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Related Experiment Video

Updated: Jun 25, 2026

The 5-Choice Serial Reaction Time Task: A Task of Attention and Impulse Control for Rodents
09:43

The 5-Choice Serial Reaction Time Task: A Task of Attention and Impulse Control for Rodents

Published on: August 10, 2014

Task performance is prioritized over energy reduction.

Ravi Balasubramanian1, Robert D Howe, Yoky Matsuoka

  • 1Department of Computer Science and Engineering, University of Washington, Seattle, WA 351700, USA. bravi@cs.washington.edu

IEEE Transactions on Bio-Medical Engineering
|March 11, 2009
PubMed
Summary
This summary is machine-generated.

For brief contact tasks, adapting to high accuracy demands increases hand stiffness and energy use, prioritizing performance over efficiency. More trials are needed to find low-energy strategies compared to continuous feedback tasks.

Related Experiment Videos

Last Updated: Jun 25, 2026

The 5-Choice Serial Reaction Time Task: A Task of Attention and Impulse Control for Rodents
09:43

The 5-Choice Serial Reaction Time Task: A Task of Attention and Impulse Control for Rodents

Published on: August 10, 2014

Area of Science:

  • Motor control
  • Human-robot interaction
  • Robotics

Background:

  • Adapting to new tasks involves changes in motor control strategies.
  • Understanding hand impedance is crucial for precise human-robot interaction.
  • Brief contact tasks present unique challenges for motor adaptation.

Purpose of the Study:

  • To investigate the relationship between hand stiffness and task performance during adaptation to a brief contact task.
  • To characterize how accuracy requirements influence motor strategies in precision tasks.
  • To explore the trade-off between energy reduction and task performance.

Main Methods:

  • Subjects controlled a virtual paddle using a robotic handle to intercept a virtual ball.
  • Hand impedance was estimated using force transients after ball-paddle impact.
  • Accuracy requirements were manipulated by altering visual feedback gain.

Main Results:

  • Brief contact tasks required more trials for low-energy strategy adaptation compared to continuous feedback tasks.
  • Increased accuracy demands led to higher peak hand stiffness and later onset.
  • Viscoelastic forces increased during adaptation for brief contact tasks before energy reduction.

Conclusions:

  • Task performance, particularly accuracy, may be prioritized over energy reduction in brief contact tasks.
  • Motor adaptation strategies adjust hand stiffness to meet task demands.
  • Findings offer insights into optimizing human-robot system design for precision tasks.