The relation between event-related brain potential, heart rate, and blood pressure responses in an S1-S2 paradigm.
Event-related brain potential (ERP), heart rate (HR), and blood pressure (BP) responses were examined during the 6 s foreperiod of a choice-reaction task. Low and high trait-anxious males were required to make same/different judgements based on the similarity of two successively presented visual patterns. The pitch of a warning tone, presented at the beginning of the foreperiod, indicated whether speed or accuracy was to be emphasized on that trial. In different conditions, subjects received either a monetary reward or aversive noise, depending on their performance. Two clusters of parallel variations were observed in the foreperiod: (1) speed/accuracy instructions affected the amplitude of the CNV and, in interaction with anxiety group, the initial decreases in HR and diastolic BP; (2) type of reward, in interaction with speed/accuracy instructions, affected the amplitude of the P300 and PSW, the mid-interval HR acceleration, and subsequent increases in diastolic and systolic BP. A correlational analysis showed a close relationship between changes in HR and BP, whereas no relationship was evident between changes in ERPs and changes in HR and BP.
Otten
L J
LJ
TNO Human Factors Research Institute, Soesterberg, Netherlands.
Gaillard
A W
AW
Wientjes
C J
CJ
D000328:Adult; D001007:Anxiety / Q000503:physiopathology / Q000523:psychology; D001143:Arousal / Q000502:physiology*; D001288:Attention / Q000502:physiology*; D002540:Cerebral Cortex / Q000503:physiopathology*; D003265:Contingent Negative Variation / Q000502:physiology; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D005074:Evoked Potentials, Visual / Q000502:physiology*; D006801:Humans; D008297:Male; D009042:Motivation; D010364:Pattern Recognition, Visual / Q000502:physiology; D010555:Personality Inventory; D010898:Pitch Perception / Q000502:physiology; D011930:Reaction Time / Q000502:physiology; D012016:Reference Values