COMPUTERIZED PSYCHOMOTOR PERFORMANCE TESTING - A COMPARATIVE-STUDY OF THE SINGLE-DOSE PHARMACODYNAMICS OF MINAPRINE AND AMITRIPTYLINE IN YOUNG AND ELDERLY SUBJECTS

The psychomotor and cardiovascular effects of minaprine 100 mg, a novel antidepressant, were compared with amitriptyline 25 mg, as a positive control, and placebo in a single dose randomised double-blind crossover trial using an automated psychomotor test battery (APT), postural sway (PS), blood pressure (BP) and pulse in nine young and nine elderly healthy subjects. Analysis of variance, taking into account baseline values, showed that continuous attention test (CAT), critical flicker fusion threshold (CFFT), decision making test (DMT) and paired word association (PWA) were significantly impaired with amitriptyline compared with minaprine and placebo. Minaprine did not differ from placebo. Amitriptyline significantly lowered supine systolic blood pressure (BP) and all treatments produced significant decreases in heart rate in young and elderly. No age effect on psychomotor performance was seen. Minaprine compared favourably with amitriptyline using the APT with the doses used. The APT is useful in the evaluation of new drugs on psychomotor performance.