[功能性电刺激对皮质半球间不对称性的影响]

[The effects of functional electrical stimulation on cortical interhemispheric asymmetry].

作者信息

Ecard Letícia, Silva Andressa Pitanga S da, Peçanha Neto Marijose, Veiga Heloisa, Cagy Maurício, Piedade Roberto, Ribeiro Pedro

机构信息

Laboratório de Mapeamento Cerebral e Integração Sensório-Motora, Instituto de Psiquiatria, Universidade Federal do Rio de Janeiro, Avenida Venceslau Brás 71, Rio de Janeiro, RJ, Brazil.

出版信息

Arq Neuropsiquiatr. 2007 Sep;65(3A):642-6. doi: 10.1590/s0004-282x2007000400019.

DOI:10.1590/s0004-282x2007000400019

PMID:17876407

Abstract

The aim of the present study was to assess the effects of functional electrical stimulation (FES) on cortical interhemispheric asymmetry. Electrostimulation was performed on the right forearm to stimulate the extension of the index finger. EEG activity was recorded simultaneously. The sample included 45 subjects randomly divided into 3 groups of 15 subjects each: control group (submitted to 24 blocks of stimulation at a null intensity current), group 1 (24 blocks) and group 2 (36 blocks). Interhemispheric asymmetry between F3-F4, C3-C4 and P3-P4 was analyzed through an Anova. Results pointed out to a group x electrode interaction and a general tendency of asymmetry decrease after stimulation.

摘要

本研究的目的是评估功能性电刺激（FES）对皮质半球间不对称性的影响。对右侧前臂进行电刺激以诱发食指伸展。同时记录脑电图活动。样本包括45名受试者，随机分为3组，每组15名受试者：对照组（以零强度电流进行24次刺激）、第1组（24次刺激）和第2组（36次刺激）。通过方差分析（Anova）分析F3 - F4、C3 - C4和P3 - P4之间的半球间不对称性。结果表明存在组×电极相互作用，且刺激后不对称性有总体降低趋势。