- positive discrimination,
- positive electricity,
- positive electron,
- positive end-expiratory pressure,
- positive eugenics,
- positive ion,
- positive law,
- positive organ,
- positive polarity,
- positive ray
- the process of returning part of the output of a circuit, system, or device to the input, either to oppose the input (negative feedback) or to aid the input (positive feedback).
- acoustic feedback.
Origin of feedback
- the return of part of the output of an electronic circuit, device, or mechanical system to its input, so modifying its characteristics. In negative feedback a rise in output energy reduces the input energy; in positive feedback an increase in output energy reinforces the input energy
- that part of the output signal fed back into the input
- the effect of the product of a biological pathway on the rate of an earlier step in that pathway
- the substance or reaction causing such an effect, such as the release of a hormone in a biochemical pathway
verb, adverb feed back
A process in which a system regulates itself by monitoring its own output. That is, it “feeds back” part of its output to itself. Feedback is used to control machines; a heating system, for example, uses a thermostat to monitor and adjust its output. Feedback is also used by the human brain to control various muscles and joints.