[Effect of phenazepam on psychophysiological reactions]

After intensive psychophysical sports exercise phenazepam given to 18 male athletes at a dose of 0.0005 g reduced the latent period of ordinary motor reactions to the sound and improved visual-motor coordination as judged from the test of reacting to the moving object, and also slightly increased the critical frequency of light flickering confluence and time of digital recognition. At a dose of 0.002 g phenazepam led to contrary changes in the parameters cited. No residual action was recorded in the morning after phenazepam administration overnight as a hypnotic agent at a dose of 0.002 g.