tonus

n. a continuous, slight stretching tension or contraction in muscles when they are at rest. For example, the jaw muscles exhibit tonus when not used for eating or talking. Tonus serves to keep the muscles ready for action. See also tonic.

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Psychology term of the day

November 18th 2024

critical region

a range of values that may be obtained from a statistical procedure that would lead to rejecting a specific claim about a population. More specifically, it is the portion of a probability distribution containing the values for a test statistic that would result in rejection of a null hypothesis in favor of its corresponding alternative hypothesis. Also called rejection region. Compare acceptance region.