手指力量增減對牽制效應與動作相關電位之影響

黃咸碩

doi:10.6840/CYCU.2007.00672、10.6840/cycu200700960

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手指力量增減對牽制效應與動作相關電位之影響

The effect of force enslaving and movement-related cortical potential associated with increment and decrement of finger force production

黃咸碩 , Masters　　Advisor：王士豪　　

繁體中文 DOI： 10.6840/CYCU.2007.00672、10.6840/cycu200700960

力量轉換；牽制力量；手指；腦波； EEG ； force transition ； finger ； enslaving force

Abstract │ Reference (45) │ Times Cited (10) │ Altmetrics

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In this research we used constant rate of force development (RFD), focusing on both force error and enslaving effect associated with different fingers and cortical activities during increment as well as decrement of force. Experimental subjects were 17 college students. They were instructed to use four fingers of right hand to produce force on specific patterns of force. Subjects were produce four force phases with 1s interval duration which were ramp phase, first static phase, transition phase and second static phase (2s), respectively.

Behaviorally, the index finger revealed the least force error and force enslaving whereas the ring finger represented the most in the force transition phase. The AVOVA indicated that there were significant effects during force decrement phase for both the force error and enslaving than those of force increment phase for all fingers. Not surprisingly, larger enslaving effect was found on the finger directly adjacent to the master finger for both force increment and decrement phases.

In terms of EEG results, the index finger revealed larger movement-related cortical potential (MRCP) whereas the ring finger displayed lower for both force increment and decrement phases. For the six components of MRCP (BP, MP, MMPramp, MMPstatic1, MMPtransition, MMPstatic2), the ANOVA indicated a significant main effect of force transition, higher amplitude of MRCP was found in the force decrement. Providing with the same RFD, due to the fact that higher amplitudes of MRCP in the force decrement, the results suggested more force control stability needed. On the other hand, force error, enslaving effect and the amplitude of MRCP in force decrement phase were pronounced than those of in force increment phase in each finger. Moreover, the result also indicated the index finger with less force error, less dependent and larger MRCP amplitudes, and reversing for the ring finger in both force increment and force decrement. Providing the behavioral and cortical data, the control characteristic for both force increment and force decrement demonstrated the task-specific mechanisms among four fingers.

Reference ( 45 ) 〈TOP〉

Becker, W., Iwase, R., Jurgens, R., & Kornhuber, H. H. (1976). Bereitshaftspotential preceding voluntary slow and rapid hand movement. The Responsive Brain, 99-102.
連結：
Chiang, H., Slobounov, S., & Ray, W. (2004). Practice-related modulations of force enslaving and cortical activity as revealed by EEG. Clinical Neurophysiology, 115(5), 1033-1043.
連結：
Danion, F., Latash, M. L., Li, Z. M., & Zatsiorsky, V. M. (2000). The effect of fatigue on multi-finger coordination in force production tasks in humans. Journal of Physiology, 534(1), 523-532.
連結：
Deecke, L., Scheid, P., & Kornhuber, H. H. (1969). Distribution of readiness potential, pre-motion positivist, and motor potential of human cerebral cortex preceding voluntary finger movements. Experimantal Brain Research, 7, 158-168.
連結：
Dettmers, G. R., FInk, G. H., Lemon, R. N., Stephan, K. M., Passingham, R. E., Silbersweig, D., et al. (1995). Relation between cerebral activity and force in the motor areas of the human brian. Journal of Neurophysiology, 74(2), 802-815.
連結：

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