Brief bimanual force pulses: Correlations between the hands in force and time

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Authors

Colleges, School and Institutes

Abstract

Three experiments assessed coupling phenomena in the coordination of bimanual force pulses. Experiment 1 required symmetric force pulses (equal target forces and rise times for both hands) using the index finger of each hand. As the authors expected, on the basis of bimanual pointing movement results, this experiment revealed positive correlations between both the force rise times and the force amplitudes of the two hands. Experiments 2 and 3 included asymmetric conditions with different target force amplitudes (Experiment 2) or target rise times (Experiment 3). In Experiment 2 force amplitudes but not rise times were fully decoupled in the asymmetric condition. In the asymmetric condition of Experiment 3, however, neither rise times nor force amplitudes were fully decoupled. The results suggest a hierarchical control structure with temporal control dominating nontemporal control of bimanual force coordination.

Details

Original languageEnglish
Pages (from-to)1485-1497
Number of pages13
JournalJournal of Experimental Psychology: Human Perception and Performance
Volume27
Issue number6
Publication statusPublished - 1 Jan 2001