Described is a method and system for training medical professionals to perform a nerve block procedure. The system may include a nerve electrode at least partially inserted in a conductive gel and an NSMRD supplying a current signal to a needle which is inserted in the gel. The system may also include a processing arrangement which is connected to the NSMRD. The processing arrangement receives a transmitted current from the nerve electrode via the needle and measures a voltage drop. The measured voltage drop increases as a distance between the needle and the nerve electrode decreases.