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Heart rate variability in acute psychosis
Author(s) -
ValkonenKorhonen Minna,
Tarvainen Mika P.,
RantaAho Perttu,
Karjalainen Pasi A.,
Partanen Juhani,
Karhu Jari,
Lehtonen Johannes
Publication year - 2003
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/1469-8986.00072
Subject(s) - heart rate variability , psychosis , psychology , autonomic nervous system , heart rate , wisconsin card sorting test , acute psychosis , qrs complex , cardiology , audiology , medicine , neuroscience , psychiatry , cognition , neuropsychology , blood pressure
Heart rate variability (HRV) provides reliable tools to assess the integrity and reactivity of autonomic nervous function. Our aim was to examine HRV in the resting condition and during different mental loads in acute psychosis compared to healthy controls. HRV was measured in 17 first‐episode drug‐naive patients with psychosis and 21 healthy controls during oddball tasks and while performing the Wisconsin Card Sorting Test. A discrete event series was constructed by an adaptive QRS detector algorithm and power spectrum estimation was carried out. The RMSSD (representing interval differences of successive heartbeats) and the amount of high frequency (HF) power were significantly reduced in patients. Moreover, the patients' HRV remained unaltered during the tasks, whereas in controls the HRV diminished with increasing mental load of the task. Patients with psychosis displayed less short‐term HR reactivity than healthy controls. They also failed to adapt HRV according to the task‐connected strain. Acute psychosis is characterized by a limited capacity to respond to external demands at the level of autonomic nervous system.