reaction of degeneration

Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia.


1. opposite action or counteraction; the response of a part to stimulation.
2. the phenomena caused by the action of chemical agents; a chemical process in which one substance is transformed into another substance or substances.
3. in psychology, the mental or emotional state that develops in any particular situation.
4. the specific cellular effect produced by foreign matter, as in testing for allergies. For specific reactions, see under the name, such as pirquet's reaction.
reaction of degeneration the reaction to electrical stimulation of muscles whose nerves have degenerated, consisting of loss of response to a faradic stimulation in a muscle, and to galvanic and faradic stimulation in the nerve.
reaction time the time elapsing between the application of a stimulus and the resulting reaction.

re·ac·tion of de·gen·er·a·tion

(DR) (rē-ak'shŭn dĕ-jen'ĕr-ā'shŭn)
The electrical reaction in a degenerated nerve and the muscles supplied by it; characterized by absence of response to both galvanic and faradic stimulus in the nerve and to faradic stimulus in the muscles.
[Ger. Entartungs-Reaktion]

reaction of degeneration

A change in muscle reactivity to electricity, seen in lower motor neuron paralysis.