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Related Concept Videos

Positive and Negative Feedback Loops01:18

Positive and Negative Feedback Loops

Animal organs and organ systems constantly adjust to internal and external changes through a process called homeostasis ("steady state"). Examples of these changes include regulation of the level of glucose or calcium in the blood or internal responses to external temperatures. Homeostasis requires  maintaining an internal dynamic equilibrium:
What is Homeostasis?01:16

What is Homeostasis?

Maintaining homeostasis requires that the body continuously maintain its internal conditions. Each physiological condition has a particular set point, from body temperature to blood pressure to levels of certain nutrients. A set point is the physiological value around which the normal range fluctuates. A normal range is a restricted set of values that is optimally healthful and stable. For example, the set point for normal human body temperature is approximately 37°C (98.6°F). Physiological...
Homeostatic Imbalance01:10

Homeostatic Imbalance

Homeostasis is the maintenance of a stable internal environment within the body, which is crucial for the proper functioning of cells, tissues, organs, and organ systems. The body has various control mechanisms that work together to regulate various physiological parameters such as temperature, blood pressure, pH balance, and fluid balance, to name a few. These control mechanisms are based on feedback loops that can be either positive or negative.
However, sometimes these feedback loops fail,...
Effects of feedback01:24

Effects of feedback

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.
Feedback significantly modifies the gain of a control system. The gain of a system without feedback is altered by a factor of one plus GH, where G represents...
Feedback control systems01:26

Feedback control systems

Feedback control systems are categorized in various ways based on their design, analysis, and signal types.
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
Feedback Loops01:01

Feedback Loops

In most cases, excessive hormone production is prevented by negative feedback—a loop that starts with a stimulus inducing the release of a particular substance, like a hormone, to maintain a certain level before triggering a signal that results in a decrease in further release of the hormone.

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Related Experiment Video

Updated: Jun 4, 2026

Psychophysiological Stress Assessment Using Biofeedback
10:16

Psychophysiological Stress Assessment Using Biofeedback

Published on: July 31, 2009

Homeostasis and biofeedback.

J Kryspin, C M Godfrey

    Canadian Family Physician Medecin De Famille Canadien
    |February 10, 2011
    PubMed
    Summary
    This summary is machine-generated.

    Biofeedback enhances awareness of bodily homeostasis, helping individuals learn self-regulation for improved health. This technique aids in managing chronic disorders by promoting a return to stable physiological conditions.

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    Area of Science:

    • Physiology
    • Health Sciences
    • Behavioral Medicine

    Background:

    • Homeostasis is the body's maintenance of stable internal conditions.
    • Deviations from homeostasis are associated with disease.
    • Biofeedback offers a method to monitor and influence physiological processes.

    Purpose of the Study:

    • To explore the concept of biofeedback as a tool for enhancing homeostasis.
    • To investigate the potential of biofeedback in managing chronic disorders.
    • To illustrate the clinical applications, successes, and limitations of biofeedback therapy.

    Main Methods:

    • Utilizing physiological information channels as biofeedback signals.
    • Educating subjects on recognizing homeostatic imbalances.
    • Teaching self-regulation techniques to restore homeostasis.

    Main Results:

    • Biofeedback can increase awareness of inadequate physiological control.
    • Subjects can learn new mechanisms to achieve better homeostasis.
    • Clinical applications show both successes and limitations in chronic disorder management.

    Conclusions:

    • Biofeedback is a viable approach for promoting health by enhancing homeostatic control.
    • Further research is needed to fully understand its efficacy and limitations across various chronic conditions.
    • Biofeedback empowers individuals to actively participate in managing their health status.