Dictionary » O » Overshoots



1. Generally, any initial change, in response to a sudden step change in some factor, that is greater than the steady-state response to the new level of that factor; common in systems in which inertia or a time lag in negative feedback outweighs any damping that may be present. Changes in a negative direction are sometimes distinguished by the term undershoot, and the two may alternate in an oscillatory fashion, as in the transient oscillations of a pendulum when released from an initial displacement.

2. Momentary reversal of the membrane potential of a cell (inside becoming positive rather than negative relative to the outside) during an action potential; considered a form of overshoot because, before discovery of overshoot, excitation was thought merely to depolarise the membrane to zero transmembrane potential.

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

Results from our forum


... your BP recovers and you don't pass out every time you stand up. It is a neat little process: Stand up, BP drops, HR increases slightly, BP then overshoots a little, HR adjusts to accomodate the overshoot, then there is a little ripple dance between the two as they balance out to normal operational ...

See entire post
by ERS
Mon Jan 23, 2006 12:45 am
Forum: Human Biology
Topic: dizzines
Replies: 7
Views: 4847

This page was last modified 21:16, 3 October 2005. This page has been accessed 3,639 times. 
What links here | Related changes | Permanent link