Trial measurement of movement-related cortical dynamics using electroencephalography and diffuse correlation spectroscopy

摘要: To better characterize movement-related neurophysiological change, the authors propose to measure not only neural activity through electroencephalogram (EEG) but also cerebral blood flow (CBF) using a new technology, near-infrared diffuse correlation spectroscopy (DCS). A preliminary trial is described, in which EEG, DCS, and exerted force were simultaneously recorded during cue-triggered hand grip task. Eight channels of EEG acquired from frontal, central, occipital regions, DCS signals collected locations over frontal motor cortex. Event-related desynchronization (ERD) was observed at onset movement lasted until ceased. area showed significant ERD 8–13 Hz mu band (p<0.001). Mean CBF increased task by 6.8 % (p<0.001) location 4.5 location, respectively. These observations suggest that combination electrical optical measurements may provide more complete characterization brain dynamics related movement. broader study required explore potential benefit these combined when used as command for brain-computer interfaces.