Table III.

Performance Index Data for Rats with Medial Entorhinal Cortex Lesions

Percent damage to medial entorhinal cortex	Percent damage to anterior perirhinal cortex	Percent damage to postrhinal cortex	Performance index*
75	0	0	.130
100	0	0	.166
100	0	0	.385
100	0	0	−.078

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 medial entorhinal cortex lesions. 

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