《Chinese Journal of Rehabilitation Theory and Practice》 ›› 2021, Vol. 27 ›› Issue (9): 1066-1071.doi: 10.3969/j.issn.1006-9771.2021.09.010

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Application of Functional Near-infrared Spectroscopy in Brain Area Activation Research: Dominant and Non-dominant Hand under Active Grasp-release Task

LI Chao-jin-zi1a,HUANG Fu-biao1b,DU Xiao-xia1a,ZHANG Hao-jie1,ZHANG Tong1a()   

  1. 1. Capital Medical University School of Rehabilitation Medicine, Beijing 100068, China
    2. a. Department of Neurological Rehabilitation; b. Department of Occupational Therapy, Beijing Bo'ai Hospital, China Rehabilitation Research Center, Beijing 100068, China
  • Received:2021-04-30 Revised:2021-06-18 Published:2021-09-25 Online:2021-10-09
  • Contact: ZHANG Tong E-mail:tom611@126.com
  • Supported by:
    China Rehabilitation Research Center Research Project(2020-Q4)

Abstract:

Objective To apply functional near-infrared spectroscopy (fNIRS) to analyze brain activity pattern of bilateral sensorimotor cortex (SMC) and premotor cortex (PMC) during complex dominant and non-dominant hand movement in healthy subjects.Methods From August to December, 2019, 15 right-handed healthy residents were recruited. The block designed grip-release task was used in the subjects, and detected oxyhemoglobin and deoxyhemoglobin concentration with fNIRS to analyze the activation of bilateral SMC, PMC and prefontal cortex in term of activation channels and intensity.Results For the oxyhemoglobin concentration, the number of activated channels was the same in both hemispheres during right (dominant) hand movement, and the activation of left SMC was stronger (P < 0.05); however, more channels were activated in the right hemisphere during left (non-dominant) hand movement, and the activation of right SMC was stronger (P < 0.05). For the deoxyhemoglobin concentration, more channels were activated in the contralateral hemisphere during either dominant or non-dominant hand movement, and the activation of left SMC, Channel 12 (left PMC) and Channel 26 (right PMC) were stronger during right (dominant) hand movement (P < 0.05).Conclusion It is feasible to use fNIRS to study the activation of hand movement related brain regions during complex movement of dominant and non-dominant hand, especially with the results of oxyhemoglobin concentration.

Key words: functional near-infrared spectroscopy, upper extremity, motor function, sensorimotor cortex, premotor cortex