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Development of human precision grip

by Ann-christin Eliasson, Hans Forssberg, Komei Ikuta, Ingmari Westling, Roland Johansson, A. -c. Eliasson, H. Forssberg, K. Ikuta Ape, G. Westling, R. Johansson - Experimental Brain Research , 1995
"... Abstract When an object held by a precision grip is subjected to an abrupt vertical load perturbation, somato-sensory input from the digits triggers an increase in grip force to restore an adequate safety margin, preventing frictional slips. In adults the response occurs after a la-tency of 60-80 ms ..."
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Abstract When an object held by a precision grip is subjected to an abrupt vertical load perturbation, somato-sensory input from the digits triggers an increase in grip force to restore an adequate safety margin, preventing frictional slips. In adults the response occurs after a la-tency of 60

Somatosensory control of precision grip

by Exp Brain Res, S. Johansson, Charlotte Hager, Lars Backstrom , 1991
"... during unpredictable pulling loads 111. Impairments during digital anesthesia ..."
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during unpredictable pulling loads 111. Impairments during digital anesthesia

Factors influencing the force control during precision grip

by G. Westling, R. S. Johansson - University of Pennsylvania , 1983
"... Summary. A small object was gripped between the tips of the index fingei and thumb and held stationary in space. Its weight and surface structure could be changed between consecutive lifting trials, without changing its visual appearance. The grip force and the vertical lifting force acting on the o ..."
Abstract - Cited by 84 (3 self) - Add to MetaCart
Summary. A small object was gripped between the tips of the index fingei and thumb and held stationary in space. Its weight and surface structure could be changed between consecutive lifting trials, without changing its visual appearance. The grip force and the vertical lifting force acting

Effects of Muscimol Inactivation of the Cerebellar Nuclei on Precision Grip

by D. Timmann, R. Citron, S. Watts, J. Hore, J Neurophysiol, U. Castiello, C. Begliomini, W. Taube, C. Leukel, M. Schubert, M. Gruber, T. Rantalainen, A. Gollhofer, J Neurophysiol, C. R. Mason, C. M. Hendrix, T. J. Ebner, J Neurophysiol, J. Hore, S. Watts, J Neurophysiol, J. Monzee, T. Drew, A. M. Smith, J Neurophysiol , 2008
"... You might find this additional information useful... This article cites 42 articles, 22 of which you can access free at: ..."
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You might find this additional information useful... This article cites 42 articles, 22 of which you can access free at:

Precision Grip Force Dynamics: A System Identification Approach

by Anders Fagergren, Örjan Ekeberg, Hans Forssberg , 2000
"... A linear model of the dynamics of the human precision grip is presented. The transfer function is identified as representing the peripheral motor subsystem, from the motoneuron pool to the final production of a grip force between the tip of the index finger and the thumb. The transfer function captu ..."
Abstract - Cited by 3 (2 self) - Add to MetaCart
A linear model of the dynamics of the human precision grip is presented. The transfer function is identified as representing the peripheral motor subsystem, from the motoneuron pool to the final production of a grip force between the tip of the index finger and the thumb. The transfer function

Somatosensory control of precision grip during unpredictable pulling loads

by S. Johansson, Charlotte Hager, Ronald Riso - Experimental Brain Research , 1992
"... Summary. In the previous paper regarding the somato-sensory control of the human precision grip, we concluded that the elicited automatic grip force adjustments are graded by the amplitude of the imposed loads when restraining an 'active7 object subjected to unpredictable pulling forces (Johans ..."
Abstract - Cited by 18 (3 self) - Add to MetaCart
Summary. In the previous paper regarding the somato-sensory control of the human precision grip, we concluded that the elicited automatic grip force adjustments are graded by the amplitude of the imposed loads when restraining an 'active7 object subjected to unpredictable pulling forces

Programmed and triggered actions to rapid load changes during precision grip

by Exp Brain Res, R. S. Johansson, G. Westling , 1988
"... Summary. A test object (grip apparatus) was held at its upper part using a precision grip. Small balls were dropped into a target cup at the bottom of the apparatus. The grip force, the load force (vertical lifting force) and the vertical movement were measured. Electromyographic activity (e.m.g.) w ..."
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Summary. A test object (grip apparatus) was held at its upper part using a precision grip. Small balls were dropped into a target cup at the bottom of the apparatus. The grip force, the load force (vertical lifting force) and the vertical movement were measured. Electromyographic activity (e

Single-Unit Responses in Somatosensory Cortex to Precision Grip of Textured Surfaces

by Stephanie Naufel , Jason Robert
"... i ABSTRACT In the past decade, research on the motor control side of neuroprosthetics has steadily gained momentum. However, modern research in prosthetic development supplements a focus on motor control with a concentration on sensory feedback. Simulating sensation is a central issue because witho ..."
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and representation of cutaneous sensation by evaluating performance and neural activity in somatosensory cortex (SI) during a grasp task. A non-human primate (Macaca mulatta) was trained to reach out and grasp textured instrumented objects with a precision grip. Two different textures for the objects were used, 100

The effects of digital anesthesia on force control using a precision grip

by Yves Lamarre, Allan, M. Smith - Journal of Neurophysiology , 2003
"... J Neuro- ..."
Abstract - Cited by 18 (0 self) - Add to MetaCart
Abstract not found

Tactile afferent input influencing motor coordination during precision grip

by R. S. Johansson, G. Westling - In A. Struppler & A. Weindl (Eds.), Clinical , 1987
"... The remarkable capacity and versatility of the human hand in precise manipula-tory tasks is undoubtedly dependent upon a number of neural factors. One such factor is the tactile sensory innervation of the glabrous skin area, i.e. the hairless skin of the volar aspect of the hand. Indeed, Mott and Sh ..."
Abstract - Cited by 2 (2 self) - Add to MetaCart
The remarkable capacity and versatility of the human hand in precise manipula-tory tasks is undoubtedly dependent upon a number of neural factors. One such factor is the tactile sensory innervation of the glabrous skin area, i.e. the hairless skin of the volar aspect of the hand. Indeed, Mott
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