[Recording of nocturnal penile tumescence using the Rigiscan device].

Nocturnal spontaneous erections occur in healthy men being strictly correlated with paradoxal sleep phases with rapid eye movements (REM). There are simple methods of NPT recording like stamps test or erectiometers. Rigiscan-Plus device has 2 tensiometric loops and records all changes in tumescence and rigidity also as a response to visual or pharmacological stimulation. In this paper Rigiscan is presented and the role of rigidometry as an additional method in diagnostic of impotence is stressed.