DIPOLE MODELING OF MEDIAN NERVE SEPS IN NORMAL SUBJECTS AND PATIENTS WITH SMALL SUBCORTICAL INFARCTS

被引：31

作者：

FRANSSEN, H ^{[1
]}

STEGEMAN, DF ^{[1
]}

MOLEMAN, J ^{[1
]}

SCHOOBAAR, RP ^{[1
]}

机构：

[1] ACAD HOSP NIJMEGEN, INST NEUROL, DEPT CLIN NEUROPHYSIOL, NIJMEGEN, NETHERLANDS

来源：

ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY | 1992年 / 84卷 / 05期

关键词：

MEDIAN NERVE SEP; SEP; LACUNAR INFARCT; DIPOLES;

D O I：

10.1016/0168-5597(92)90027-9

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Somatosensory evoked potentials (SEPs) to median nerve stimulation were analyzed by means of spatio-temporal dipole modelling in 6 normal subjects and 8 patients with small infarcts in the thalamo-cortical radiation or thalamus. The SEPs could be modelled by a tangentially and a radially oriented equivalent dipole in the region of the contralateral cortical hand area and an equivalent dipole located in the region of the brain-stem. In 3 patients with absence or reduction of amplitudes of cortically generated SEP components, the activity of both cortical dipoles was lost or reduced. In 2 patients the frontally recorded SEP component P20 was lost; in one of them the activity of mainly the tangential dipole was reduced.

引用

页码：401 / 417

页数：17

共 57 条

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