Physiology
Researchers have found a number of physiological mechanisms associated with OR, including changes in phasic and tonic skin conductance response (SCR), electroencephalogram (EEG), and heart rate following an novel or significant stimulus. These observations all occur within seconds of stimulus introduction. In particular, EEG studies of OR have corresponded particularly with the P300 wave and P3a component of the OR-related event related potential (ERP).
Read more about this topic: Orienting Response
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