Function of the dorsal and medial cortex of turtles in learning.

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Abstract
The effects of damage to the dorsal and medial cortex of turtles were investigated in two experiments. In the first, damage to the dorsal cortex disrupted acquistition and reversal of a go-no-go discrimination but had no effect on retention of the discrimination if it had been learned preoperatively. Medial cortex damage had no effect. In the second experiment, dorsal cortex damage impaired acquisition, but not extinction or reacquistion, of a discrete-trial key-press. Again, medial cortex damage had no effect. The results suggest that the dorsal cortex is involved in learning in turtles.