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저빈도 반복성 경두개 자기자극이 정산인의 시각적 단기 기억에 미치는 영향

Effects of Low Frequency Repetitive Transcranial Magnetic Stimulation on Visual Short Term Memory in Healthy Individuals

채정호|전태연|김원|이경욱|한진희|박원명|오해정
대한신경정신의학회 (Korean Neuropsychiatric Association)|2004.09|신경정신의학 (JOURNAL OF THE KOREAN NEUROPSYCHIATRIC ASSOCIATION)|제43권 제5호|pp. 590-595

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참고문헌

키워드

경두개 자기 자극술(TMS) · 인지 · 시각적 단기 기억.Transcranial magnetic stimulation (TMS) · Cognition · Visual short-term memory.
주제분류정신과학

초록

Abstract

Objectives：Repetitive transcranial magnetic stimulation (rTMS) is a novel, noninvasive method of brain stimulation. Since conventional rTMS does not cause seizure, marked advantage over electroconvulsive therapy (ECT), rTMS can be used easily and widely. Once the effects of rTMS on cognitive function are elucidated, its application will be further extended. However, the effects of rTMS on cognitive function have not been well examined. This study aimed to evaluate the effect of low frequency rTMS on visual short term memory. Methods：Forty normal healthy volunteers were randomly assigned to rTMS (n=20) or sham (n=20) groups. The rTMS group were again randomly divided into left prefrontal (n=10) and right prefrontal (n=10) groups. For each group rTMS was given at 1 Hz for 20 minutes with 100% of motor threshold. As a cognitive task, Corsi Block Tapping Test (CORSI) in the computerized Vienna Test System, which can assess visual short term memory, was performed before, during, and after the rTMS. Results：No significant difference was found in the visual short term memories between the rTMS and the sham groups before, during, or after 1 Hz rTMS, nor between the left and right prefrontal rTMS groups. Conclusion：This study demonstrates that rTMS, contrary to ECT, has no adverse visual short term memory effect when used as the standard treatment paradigm. Therefore, rTMS could be a new and safe treatment method in various neuropsychiatric fields without any interference of cognitive function. (J Korean Neuropsychiatr Assoc 2004;43(5):590-595)

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