Grip Force Control during Virtual Object Interaction: Effect of Force Feedback, Accuracy Demands, and Training

2014 ◽  
Vol 7 (1) ◽  
pp. 37-47 ◽  
Author(s):  
Tricia L. Gibo ◽  
Amy J. Bastian ◽  
Allison M. Okamura
Keyword(s):  
Interaction Effect ◽  
Force Control ◽  
Grip Force ◽  
Force Feedback ◽  
Virtual Object ◽  
Object Interaction ◽  
Grip Force Control ◽  
And Training

Anticipatory and Reactive Grip Force Control in Patients with Alzheimer’s Disease: A Pilot Study

2021 ◽  
pp. 1-15
Author(s):  
Anna Gabriel ◽  
Carolin T. Lehner ◽  
Chiara Höhler ◽  
Thomas Schneider ◽  
Tessa P.T. Pfeiffer ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Pilot Study ◽  
Force Control ◽  
Grip Force ◽  
Object Manipulation ◽  
Step Test ◽  
Grip Force Control ◽  
Potential Biomarker ◽  
Neurological Conditions

Background: Alzheimer’s disease (AD) affects several cognitive functions and causes altered motor function. Fine motor deficits during object manipulation are evident in other neurological conditions, but have not been assessed in dementia patients yet. Objective: Investigate reactive and anticipatory grip force control in response to unexpected and expected load force perturbation in AD. Methods: Reactive and anticipatory grip force was investigated using a grip-device with force sensors. In this pilot study, fifteen AD patients and fourteen healthy controls performed a catching task. They held the device with one hand while a sandbag was dropped into an attached receptacle either by the experimenter or by the participant. Results: In contrast to studies of other neurological conditions, the majority of AD patients exerted lower static grip force levels than controls. Interestingly, patients who were slow in the Luria’s three-step test produced normal grip forces. The timing and magnitude of reactive grip force control were largely preserved in patients. In contrast, timing and extent of anticipatory grip forces were impaired in patients, although anticipatory control was generally preserved. These deficits were correlated with decreasing Mini-Mental State Examination scores. Apraxia scores, assessed by pantomime of tool-use, did not correlate with performance in the catching task. Conclusion: We interpreted the decreased grip force in AD in the context of loss of strength and lethargy, typical for patients with AD. The lower static grip force during object manipulation may emerge as a potential biomarker for early stages of AD, but more studies with larger sample sizes are necessary.

Deficits of predictive grip force control during object manipulation in acute stroke

2003 ◽  
Vol 250 (7) ◽  
pp. 850-860 ◽  
Author(s):  
Dennis A. Nowak ◽  
Joachim Hermsd�rfer ◽  
Helge Topka
Keyword(s):  
Acute Stroke ◽  
Force Control ◽  
Grip Force ◽  
Object Manipulation ◽  
Grip Force Control

Variable and intermittent grip force control in response to differing load force dynamics

2018 ◽  
Vol 237 (3) ◽  
pp. 687-703 ◽  
Author(s):  
Francis M. Grover ◽  
Patrick Nalepka ◽  
Paula L. Silva ◽  
Tamara Lorenz ◽  
Michael A. Riley
Keyword(s):  
Force Control ◽  
Grip Force ◽  
Load Force ◽  
Force Dynamics ◽  
Grip Force Control

Preserved and impaired aspects of predictive grip force control in cerebellar patients

2005 ◽  
Vol 116 (6) ◽  
pp. 1405-1414 ◽  
Author(s):  
Katrin Rost ◽  
Dennis A. Nowak ◽  
Dagmar Timmann ◽  
Joachim Hermsdörfer
Keyword(s):  
Force Control ◽  
Grip Force ◽  
Grip Force Control

Effects of rTMS on grip force control following subcortical stroke

2008 ◽  
Vol 211 (2) ◽  
pp. 407-412 ◽  
Author(s):  
Manuel Dafotakis ◽  
Christian Grefkes ◽  
Simon B. Eickhoff ◽  
Hans Karbe ◽  
Gereon R. Fink ◽  
...  
Keyword(s):  
Force Control ◽  
Grip Force ◽  
Grip Force Control

scholarly journals Effect of Feedback during Virtual Training of Grip Force Control with a Myoelectric Prosthesis

PLoS ONE ◽  
2014 ◽  
Vol 9 (5) ◽  
pp. e98301 ◽  
Author(s):  
Hanneke Bouwsema ◽  
Corry K. van der Sluis ◽  
Raoul M. Bongers
Keyword(s):  
Force Control ◽  
Grip Force ◽  
Virtual Training ◽  
Myoelectric Prosthesis ◽  
Grip Force Control
Sign in / Sign up

Export Citation Format

Share Document