SOMATOSENSORY EVOKED-POTENTIALS TO MEDIAN NERVE-STIMULATION AFTER PARTIAL SECTION OF THE CORPUS-CALLOSUM

被引:0
作者
GOTO, M
OKUDA, J
IKEJIRI, Y
NISHIKAWA, T
HIROSE, M
TANABE, H
NII, Y
NAKATANI, S
SHIRAISHI, J
机构
[1] OSAKA UNIV, DEPT NEUROSURG, OSAKA 553, JAPAN
[2] OSAKA UNIV, FAC HLTH & SPORT SCI, OSAKA 553, JAPAN
关键词
SOMATOSENSORY EVOKED POTENTIALS; CORPUS CALLOSOTOMY; CORPUS CALLOSUM; CALLOSAL DISCONNECTION;
D O I
10.1007/BF00319683
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Cortical somatosensory evoked potentials (SEPs) to electrical stimulation of the median nerve were studied in four patients with intractable epilepsy who had undergone callosotomy and in a patient with infarction in the corpus callosum in order to determine whether the corpus callosum was involved in the generation of ipsilateral frontal components. Both pre- and postoperative SEPs were recorded in three of four epileptic patients. There were no significant differences in the latencies and amplitudes of the bilateral frontal components (P20, N26) between pre- and postoperative recordings. Furthermore, irrespective of the extent of the section or lesion in the corpus callosum, the nature of the impairment and the existence of the disconnection syndrome, the SEP findings showed no significant differences compared with those of normal subjects. It thus appears unlikely that the ipsilateral SEP responses are transmitted from the contralateral hemisphere through at least the anterior portion of the corpus callosum.
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页码:161 / 167
页数:7
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