Feedback occurs when outputs of a system are routed back as inputs as part of a chain of cause-and-effect that forms a circuit or loop. The system can then be said to feed back into itself.

What is a feedback loop example?

Feedback loops are biological mechanisms whereby homeostasis is maintained. ... Some examples of positive feedback are contractions in child birth and the ripening of fruit; negative feedback examples include the regulation of blood glucose levels and osmoregulation.

What is a feedback loop in science?

A feedback loop is the part of a system in which some portion (or all) of the system's output is used as input for future operations. ... Feedback loops can be either negative or positive. Negative feedback loops are self-regulating and useful for and maintaining an optimal state within specific boundaries.