Exogenous

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Exogenous (or exogeneous) (from the Greek words "exo" and "gen", meaning "outside" and "production") refers to an action or object coming from outside a system. It is the opposite of endogenous, something generated from within the system.

  • In biology, "exogenous" refers to an action or object coming from the outside of a system. For example, an exogenous contrast agent in medical imaging refers to a liquid injected into the patient intravenously that enhances visibility of a pathology, such as a tumor.

References

Posner, M.I. (1980), Orienting of attention. Quarterly Journal of Experimental Psychology, 32: 3 – 25.



cs:Exogenní nn:Eksogen sr:Егзогено


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