Promethazine,scopolamine and cinnarizine: comparative time course of psychological performance effects |
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Authors: | A. C. Parrott K. Wesnes |
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Affiliation: | (1) Institute of Naval Medicine, PO12 2DL Gosport, Hampshire, UK;(2) Department of Psychology, University of Reading, Reading, UK;(3) Present address: Department of Psychology, North East London Polytechnic, Romford Road, E15 4LZ London, UK;(4) Cognitive Drug Research, 72-76 South Street, RG1 4HW Reading, UK |
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Abstract: | Single oral doses of promethazine (12.5 mg, 25 mg), scopolamine (0.6 mg), and cinnarizine (30 mg), were compared in a double-blind, placebo controlled trial. Twelve normal volunteers undertook a battery of psychological performance tests and a feeling state questionnaire, before drug administration, and at 2-h intervals after. Promethazine and cinnarizine significantly impaired psychomotor performance, information processing and feelings of alertness. With promethazine these reductions were maximal 3–4 h post-drug, with performance returning near to baseline 8–9 h post-drug. With cinnarizine these impairments were maximal 5–6 h post-drug, and performance remained depressed 8–9 h post-drug. Scopolamine significantly reduced feelings of alertness, and memory task performance; the overall performance effects were most evident 1–4 h post-drug. |
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Keywords: | Promethazine Scopolamine Cinnarizine Performance Reaction time Psychological assessment Alertness Feeling state Psychoactive drug |
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