Attention as a mediating variable in the dynamics of bimanual coordination

被引:47
作者
Wuyts, IJ
Summers, JJ
Carson, RG
Byblow, WD
Semjen, A
机构
[1] UNIV SO QUEENSLAND, DEPT PSYCHOL, TOOWOOMBA, QLD 4350, AUSTRALIA
[2] KATHOLIEKE UNIV LEUVEN, LAB MOTOR CONTROLE, B-3001 LOUVAIN, BELGIUM
[3] UNIV QUEENSLAND, DEPT HUMAN MOVEMENT, BRISBANE, QLD 4072, AUSTRALIA
[4] CNRS, CTR RECH NEUROSCI COGNIT, MARSEILLE, FRANCE
关键词
attention; bimanual coordination; dynamics; manual asymmetries;
D O I
10.1016/S0167-9457(96)00033-4
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
The influence of focal attention on the coordination dynamics in a bimanual circle drawing task was investigated. Six right-handed and seven left-handed subjects performed bimanual circling movements, in two modes of coordination, symmetrical or asymmetrical. The frequency of movement was scaled by an auditory metronome from 1.50 Hz to 3.00 Hz in 7 steps. On each trial, subjects were required to attend either to the dominant hand, to a neutral position, or to the nondominant hand. The uniformity of the relative tangential angle was lower in asymmetrical than in symmetrical conditions, but was not influenced by the direction of attention. In the asymmetrical mode, shifts in RTA relations, suggestive of loss of stability, were evident as the movement frequency was increased. Typically, these shifts were mediated by distortions of the trajectory of the nondominant limb. When the nondominant hand was the focus of attention, movements of this hand were more circular, and temporal variability was reduced, at the cost of a greater deviation from the target frequency. Movements of the dominant hand were not affected by the direction of attention. The findings show that although directed attention acts to modify the coordination dynamics, it does so primarily at the level of the individual hands, rather then in terms of the relation between them.
引用
收藏
页码:877 / 897
页数:21
相关论文
共 41 条
[1]   CONTROL OF MOVEMENT IN THE PREFERRED AND NON-PREFERRED HANDS [J].
ANNETT, J ;
ANNETT, M ;
HUDSON, PTW ;
TURNER, A .
QUARTERLY JOURNAL OF EXPERIMENTAL PSYCHOLOGY, 1979, 31 (NOV) :641-652
[2]  
[Anonymous], 1979, FUNDAMENTALS EXPT DE
[3]   PREFERENTIAL COUPLING BETWEEN VOLUNTARY MOVEMENTS OF IPSILATERAL LIMBS [J].
BALDISSERA, F ;
CAVALLARI, P ;
CIVASCHI, P .
NEUROSCIENCE LETTERS, 1982, 34 (01) :95-100
[4]   ASYMMETRIES IN COUPLING DYNAMICS OF PERCEPTION AND ACTION [J].
BYBLOW, WD ;
CHUA, R ;
GOODMAN, D .
JOURNAL OF MOTOR BEHAVIOR, 1995, 27 (02) :123-137
[5]   PERFORMANCE ASYMMETRIES IN MULTIFREQUENCY COORDINATION [J].
BYBLOW, WD ;
GOODMAN, D .
HUMAN MOVEMENT SCIENCE, 1994, 13 (02) :147-174
[6]   MANUAL ASYMMETRIES - OLD PROBLEMS AND NEW DIRECTIONS [J].
CARSON, RG .
HUMAN MOVEMENT SCIENCE, 1993, 12 (05) :479-506
[7]  
CARSON RG, 1995, STUDIES PERCEPTION A, V3
[8]  
CARSON RG, 1994, J HUM MOVEMENT STUD, V27, P201
[9]  
CARSON RG, 1994, INTERLIMB COORDINATI
[10]  
CARSON RG, 1996, UNPUB Q J EXPT PSYCH