title: Study of Repetitive Movements Induced Oscillatory Activities in Healthy Subjects and Chronic Stroke Patients.
abstract: Repetitive movements at a constant rate require the integration of internal time counting and motor neural networks. Previous studies have proved that humans can follow short durations automatically (automatic timing) but require more cognitive efforts to track or estimate long durations. In this study, we studied sensorimotor oscillatory activities in healthy subjects and chronic stroke patients when subjects were performing repetitive finger movements. We found the movement-modulated changes in alpha and beta oscillatory activities were decreased with the increase of movement rates in finger lifting of healthy subjects and the non-paretic hands in stroke patients, whereas no difference was found in the paretic-hand movements at different movement rates in stroke patients. The significant difference in oscillatory activities between movements of non-paretic hands and paretic hands could imply the requirement of higher cognitive efforts to perform fast repetitive movements in paretic hands. The sensorimotor oscillatory response in fast repetitive movements could be a possible indicator to probe the recovery of motor function in stroke patients.
authors.affiliation: Division of Cardiovascular Surgery, Taipei Medical University Hospital, Taipei, Taiwan.
authors.forename: Chuan-Chih
authors.initials: CC
authors.lastname: Hsu
authors.affiliation: Department of Rehabilitation, Tao Yuan General Hospital, Taoyuan, Taiwan.
authors.forename: Wai-Keung
authors.initials: WK
authors.lastname: Lee
authors.affiliation: Department of Electrical Engineering, National Central University, Taoyuan City 32001, Taiwan.
authors.forename: Kuo-Kai
authors.initials: KK
authors.lastname: Shyu
authors.affiliation: Division of Cardiovascular Surgery, Taipei Veterans General Hospital, Taipei, Taiwan.
authors.forename: Hsiao-Huang
authors.initials: HH
authors.lastname: Chang
authors.affiliation: Science Education Center, National Taiwan Normal University, Taipei, Taiwan.
authors.forename: Ting-Kuang
authors.initials: TK
authors.lastname: Yeh
authors.affiliation: Department of Electrical Engineering, National Central University, Taoyuan City 32001, Taiwan.
authors.forename: Hao-Teng
authors.initials: HT
authors.lastname: Hsu
authors.affiliation: Science Education Center, National Taiwan Normal University, Taipei, Taiwan.
authors.forename: Chun-Yen
authors.initials: CY
authors.lastname: Chang
authors.affiliation: Section of General Diagnostic Radiology, Taipei Medical University Hospital, Taipei, Taiwan.
authors.forename: Gong-Yau
authors.initials: GY
authors.lastname: Lan
authors.affiliation: Department of Electrical Engineering, National Central University, Taoyuan City 32001, Taiwan.
authors.forename: Po-Lei
authors.initials: PL
authors.lastname: Lee
mesh_terms: D000368:Aged; D016022:Case-Control Studies; D005260:Female; D005385:Fingers / Q000503:physiopathology; D006225:Hand / Q000503:physiopathology*; D064368:Healthy Volunteers; D006801:Humans; D008297:Male; D008875:Middle Aged; D009068:Movement / Q000502:physiology*; D010291:Paresis / Q000503:physiopathology*; D011597:Psychomotor Performance; D020127:Recovery of Function; D020521:Stroke / Q000150:complications* / Q000503:physiopathology