:b : the activity or inhibition of previous activity of an [[organism]] or any of its parts resulting from stimulation
:b : the activity or inhibition of previous activity of an [[organism]] or any of its parts resulting from stimulation
:c : the output of a transducer or detecting device resulting from a given input
:c : the output of a transducer or detecting device resulting from a given input
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==Description==
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An antiphon ([[Greek]] ἀντίφωνον, ἀντί "opposite" + φωνή "[[voice]]") in Christian music and [[ritual]], is a "'''responsory'''" by a [[choir]] or congregation, usually in Gregorian chant, to a psalm or other [[text]] in a religious service or musical work.
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This gives rise to the general term ''antiphony'', which may be used for any call and response style of singing such as the [http://en.wikipedia.org/wiki/Kirtan kirtan] and the [http://en.wikipedia.org/wiki/Sea_shanty sea shanty]. Particularly, any piece of [[music]] performed by two semi-independent [[choirs]] in [[interaction]], often singing alternate musical phrases, is known as 'antiphonal'. Antiphonal psalmody is the singing or musical playing of [[psalms]] by alternating groups of performers.