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The endogenous eyeblink is identified as a cortically controlled response event, distinguishable from both reflexive and voluntary lid movements. It has a characteristic rate, form, and temporal distribution. These aspects of endogenous blinks are related to cognitive state variables. Allocation of attentional resources, transition points in information processing flow, and possibly processing mode, are indexed by blink parameters.
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Stern et al. (1984) studied this question.
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