Spatial conceptual influences on the coordination of bimanual actions: when a dual task becomes a single task.

Abstract:

:When the left and right hands produce 2 different rhythms simultaneously, coordination of the hands is difficult unless the rhythms can be integrated into a unified temporal pattern. In the present study, the authors investigated whether a similar account can be applied to the spatial domain. Participants (N = 8) produced a movement trajectory of semicircular form in single-limb and bimanual conditions. In the bimanual tasks, 1 limb moved above the other in the frontal plane. Bimanual unified tasks were constructed so that the spatial paths to be produced by the 2 limbs could be easily conceptualized as parts of a unified circle pattern. Bimanual distinct tasks availed a less obvious spatial pattern that would unify the 2 tasks, despite similar demands placed on the coordination dynamics in the 2 cases (e.g., the phase relations). The authors conclude that a dual task becomes a single task, and interlimb interference is reduced, when the spatial patterns produced by the 2 hands form a geometric arrangement that can be conceptualized as a unified representation.

journal_name

J Mot Behav

authors

Franz EA,Zelaznik HN,Swinnen SS,Walter C

doi

10.1080/00222890109601906

keywords:

subject

Has Abstract

pub_date

2001-03-01 00:00:00

pages

103-12

issue

1

eissn

0022-2895

issn

1940-1027

journal_volume

33

pub_type

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