Focal stimulation of the thalamic reticular nucleus induces focal gamma waves in cortex

被引：50

作者：

MacDonald, KD ^{[1
]}

Fifkova, E ^{[1
]}

Jones, MS ^{[1
]}

Barth, DS ^{[1
]}

机构：

[1] Univ Colorado, Dept Psychol, Boulder, CO 80309 USA

来源：

JOURNAL OF NEUROPHYSIOLOGY | 1998年 / 79卷 / 01期

关键词：

D O I：

10.1152/jn.1998.79.1.474

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Focal stimulation of the thalamic reticular nucleus induces focal gamma waves in cortex. J. Neurophysiol, 79: 474-477, 1998. Electrical stimulation of the thalamic reticular nucleus (TRN; 0.5-s trains of 500-Hz 0.5-ms pulses at 5-10 mu A) evokes focal oscillations of cortical electrical potentials in the gamma frequency band (similar to 35-55 Hz). These evoked oscillations are specific to either the somatosensory or auditory cortex and to subregions of the cortical receptotopic map, depending an what part of the TRN is stimulated. Focal stimulation of the internal capsule, however, evokes focal slow potentials, without gamma activity. Our results suggest that the TRN's role extends beyond that of general cortical arousal to include specific modality and submodality activation of the forebrain.

引用

页码：474 / 477

页数：4

共 34 条

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