Temporary nerve block at selected digits revealed hand motor deficits in grasping tasks

Aude Carteron, Kerry McPartlan, Christina Gioeli, Emily Reid, Matt Turturro, Barry Hahn, Cynthia Benson, Wei Zhang, Sheng Li, Fan Gao, Kelly J. Cole

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Peripheral sensory feedback plays a crucial role in ensuring correct motor execution throughout hand grasp control. Previous studies utilized local anesthesia to deprive somatosensory feedback in the digits or hand, observations included sensorimotor deficits at both corticospinal and peripheral levels. However, the questions of how the disturbed and intact sensory input integrate and interact with each other to assist the motor program execution, and whether the motor coordination based on motor output variability between affected and non-affected elements (e.g., digits) becomes interfered by the local sensory deficiency, have not been answered. The current study aims to investigate the effect of peripheral deafferentation through digital nerve blocks at selective digits on motor performance and motor coordination in grasp control. Our results suggested that the absence of somatosensory information induced motor deficits in hand grasp control, as evidenced by reduced maximal force production ability in both local and non-local digits, impairment of force and moment control during object lift and hold, and attenuated motor synergies in stabilizing task performance variables, namely the tangential force and moment of force. These findings implied that individual sensory input is shared across all the digits and the disturbed signal from local sensory channel(s) has a more comprehensive impact on the process of the motor output execution in the sensorimotor integration process. Additionally, a feedback control mechanism with a sensation-based component resides in the formation process for the motor covariation structure.

Original languageEnglish (US)
Article number596
JournalFrontiers in Human Neuroscience
Volume10
Issue numberNOV2016
DOIs
StatePublished - Nov 25 2016

Fingerprint

Nerve Block
Hand Strength
Hand
Sensory Feedback
Aptitude
Task Performance and Analysis
Local Anesthesia

Keywords

  • Anesthesia
  • Anticipatory control
  • Force
  • Hand
  • Moment
  • Motor coordination
  • Motor synergy

ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology
  • Neurology
  • Psychiatry and Mental health
  • Biological Psychiatry
  • Behavioral Neuroscience

Cite this

Carteron, A., McPartlan, K., Gioeli, C., Reid, E., Turturro, M., Hahn, B., ... Cole, K. J. (2016). Temporary nerve block at selected digits revealed hand motor deficits in grasping tasks. Frontiers in Human Neuroscience, 10(NOV2016), [596]. https://doi.org/10.3389/fnhum.2016.00596

Temporary nerve block at selected digits revealed hand motor deficits in grasping tasks. / Carteron, Aude; McPartlan, Kerry; Gioeli, Christina; Reid, Emily; Turturro, Matt; Hahn, Barry; Benson, Cynthia; Zhang, Wei; Li, Sheng; Gao, Fan; Cole, Kelly J.

In: Frontiers in Human Neuroscience, Vol. 10, No. NOV2016, 596, 25.11.2016.

Research output: Contribution to journalArticle

Carteron, A, McPartlan, K, Gioeli, C, Reid, E, Turturro, M, Hahn, B, Benson, C, Zhang, W, Li, S, Gao, F & Cole, KJ 2016, 'Temporary nerve block at selected digits revealed hand motor deficits in grasping tasks', Frontiers in Human Neuroscience, vol. 10, no. NOV2016, 596. https://doi.org/10.3389/fnhum.2016.00596
Carteron, Aude ; McPartlan, Kerry ; Gioeli, Christina ; Reid, Emily ; Turturro, Matt ; Hahn, Barry ; Benson, Cynthia ; Zhang, Wei ; Li, Sheng ; Gao, Fan ; Cole, Kelly J. / Temporary nerve block at selected digits revealed hand motor deficits in grasping tasks. In: Frontiers in Human Neuroscience. 2016 ; Vol. 10, No. NOV2016.
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