alexa Near-Infrared Spectroscopy and Motor Lateralization after Stroke: A Case Series Study
ISSN: 2329-9096

International Journal of Physical Medicine & Rehabilitation
Open Access

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Research Article

Near-Infrared Spectroscopy and Motor Lateralization after Stroke: A Case Series Study

Kotaro Takeda1,2, Yukihiro Gomi3 and Hiroyuki Kato4*

1Clinical Research Center, National Hospital Organization Murayama Medical Center, 2-37-1 Gakuen, Musashimurayama, Tokyo 208-0011, Japan

2Fujita Memorial Nanakuri Institute, Fujita Health University, 423 Oodoricho, Tsu, Mie 514-1296, Japan

3Department of Rehabilitation, International University of Health and Welfare Hospital, 537-3 Iguchi, Nasushiobara, Tochigi 329-2763, Japan

4Department of Neurology, International University of Health and Welfare Hospital, 537-3 Iguchi, Nasushiobara, Tochigi 329-2763, Japan

*Corresponding Author:
Hiroyuki Kato
Department of Neurology
International University of Health and Welfare Hospital
537-3 Iguchi, Nasushiobara, 329-2763, Japan
Tel: +81-287-39-3060
Fax: +81-287-39-3001
E-mail: [email protected]

Received Date: February 28, 2014; Accepted Date: April 21, 2014; Published Date: April 23, 2014

Citation: Takeda K, Gomi Y, Kato H (2014) Near-Infrared Spectroscopy and Motor Lateralization after Stroke: A Case Series Study. Int J Phys Med Rehabil 2:192. doi: 10.4172/2329-9096.1000192

Copyright: © 2014 Kato H, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Near-infrared spectroscopy (NIRS), which allows non-invasive monitoring of cerebral activation, might be a useful tool to assess brain activity in stroke patients because it allows recording without imposing restraints on the subject’s posture. Previous NIRS studies on stroke patients have focused on brain activation in patients with mild impairment or full recovery, and there has been a lack of data on patients without recovery. In the present study, we compared the hand movement-related brain activation pattern and laterality balance of healthy subjects and of stroke patients with mild or moderate hemiparesis in the chronic phase. In normal subjects, predominantly contralateral activation was observed during unilateral hand grasping. Similar contralateral-predominant activation was observed during grasping with the unaffected hand in stroke patients, and during affected-hand grasping in patients with mild hemiparesis. However, abnormal activation patterns, i.e., bilaterally increased activation and ipsilateral-predominant activation, were observed during affected-hand grasping in patients with moderate hemiparesis. These findings suggest that differences in brain activation patterns in stroke patients are well detected by NIRS.

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