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A comparison of the psychometric effects of remoxipride with those of haloperidol, thioridazine, and lorazepam in healthy volunteers

✍ Scribed by I. Hindmarch; B. Tiplady

Publisher: John Wiley and Sons
Year: 1994
Tongue: English
Weight: 536 KB
Volume: 9
Category: Article
ISSN: 0885-6222
DOI: 10.1002/hup.470090106

No coin nor oath required. For personal study only.

✦ Synopsis

In this placebo and verum (lorazepam 2 mg) controlled double-blind crossover study the acute effects of Remoxipride 50 mg and 100 mg; Haloperidol 2-5 mg; and Thioridazine 50 mg were examined in 18 healthy volunteers. CNS function was assessed using a battery of psychometric measures, viz: Critical Flicker Fusion Threshold (CFFT); Choice Reaction Time (CRT); Tracking Accuracy (RMS) and Peripheral Reaction Time (PRT); Sternberg Memory Scanning (SMS); Word Memory (WM) as well as Line Analogue Ratings of subjective sedation (LARS) and the Leeds Sleep Evaluation Questionnaire (LSEQ). Both doses of remoxipride were associated with a reduction of CFFT: 0.9 Hz for 50 mg and 1.3 Hz for 100 mg. The 100 mg dose caused an increase (impairment) in CRT total time of 38 msec. Haloperidol reduced CFFT, while thioridazine and lorazepam impaired performance on the majority of objective measures, as expected for known sedative drugs. Thioridazine led to hypotension in three subjects, and to subjective sedation (LARS), but no treatment affected responses on the LSEQ administered the morning of the day following treatment. These results show that remoxipride has some depressant effects on CNS function, but that these are less prominent than those of sedative neuroleptics such as thioridazine.

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