Current orientation induced by magnetic stimulation influences a cognitive task

被引：31

作者：

Hill, AC ^{[1
]}

Davey, NJ ^{[1
]}

Kennard, C ^{[1
]}

机构：

[1] Imperial Coll Sch Med, Dept Sensorimotor Syst, Div Neurosci & Psychol Med, London W6 8RP, England

来源：

NEUROREPORT | 2000年 / 11卷 / 14期

关键词：

memory; saccade; transcranial magnetic stimulation;

D O I：

10.1097/00001756-200009280-00041

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

The direction of the current induced by transcranial magnetic stimulation (TMS) over the motor cortex has been observed to influence the threshold and latency of evoked muscle responses. This study investigates the effect of TMS-induced current orientation (ICO) over the prefrontal cortex, on a specific cognitive task (memory-guided saccade). TMS was applied with a figure-of-eight coil, placed at one of eight different orientations over the prefrontal cortex. The most effective ICO was antero-lateral, which is a different optimal ICO from that seen over the hand area of the motor cortex. This demonstrates that ICO can alter the effect of TMS on cognitive functions and that ICO is an independent variable that should not be ignored when designing TMS studies. NeuroReport 11:3257-3259 (C) 2000 Lippincott Williams & Wilkins.

引用

页码：3257 / 3259

页数：3

共 25 条

[1] MODELING MAGNETIC COIL EXCITATION OF HUMAN CEREBRAL-CORTEX WITH A PERIPHERAL-NERVE IMMERSED IN A BRAIN-SHAPED VOLUME CONDUCTOR - THE SIGNIFICANCE OF FIBER BENDING IN EXCITATION [J].