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Related Concept Videos

Transient and Steady-state Response01:24

Transient and Steady-state Response

In control systems, test signals are essential for evaluating performance under various conditions. The ramp function is effective for systems undergoing gradual changes, while the step function is suitable for assessing systems facing sudden disturbances. For systems subjected to shock inputs, the impulse function is the most appropriate test signal.
These test signals are integral in designing control systems to exhibit two key performance aspects: transient response and steady-state response.
Muscle Stimulation Frequency01:22

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Wave summation
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Motor Unit Stimulation01:20

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Action Potential: Phases of Stimulation01:28

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Related Experiment Video

Updated: Jul 6, 2026

Habituation and Prepulse Inhibition of Acoustic Startle in Rodents
08:38

Habituation and Prepulse Inhibition of Acoustic Startle in Rodents

Published on: September 1, 2011

Does startle explain the exaggerated first response to a transient perturbation?

Gunter P Siegmund1, Jean-Sébastien Blouin, J Timothy Inglis

  • 1MEA Forensic Engineers & Scientists, Richmond, British Columbia, Canada. gunter.siegmund@meaforensic.com

Exercise and Sport Sciences Reviews
|March 26, 2008
PubMed
Summary

Exaggerated muscle responses to sudden disturbances combine postural and startle reflexes. Habituation involves the startle reflex diminishing, leaving only the postural response.

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Area of Science:

  • Neuroscience
  • Human Physiology
  • Motor Control

Background:

  • Unfamiliar transient perturbations elicit complex muscle responses.
  • The interplay between postural and startle reflexes is not fully understood.

Purpose of the Study:

  • To review experimental evidence on exaggerated muscle responses.
  • To elucidate the mechanisms underlying habituation of these responses.

Main Methods:

  • Review of recent experimental data.
  • Analysis of combined postural and startle response summation.

Main Results:

  • Exaggerated muscle responses result from the summation of independent postural and startle responses.
  • Habituation is characterized by the extinction of the startle component.

Conclusions:

  • The summation model accurately explains observed muscle responses to perturbations.
  • Habituation primarily involves the suppression of the startle reflex, preserving the postural reflex.