Effects of explicit sway-minimization on postural-suprapostural dual-task performance

被引:84
作者
Mitra, S [1 ]
Fraizer, E [1 ]
机构
[1] Univ Warwick, Dept Psychol, Inst Appl Cognit Sci, Coventry CV4 7AL, W Midlands, England
基金
英国经济与社会研究理事会;
关键词
posture; vision; attention; performance; stance; stability;
D O I
10.1016/j.humov.2004.03.003
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Participants performed a visual search task under immersive visualization conditions while standing in open or closed stance. In the combined instruction condition, participants were asked to minimize their sway while they performed the search task, and in the search-only condition, they were advised that sway was not of interest, and they were asked to focus their efforts on performing the search task. Regardless of instructions, participants swayed more and made more errors as search load increased. Participants also succeeded in reducing their sway when asked to do so. While search in closed stance tended to be faster than in open stance under search-only instructions, this pattern reversed significantly under combined instructions. We suggest that neither the facilitatory control hypothesis nor any resource-competition model of postural-suprapostural dual-tasking can fully account for the observed interplay of task-facilitation and task-interference effects. We offer adaptive resource-sharing as an alternative to these theories. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:1 / 20
页数:20
相关论文
共 50 条
[1]   Postural control is scaled to level of postural threat [J].
Adkin, AL ;
Frank, JS ;
Carpenter, MG ;
Peysar, GW .
GAIT & POSTURE, 2000, 12 (02) :87-93
[2]   SPATIAL ORIENTATION FROM OPTIC FLOW IN THE CENTRAL VISUAL-FIELD [J].
ANDERSEN, GJ ;
DYRE, BP .
PERCEPTION & PSYCHOPHYSICS, 1989, 45 (05) :453-458
[3]   Effect of cognitive load on postural control [J].
Andersson, G ;
Hagman, J ;
Talianzadeh, R ;
Svedberg, A ;
Larsen, HC .
BRAIN RESEARCH BULLETIN, 2002, 58 (01) :135-139
[4]  
[Anonymous], 1993, ATTENTION SELECTION
[5]  
[Anonymous], 1983, STOCHASTIC MODELLING
[6]  
Carpenter MG, 1999, J VESTIBUL RES-EQUIL, V9, P277
[7]   Does articulation contribute to modifications of postural control during dual-task paradigms? [J].
Dault, MC ;
Yardley, L ;
Frank, JS .
COGNITIVE BRAIN RESEARCH, 2003, 16 (03) :434-440
[8]   Postural control and cognitive task performance in healthy participants while balancing on different support-surface configurations [J].
Dault, MC ;
Geurts, ACH ;
Mulder, TW ;
Duysens, J .
GAIT & POSTURE, 2001, 14 (03) :248-255
[9]   Influence of a visuo-spatial, verbal and central executive working memory task on postural control [J].
Dault, MC ;
Frank, JS ;
Allard, F .
GAIT & POSTURE, 2001, 14 (02) :110-116
[10]   Postural control: visual and cognitive manipulations [J].
Hunter, MC ;
Hoffman, MA .
GAIT & POSTURE, 2001, 13 (01) :41-48