Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Motor Unit Stimulation

Motor Unit Stimulation

When the neuron of a motor unit fires an action potential, it triggers a series of events, leading to a twitch contraction in the muscle fibers. The process of excitation-contraction coupling is crucial in relaying the action potential to the muscle fibers.
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Human cerebellum and ventral tegmental area interact during extinction of learned fear.

eLife·2026

Same author

Clinical telemonitoring and telerehabilitation of cognition in rare neurological diseases: a scoping review.

Journal of neurology·2026

Same author

Cerebellar Transcranial Alternating Current Stimulation in the Theta Band Prevents Recall of the Initial Fear Association After Extinction Training.

Human brain mapping·2026

Same author

A Severity-Agnostic Atrophy Pattern in Spinocerebellar Ataxia Type 3: Volumetrics from ENIGMA-Ataxia.

Movement disorders : official journal of the Movement Disorder Society·2026

Same author

Cerebellar gray matter volume changes across development: Posterolateral and vermal transient increases during adolescence.

Behavioural brain research·2026

Same author

Harmonizing the stimulation dose of focal transcranial direct current stimulation across target sites.

NeuroImage·2026

Search research articles

Related Experiment Video

Updated: Apr 19, 2026

Measurement of Spatial Stability in Precision Grip

Measurement of Spatial Stability in Precision Grip

Published on: June 4, 2020

Motor learning of cue-dependent pull-force changes during an isometric precision grip task.

Barbara C Schmid¹, Tobias Meindl¹, Dagmar Timmann²

¹Institute of Physiology, Department of Physiological Genomics, University of Munich, Pettenkoferstr. 12, 80336 Munich, Germany.

Human Movement Science

|December 8, 2014

Summary

A neutral cue can trigger changes in pull force during a precision grip task, influencing muscle activity. This suggests that learned associations can modulate motor control for precise movements.

Keywords:

Classical conditioning Cued motor task Forces Human

More Related Videos

Investigating Motor Skill Learning Processes with a Robotic Manipulandum

Investigating Motor Skill Learning Processes with a Robotic Manipulandum

Published on: February 12, 2017

Intracortical Inhibition Within the Primary Motor Cortex Can Be Modulated by Changing the Focus of Attention

Intracortical Inhibition Within the Primary Motor Cortex Can Be Modulated by Changing the Focus of Attention

Published on: September 11, 2017

Related Experiment Videos

Last Updated: Apr 19, 2026

Measurement of Spatial Stability in Precision Grip

Measurement of Spatial Stability in Precision Grip

Published on: June 4, 2020

Investigating Motor Skill Learning Processes with a Robotic Manipulandum

Investigating Motor Skill Learning Processes with a Robotic Manipulandum

Published on: February 12, 2017

Intracortical Inhibition Within the Primary Motor Cortex Can Be Modulated by Changing the Focus of Attention

Intracortical Inhibition Within the Primary Motor Cortex Can Be Modulated by Changing the Focus of Attention

Published on: September 11, 2017

Area of Science:

Neuroscience
Motor Control
Human Movement Science

Background:

The "raspberry task" involves precise grip and pull force adjustments.
Understanding how external cues influence motor control is crucial for rehabilitation and performance enhancement.

Purpose of the Study:

To investigate if a neutral cue can elicit changes in pull force during the raspberry task.
To analyze the associated changes in electromyography (EMG) activity in hand and arm muscles.

Main Methods:

A standard delay paradigm was employed to associate a neutral cue with the raspberry task.
Pull force and EMG activity were recorded from 13 healthy subjects during cued trials.
Analysis focused on the timing and nature of force and muscle activity changes post-cue.

Main Results:

A cued pull-force change was detectable in two-thirds of paired trials, occurring rapidly after cue presentation.
While some muscles showed decreased EMG activity, a significant increase in flexor carpi ulnaris activity was observed.
This antagonistic muscle activation suggests a complex, precisely controlled muscle recruitment strategy.

Conclusions:

Associated neutral cues can effectively modulate grip and pull forces in a precision task.
Cued force changes involve sophisticated, precisely controlled activation of specific muscle groups, including antagonistic muscles.
These findings highlight the brain's ability to rapidly adapt motor commands based on learned associations.