Interhemispheric synthesis of goal alternation and jumping escape reactions.

Abstract
Rats learned a left-right T-maze alternation and a platform jumping escape reaction, and then were tested on left-right alternation of platform jumping. Ss [subjects] learning Tasks 1 and 2 with the whole brain (A) or with the left hemisphere only (B) made substantially fewer alternations during synthesis trials with intact brain than Ss which learned these tasks with the left and right hemispheres only. Untrained controls performed similarly to Groups A and B in Phase 3. The absence of positive transfer from Task 1 to 3 in Groups A and B is attributable to interference of tasks acquired in the same hemisphere.

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