Extrinsic tau-coupling and the regulation of interceptive reaching under varying task constraints

Joanne Smith; Madeleine Grealy; Gert-Jan Pepping

doi:10.1123/mc.2013-0107

Extrinsic tau-coupling and the regulation of interceptive reaching under varying task constraints

Joanne Smith, Madeleine Grealy, Gert-Jan Pepping

Psychology

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

We investigated a general theory accounting for the guidance of ongoing movements in an interceptive reaching task. The aim was to assess the premise of tau-coupling that the coupling constant k, the ratio of taus(τs) of motion gaps between hand and object, reflects the kinematics of the on-going movement. The spatial and temporal constraints of the interceptive action were manipulated in three task conditions. While the time dependent counterpart of k, K(t) exhibited task effects, k itself could not distinguish between task manipulations. K(t) showed large variability during the initial acceleration phase, small variability during the rest of the movement, and task dependent changes during the final deceleration phase of interception. The findings highlight the importance of clarifying what constitutes as τ-coupling.

Language	English
Pages	347 – 367
Number of pages	21
Journal	Motor Control
Volume	18
Issue number	4
DOIs	10.1123/mc.2013-0107
Publication status	Published - Oct 2014

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Deceleration

Biomechanical Phenomena

Hand

Keywords

interceptive reaching
hand object motion gaps
τ-coupling

Cite this

Smith, J., Grealy, M., & Pepping, G-J. (2014). Extrinsic tau-coupling and the regulation of interceptive reaching under varying task constraints. Motor Control, 18(4), 347 – 367. https://doi.org/10.1123/mc.2013-0107

Smith, Joanne ; Grealy, Madeleine ; Pepping, Gert-Jan. / Extrinsic tau-coupling and the regulation of interceptive reaching under varying task constraints. In: Motor Control. 2014 ; Vol. 18, No. 4. pp. 347 – 367.

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Smith, J, Grealy, M & Pepping, G-J 2014, 'Extrinsic tau-coupling and the regulation of interceptive reaching under varying task constraints' Motor Control, vol. 18, no. 4, pp. 347 – 367. https://doi.org/10.1123/mc.2013-0107

Extrinsic tau-coupling and the regulation of interceptive reaching under varying task constraints. / Smith, Joanne; Grealy, Madeleine; Pepping, Gert-Jan.

In: Motor Control, Vol. 18, No. 4, 10.2014, p. 347 – 367.

Research output: Contribution to journal › Article

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