Eviatar Z, Zaidel E
Institute of Information Processing and Decision Making, University of Haifa, Israel.
Brain Cogn. 1994 May;25(1):128-37. doi: 10.1006/brcg.1994.1027.
Three patients with complete cerebral commissurotomy from the California series were given two letter-matching tasks, one requiring physical identity and the other requiring nominal identity. The pairs of letters were presented unilaterally to each disconnected hemisphere or bilaterally, with each hemisphere receiving one of the letters to be compared. The disconnected hemispheres of all three patients showed good performance in the unilateral conditions, even when visual field and response hand were crossed. The crossed visual field-hand conditions resulted in both slower and less accurate responses. Only N.G. was able to cross-compare letters in the bilateral condition and only for physical identity. The results qualify previous reports that higher-level information can transfer subcallosally while visual information cannot.
来自加利福尼亚系列的三名接受了完全大脑连合切开术的患者接受了两项字母匹配任务，一项要求物理同一性，另一项要求名义同一性。字母对单侧呈现给每个分离的半球或双侧呈现，每个半球接收要比较的字母之一。所有三名患者分离的半球在单侧条件下都表现良好，即使视野和反应手交叉时也是如此。视野-手交叉条件导致反应更慢且准确性更低。只有N.G.能够在双侧条件下进行字母交叉比较，并且仅针对物理同一性。这些结果使先前关于高级信息可以在胼胝体下传递而视觉信息不能传递的报告具有了限定条件。
