Dictionary » F » Feedback mechanism

Feedback mechanism

Definition

noun

(1) A loop system in which the system responds to perturbation either in the same direction (positive feedback) or in the opposite direction (negative feedback).

(2) A process in which the level of one substance influences the level of another substance.

(3) A mechanism or a signal that tends to initiate (or accelerate) or to inhibit (or slow down) a process.


Supplement

An example of positive feedback loop is the onset of contractions in childbirth. When contraction begins, the hormone oxytocin is released into the body to stimulate further contractions. As for the negative feedback loop, an example is the regulation of blood glucose levels. If blood glucose levels continue to rise it may result in diabetes. In fact, there are many biologic processes that use negative feedback to maintain homeostasis or dynamic equilibrium.


See also: negative feedback, positive feedback.


Please contribute to this project, if you have more information about this term feel free to edit this page



This page was last modified 05:17, 10 September 2008. This page has been accessed 153,652 times. 
What links here | Related changes | Permanent link