Dynamic pupillary light reflex (PLR) is a simple neurological test that can be useful for assessment of autonomic disorders. In this study, we investigated the changes in PLR induced by mental arithmetic task and cold pressor trials which are often applied in research as model systems to elicit autonomic responses. PLR was recorded before, during and after mental arithmetic and cold pressor tasks in 20 healthy adults (ten males and ten females). Stress-induced sympathetic activation was evident as shown in the increased blood pressure during both tasks. Although the pupillary constriction amplitude did not show significant changes, both constriction time and redilation time changed during the tasks. A significant gender effect was observed in cold pressor that suggested more sympathetic activation in males and faster parasympathetic activation in females in response to light stimulation under cold pressor.
机构:
Univ Nottingham, Queens Med Ctr, Div Psychiat, Nottingham NG7 2UH, EnglandUniv Nottingham, Queens Med Ctr, Div Psychiat, Nottingham NG7 2UH, England
Bitsios, P
Szabadi, E
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Univ Nottingham, Queens Med Ctr, Div Psychiat, Nottingham NG7 2UH, EnglandUniv Nottingham, Queens Med Ctr, Div Psychiat, Nottingham NG7 2UH, England
Szabadi, E
Bradshaw, CM
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Univ Nottingham, Queens Med Ctr, Div Psychiat, Nottingham NG7 2UH, EnglandUniv Nottingham, Queens Med Ctr, Div Psychiat, Nottingham NG7 2UH, England
机构:
Univ Nottingham, Queens Med Ctr, Div Psychiat, Nottingham NG7 2UH, EnglandUniv Nottingham, Queens Med Ctr, Div Psychiat, Nottingham NG7 2UH, England
Bitsios, P
Szabadi, E
论文数: 0引用数: 0
h-index: 0
机构:
Univ Nottingham, Queens Med Ctr, Div Psychiat, Nottingham NG7 2UH, EnglandUniv Nottingham, Queens Med Ctr, Div Psychiat, Nottingham NG7 2UH, England
Szabadi, E
Bradshaw, CM
论文数: 0引用数: 0
h-index: 0
机构:
Univ Nottingham, Queens Med Ctr, Div Psychiat, Nottingham NG7 2UH, EnglandUniv Nottingham, Queens Med Ctr, Div Psychiat, Nottingham NG7 2UH, England