Funnell Margaret G, Corballis Paul M, Gazzaniga Michael S
Center for Cognitive Neuroscience, Dartmouth College, Hanover, USA.
Brain Cogn. 2003 Nov;53(2):218-22. doi: 10.1016/s0278-2626(03)00113-1.
Divided visual field studies of neurologically normal adults indicate that the left hemisphere is superior to the right in making temporal judgments. Some neuroimaging and neuropsychological studies, however, have suggested a role for the right hemisphere in temporal processing. We tested the divided hemispheres of a split-brain patient in two tasks requiring temporal judgments about visually presented stimuli. In one task, the patient judged whether two circles presented to one visual field appeared for the same or different durations. In the second task, the patient judged whether the temporal gaps in two circles occurred simultaneously or sequentially. In both tasks, the performance of the right hemisphere was superior to that of the left. This suggests that the right hemisphere plays an important role in making temporal judgments about visually presented stimuli.
对神经功能正常的成年人进行的视野分割研究表明，在进行时间判断方面，左半球优于右半球。然而，一些神经影像学和神经心理学研究表明，右半球在时间处理中也发挥着作用。我们对一名裂脑患者的两个半球进行了测试，这两个任务都需要对视觉呈现的刺激进行时间判断。在一项任务中，患者判断呈现给一个视野的两个圆圈出现的持续时间是相同还是不同。在第二项任务中，患者判断两个圆圈中的时间间隔是同时出现还是相继出现。在这两项任务中，右半球的表现均优于左半球。这表明右半球在对视觉呈现的刺激进行时间判断方面发挥着重要作用。
