3	.281
43.3	48.6	26.0	.273

Percent damage to perirhinal cortex, anterior perirhinal cortex, and posterior perirhinal cortex (postrhinal cortex), and performance on the continuous-recognition memory task for rats with perirhinal cortex lesions. 

^*The higher the score, the worse the performance.