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Online proprioception feeds plasticity of arm representation following tool-use in healthy aging
- Source :
- Scientific Reports, Scientific Reports, Nature Publishing Group, 2020, 10 (1), ⟨10.1038/s41598-020-74455-5⟩, Scientific Reports, 10, Scientific Reports, 2020, 10 (1), ⟨10.1038/s41598-020-74455-5⟩, Scientific Reports, Vol 10, Iss 1, Pp 1-9 (2020)
- Publication Year :
- 2020
- Publisher :
- Nature Publishing Group UK, 2020.
-
Abstract
- Contains fulltext : 226711.pdf (Publisher’s version ) (Open Access) Following tool-use, the kinematics of free-hand movements are altered. This modified kinematic pattern has been taken as a behavioral hallmark of the modification induced by tool-use on the effector representation. Proprioceptive inputs appear central in updating the estimated effector state. Here we questioned whether online proprioceptive modality that is accessed in real time, or offline, memory-based, proprioception is responsible for this update. Since normal aging affects offline proprioception only, we examined a group of 60 year-old adults for proprioceptive acuity and movement's kinematics when grasping an object before and after tool-use. As a control, participants performed the same movements with a weight - equivalent to the tool - weight-attached to their wrist. Despite hampered offline proprioceptive acuity, 60 year-old participants exhibited the typical kinematic signature of tool incorporation: Namely, the latency of transport components peaks was longer and their amplitude reduced after tool-use. Instead, we observed no kinematic modifications in the control condition. In addition, online proprioception acuity correlated with tool incorporation, as indexed by the amount of kinematics changes observed after tool-use. Altogether, these findings point to the prominent role played by online proprioception in updating the body estimate for the motor control of tools. 9 p.
- Subjects :
- Male
Hand Strength
Tool Use Behavior
Action, intention, and motor control
Cognitive ageing
lcsh:R
lcsh:Medicine
[SCCO] Cognitive science
Middle Aged
Wrist
Proprioception
Article
Biomechanical Phenomena
Healthy Aging
[SCCO]Cognitive science
Human behaviour
Arm
Humans
lcsh:Q
Perception
Female
lcsh:Science
Aged
Subjects
Details
- Language :
- English
- ISSN :
- 20452322
- Volume :
- 10
- Database :
- OpenAIRE
- Journal :
- Scientific Reports
- Accession number :
- edsair.pmid.dedup....1fb10a4432e9d78718f28dae48fc2d25