Noonan M, Axelrod S
Department of Psychology, Canisius College, Buffalo, New York 14208.
Behav Brain Res. 1991 Dec 20;46(2):135-42. doi: 10.1016/s0166-4328(05)80106-8.
Split-brained rats learned a left-right response differentiation in a water maze significantly faster than rats with sham surgery. It is unlikely that this superiority resulted from improvement in performance variables since callosotomized rats did not differ significantly from sham operates in speed of acquisition of a brightness discrimination in the same apparatus. Additionally, callosotomy likewise had no effect on the acquisition of a water-maze task requiring consistent unilateral responses. The superiority of the callosotomized animals in forming the left-right response differentiation supports a hypothesis implicating the forebrain commissures in left-right confusion.
大脑半球切开的大鼠在水迷宫中学习左右反应辨别比假手术大鼠显著更快。这种优势不太可能源于行为变量的改善，因为在同一装置中进行亮度辨别学习时，胼胝体切开的大鼠与假手术大鼠在习得速度上没有显著差异。此外，胼胝体切开对需要持续单侧反应的水迷宫任务的习得同样没有影响。胼胝体切开的动物在形成左右反应辨别方面的优势支持了一个涉及前脑连合参与左右混淆的假说。
