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Inter-limb coupling of proximal and distal hand actions
- Publication Year :
- 2018
-
Abstract
- Past studies have revealed connections in directional programming between hands. The present study investigated whether there could also be interaction in programming proximal and distal components of a prehensile hand action. In Experiment 1, the participants performed simultaneously either a push or pull response with the left hand and the grip closure or opening with the right hand. In Experiment 2, the push and pull responses of the left hand were performed together with the precision or power grip responses of the right hand. The participants showed preference, measured in reaction times, to couple the push response with the grip opening and the precision grip, whereas the pull response was associated with the grip closure and the power grip. The study shows for the first time a systematic interaction in proximal and distal prehensile components between two hands. We propose that these effects reflect inter- and intra-limb connections between the representations that prepare the arm extension for the outward reaching, the finger extension for the grip opening, and the motor processes that prepare the precision grip. Conversely, there appear to be connections between the representations that prepare the arm flexion for the inward directed hand movements, the flexion of the thumb and the fingers for the grip closure, and flexion of four fingers for the power grip.
- Subjects :
- Adult
Male
medicine.medical_specialty
Grasping
515 Psychology
Behavioural study
Thumb
Motor Activity
050105 experimental psychology
Hand movements
Interlimb connections
03 medical and health sciences
Young Adult
0302 clinical medicine
Physical medicine and rehabilitation
medicine
Humans
0501 psychology and cognitive sciences
SPECIFICATION
DIRECTION
Reaction time
COORDINATION
MOVEMENTS
IDENTIFICATION
Arm flexion
General Neuroscience
05 social sciences
Action planning
Reaching
CONSTRAINTS
Hand
REPRESENTATIONS
body regions
PREHENSION
medicine.anatomical_structure
Motor processes
Push and pull
HUMAN PARIETAL
ARM
Female
Psychology
human activities
030217 neurology & neurosurgery
Prehensile tail
Psychomotor Performance
Finger extension
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....ae3be1957709145464b8f7077824961d