feedback mechanism


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feed·back in·hi·bi·tion

(fēd'bak in'hi-bish'ŭn)
Inhibition of activity by an end product of the pathway of which that activity is a part.
Synonym(s): feedback mechanism.
Feedback mechanismclick for a larger image
Fig. 159 Feedback mechanism . Excess production of X causes a shutdown of the process by inhibition of the first step from A to B.

feedback mechanism

a mechanism by which the products of a process can act as regulators of that process. Many biochemical processes are controlled by negative feedback mechanisms. See Fig. 159 . Mammals utilize negative feedback mechanisms to maintain HOMEOSTASIS in several systems, for example blood thyroxine levels, body temperature, blood osmotic pressure. Occasionally positive feedback occurs, which is a disruptive process where products of a process cause further ACTIVATION; for example, excess core heat in mammals will in turn encourage a higher metabolic rate which produces yet more heat and eventually death.
References in periodicals archive ?
The fuzzy feedback mechanism (Figure 3) consists of a fuzzifier, a knowledge base, a fuzzy inference engine and a defuzzifier.
The system includes a feedback mechanism through e-mail notification of receipt.
providing a feedback mechanism to Izodia on business and technology issues.
The Interactive Policy-Making initiative involves the development of two Internet-based mechanisms:- A feedback mechanism which helps to collect spontaneous reactions in the marketplace, using existing networks and contact points as intermediaries, in order to obtain continuous access to the opinions and experiences of businesses, traders and EU citizens;- A consultation mechanism which will allow the more rapid and structured collection of stakeholders' reactions to new initiatives.
Prices in a perfectly competitive market act as a feedback mechanism to market participants.
By providing our development team with round-the-clock access to technical information and a real-time feedback mechanism to minimize errors and delays, ActiveProject's ability to accelerate our product delivery time has exceeded our expectations.
A feedback mechanism adjusts the platform rotation to match the pendulum's motion, and the scientists measure the platform speed.
The REGYS I system has a unique feedback mechanism that senses muscle fatigue or spasms, according to center staff.
The practice of using Berven's criterion group as performance standards to compute the PI and EI scores as a feedback mechanism for trainees must be employed with greater caution.
In particular, the 500 mA NCP3335A LDO can sustain inputs voltages up to 16 V and employs a special voltage reference and feedback mechanism that offers extremely tight output accuracies over operating conditions of load, line and temperature.
Through the DFA's new feedback mechanism, the passport applicant is being notified through email on the status of his or her application, whether there were discrepancies in the application even right before he or she goes back to the DFA office to pick up the passport.