ArticleJournal of neurophysiology2019
Case Studies in Neuroscience: The central and somatosensory contributions to finger interdependence and coordination: lessons from a study of a "deafferented person".
Article in Journal of neurophysiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 46 citations in OpenAlex.
- Article
- Proprioceptive short-term memory in passive motor learning.Scientific reports · 2023Article
- A rare case of deafferentation reveals an essential role of proprioception in bilateral coordination.Neuropsychologia · 2021Article
- The role of somatosensation in automatic visuo-motor control: a comparison of congenital and acquired sensory loss.Experimental brain research · 2021Article
- Perturbation-induced fast drifts in finger enslaving.Experimental brain research · 2021Article
- Somatosensory deafferentation reveals lateralized roles of proprioception in feedback and adaptive feedforward control of movement and posture.Current opinion in physiology · 2021Article
- Synergic control of action in levodopa-naïve Parkinson's disease patients: II. Multi-muscle synergies stabilizing vertical posture.Experimental brain research · 2020Article
- The neural foundations of handedness: insights from a rare case of deafferentation.Journal of neurophysiology · 2020Article
- Observational
- Loss of haptic feedback impairs control of hand posture: a study in chronically deafferented individuals when grasping and lifting objects.Experimental brain research · 2019Article
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 4 countries.
Funding
Abstract
We tested finger force interdependence and multifinger force-stabilizing synergies in a patient with large-fiber peripheral neuropathy ("deafferented person"). The subject performed a range of tasks involving accurate force production with one finger and with four fingers. In one-finger tasks, nontask fingers showed unintentional force production (enslaving) with an atypical pattern: very large indices for the lateral (index and little) fingers and relatively small indices for the central (middle and ring) fingers. Indices of multifinger synergies stabilizing total force and of anticipatory synergy adjustments in preparation to quick force pulses were similar to those in age-matched control females. During constant force production, removing visual feedback led to a slow force drift to lower values (by ~25% over 15 s). The results support the idea of a neural origin of enslaving and suggest that the patterns observed in the deafferented person were reorganized based on everyday manipulation tasks. The lack of significant changes in the synergy index shows that synergic control can be organized in the absence of somatosensory feedback. We discuss the control of the hand in deafferented persons within the α-model of the equilibrium-point hypothesis and suggest that force drift results from an unintentional drift of the control variables to muscles toward zero values.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.