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 | |
Publication status | Published - Oct 2014 |
Fingerprint
Keywords
- interceptive reaching
- hand object motion gaps
- τ-coupling
Cite this
}
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
TY - JOUR
T1 - Extrinsic tau-coupling and the regulation of interceptive reaching under varying task constraints
AU - Smith, Joanne
AU - Grealy, Madeleine
AU - Pepping, Gert-Jan
PY - 2014/10
Y1 - 2014/10
N2 - 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.
AB - 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.
KW - interceptive reaching
KW - hand object motion gaps
KW - τ-coupling
UR - http://journals.humankinetics.com/mc-current-issue
U2 - 10.1123/mc.2013-0107
DO - 10.1123/mc.2013-0107
M3 - Article
VL - 18
SP - 347
EP - 367
JO - Motor Control
T2 - Motor Control
JF - Motor Control
SN - 1087-1640
IS - 4
ER -