Abstract: Extensive neurophysiolorcal investigations were caried out in 69 healthy male subjects.THe test consisted of cortical pudendal and spinal pudendal evoked potentials (SEPs)to stimulation of dorsal nerve of penis,cortical and spinal motor evoked potentials(MEPs) form the bulbocavernosus muscles (BC) in response to scalp and sacral root stimulation,the measurement of sacral reflex latency (SRL) form anal sphincter. The mean sensory total conduction time as measured at the peak of scalp P1 wave was 39.18± 1.92 ms.The mean sensory prepheral conduction time was 9.98±1.30 ms.The mean sensory cen- tral conduction time was 29.66±2.32 ms. Transcranial brain stimulation was performed by using a magnetic stimulator during voluntary conduction of the examed muscles.Motor total conduction time to anal sphincter muscles was 20.34 ±2.28 ms.Motor prepheral conduction time was 6.03±1.40 ms.Motor central conduction time was 14.31±2.68 ms.The mean latency of SRL was 35.15±3.58 ms. Combined or isolated abnormalities of SEPs,MEPs and SRL were found in some patients with impotence.