| Positive
Feedback |
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| Positive
feedback increases the original |
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| stimulus.
It is used in certain situations to |
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| produce
a rapid buildup of response. |
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| Positive
feedback is not self-regulating. |
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| Some
external control is necessary to turn |
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| the
response mechanism off. |
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| Examples:
blood clotting, labor (birth), |
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| digestion in
the stomach. |
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