Table II.

Performance Index Data for Rats with Lateral Entorhinal Cortex Lesions

Percent damage to lateral entorirhinal cortex	Percent damage to anterior perirhinal cortex	Percent damage to postrhinal cortex	Performance index*
74.2	0	67.8	.466
82.2	0	58.7	.383
53.3	0	57.0	.295
66.4	0	32.5	.109

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

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