Cross-correlation studies of movement related cortical potentials during unilateral and bilateral muscle contractions in humans

被引:30
作者
Oda, S [1 ]
Moritani, T [1 ]
机构
[1] KYOTO UNIV,GRAD SCH HUMAN & ENVIRONM STUDIES,APPL PHYSIOL LAB,SAKYO KU,KYOTO 606,JAPAN
来源
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY AND OCCUPATIONAL PHYSIOLOGY | 1996年 / 74卷 / 1-2期
关键词
cross-correlation; movement-related cortical potential; common drive;
D O I
10.1007/BF00376491
中图分类号
Q4 [生理学];
学科分类号
071003 ;
摘要
A useful method of studying the degree of association between two signals of varying amplitude in the time domain is to use cross-correlation analysis. We applied this to the movement-related cortical potentials digitally filtered so as to eliminate the low frequency component before applying it during maximal unilateral left (UL L), unilateral right (UL R) and bilateral(BL) contractions in 11 right-handed subjects. The recording electrode sites were over the right and left motor cortex areas (C3 and C4). The BL condition revealed higher cross-correlation levels of cortical activities between the two hemispheres than in UL L or UL R contraction [UL L, r=0.68 (SEM 0.05); UL R, r=0.73 (SEM 0.03); BL, r=0.76 (SEM 0.02)]. The UL R revealed a positive phase difference [5 (SEM 2) ms] when the maximal cross-correlation coefficient was shown and UL L showed a negative phase difference [5 (SEM 3) ms]. However, BL revealed a smaller phase difference [2 (SEM 1) ms] than that for UL. It was concluded that during maximal BL contraction cortical cellular activities in both hemispheres was more synchronized in amplitude and time course compared with maximal UL contractions. Our data suggested that central common drive existed between the right and left motor areas during the maximal BL handgrip contractions and the amplitude of potentials of both hemispheres was modified by the interhemispheric inhibition mechanism as reported in other studies.
引用
收藏
页码:29 / 35
页数:7
相关论文
共 39 条
[1]   CROSS-CORRELATION ANALYSIS OF INTERNEURONAL CONNECTIVITY IN THE MOTOR CORTEX OF THE MONKEY [J].
ALLUM, JHJ ;
HEPPREYMOND, MC ;
GYSIN, R .
BRAIN RESEARCH, 1982, 231 (02) :325-334
[2]   EFFECTS OF TRANSCALLOSAL VOLLEYS ON PYRAMIDAL TRACT CELL ACTIVITY OFCAT [J].
ASANUMA, H ;
OKUDA, O .
JOURNAL OF NEUROPHYSIOLOGY, 1962, 25 (02) :198-&
[3]   MOVEMENT-RELATED SLOW POTENTIALS .1. A CONTRAST BETWEEN FINGER AND FOOT MOVEMENTS IN RIGHT-HANDED SUBJECTS [J].
BRUNIA, CHM ;
VANDENBOSCH, WEJ .
ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY, 1984, 57 (06) :515-527
[4]  
DAVY NJ, 1994, J PHYSIOL-LONDON, V476, pP33
[5]  
DAVY NJ, 1994, J PHYSIOL-LONDON, V481, pP51
[6]   BEHAVIOR OF HUMAN MOTOR UNITS IN DIFFERENT MUSCLES DURING LINEARLY VARYING CONTRACTIONS [J].
DE LUCA, CJ ;
LEFEVER, RS ;
MCCUE, MP ;
XENAKIS, AP .
JOURNAL OF PHYSIOLOGY-LONDON, 1982, 329 (AUG) :113-128
[7]  
DE LUCA CJ, 1985, J EXP BIOL, V115, P125
[8]   CONTROL SCHEME GOVERNING CONCURRENTLY ACTIVE HUMAN MOTOR UNITS DURING VOLUNTARY CONTRACTIONS [J].
DE LUCA, CJ ;
LEFEVER, RS ;
MCCUE, MP ;
XENAKIS, AP .
JOURNAL OF PHYSIOLOGY-LONDON, 1982, 329 (AUG) :129-142
[9]  
DEECKE L, 1969, EXP BRAIN RES, V7, P158
[10]   VOLUNTARY FINGER MOVEMENT IN MAN - CEREBRAL POTENTIALS AND THEORY [J].
DEECKE, L ;
GROZINGER, B ;
KORNHUBER, HH .
BIOLOGICAL CYBERNETICS, 1976, 23 (02) :99-119