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Related Concept Videos

Effects of feedback01:24

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Feedback in control systems plays a critical role in shaping various operational parameters, extending beyond simple error reduction to influence stability, bandwidth, gain, impedance, and sensitivity. Understanding these effects requires examining a basic feedback system characterized by defined input, output, error, and feedback signals.
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Feedback control systems01:26

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Feedback control systems are categorized in various ways based on their design, analysis, and signal types.
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Control systems are everywhere in contemporary society, influencing diverse applications from aerospace to automated manufacturing. These systems can be found naturally within biological processes, such as blood sugar regulation and heart rate adjustment in response to stress, as well as in man-made systems like elevators and automated vehicles. A control system is essentially a network of subsystems and processes that collaboratively convert specific inputs into desired outputs.
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Controller configurations are crucial in a car's cruise control system because they manage speed over time to maintain a consistent pace regardless of road conditions, thereby meeting design goals. In traditional control systems, fixed-configuration design involves predetermined controller placement. System performance modifications are known as compensation.
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Related Experiment Video

Updated: Dec 26, 2025

Force and Position Control in Humans - The Role of Augmented Feedback
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Functional heterogeneity of perceived control in feedback processing.

Ya Zheng1, Mengyao Wang1, Shiyu Zhou1

  • 1Department of Psychology, Dalian Medical University, Dalian 116044, China.

Social Cognitive and Affective Neuroscience
|March 13, 2020
PubMed
Summary
This summary is machine-generated.

Perceived control enhances positive feedback processing and increases brain activity for negative feedback. This suggests perceived control influences reward signals and motivational salience, regardless of outcome valence.

Keywords:
EEGfeedback valencefunctional heterogeneityperceived control

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Affective Science

Background:

  • Perceived control is a key psychological function influencing emotional states.
  • Understanding the neural basis of perceived control in feedback processing is crucial.

Purpose of the Study:

  • To investigate the electrophysiological correlates of perceived control during feedback valence processing.
  • To examine how choice influences the brain's response to positive and negative feedback.

Main Methods:

  • Electroencephalography (EEG) was used in a choice task with 36 participants.
  • Participants received positive or negative feedback after making choices or having them made by a computer.

Main Results:

  • Perceived control enhanced reward positivity for positive feedback and increased theta power for negative feedback.
  • Perceived control also increased feedback P3 amplitude and delta power irrespective of feedback valence.

Conclusions:

  • Perceived control exhibits functional heterogeneity in feedback processing.
  • It magnifies reward signals, enhances the need for control, and increases motivational salience of outcomes.