功能性近红外光谱技术在利手、非利手主动抓握-释放任务下脑区激活研究中的应用

目的 探讨功能性近红外光谱技术(fNIRS)观察健康人利手、非利手复杂运动模式下双侧感觉运动区(SMC)、运动前区(PMC)激活模式中的应用价值.方法 2019年8月至12月,社区招募右利手健康人15例,采用Block设计,执行抓握-释放握力器任务,于双侧SMC、PMC和前额叶皮质行fNIRS探测,根据氧合血红蛋白和脱...

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

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.