Acute immobilisation facilitates premotor preparatory activity for the non-restrained hand when facing grasp affordances
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Acute immobilisation facilitates premotor preparatory activity for the non-restrained hand when facing grasp affordances. / Kühn, Simone; Werner, Anika; Lindenberger, Ulman; Verrel, Julius.
In: NEUROIMAGE, Vol. 92, 15.05.2014, p. 69-73.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Acute immobilisation facilitates premotor preparatory activity for the non-restrained hand when facing grasp affordances
AU - Kühn, Simone
AU - Werner, Anika
AU - Lindenberger, Ulman
AU - Verrel, Julius
N1 - Copyright © 2014. Published by Elsevier Inc.
PY - 2014/5/15
Y1 - 2014/5/15
N2 - Use and non-use of body parts during goal-directed action are major forces driving reorganisation of neural processing. We investigated changes in functional brain activity resulting from acute short-term immobilisation of the dominant right hand. Informed by the concept of object affordances, we predicted that the presence or absence of a limb restraint would influence the perception of graspable objects in a laterally specific way. Twenty-three participants underwent fMRI scanning during a passive object-viewing task before the intervention as well as with and without wearing an orthosis. The right dorsal premotor cortex and the left cerebellum were more strongly activated when the handle of an object was oriented towards the left hand while the right hand was immobilised compared with a situation where the hand was not immobilised. The cluster in the premotor cortex showing an interaction between condition (with restraint, without restraint) and stimulus action side (right vs. left) overlapped with the general task vs. baseline contrast prior to the intervention, confirming its functional significance for the task. These results show that acute immobilisation of the dominant right hand leads to rapid changes of the perceived affordance of objects. We conclude that changes in action requirements lead to almost instantaneous changes in functional activation patterns, which in turn may trigger structural cortical plasticity.
AB - Use and non-use of body parts during goal-directed action are major forces driving reorganisation of neural processing. We investigated changes in functional brain activity resulting from acute short-term immobilisation of the dominant right hand. Informed by the concept of object affordances, we predicted that the presence or absence of a limb restraint would influence the perception of graspable objects in a laterally specific way. Twenty-three participants underwent fMRI scanning during a passive object-viewing task before the intervention as well as with and without wearing an orthosis. The right dorsal premotor cortex and the left cerebellum were more strongly activated when the handle of an object was oriented towards the left hand while the right hand was immobilised compared with a situation where the hand was not immobilised. The cluster in the premotor cortex showing an interaction between condition (with restraint, without restraint) and stimulus action side (right vs. left) overlapped with the general task vs. baseline contrast prior to the intervention, confirming its functional significance for the task. These results show that acute immobilisation of the dominant right hand leads to rapid changes of the perceived affordance of objects. We conclude that changes in action requirements lead to almost instantaneous changes in functional activation patterns, which in turn may trigger structural cortical plasticity.
KW - Adult
KW - Anticipation, Psychological
KW - Brain Mapping
KW - Female
KW - Functional Laterality
KW - Hand
KW - Hand Strength
KW - Humans
KW - Immobilization
KW - Magnetic Resonance Imaging
KW - Male
KW - Motor Cortex
KW - Neuronal Plasticity
KW - Orientation
KW - Perception
KW - Psychomotor Performance
KW - Spatial Behavior
U2 - 10.1016/j.neuroimage.2014.02.003
DO - 10.1016/j.neuroimage.2014.02.003
M3 - SCORING: Journal article
C2 - 24531050
VL - 92
SP - 69
EP - 73
JO - NEUROIMAGE
JF - NEUROIMAGE
SN - 1053-8119
ER -