Patent ID: 7292884

Claim:
An impedance based reaction performance measuring device comprising: muscle unreacted state directing means, muscle reacted state directing means, impedance measuring means, timing means, and individual system reaction time computing means, wherein the muscle unreacted state directing means gives a direction that a muscle in a specific body part is to be in an unreacted state, the muscle reacted state directing means gives a direction that the muscle in the specific body part is to be shifted into a reacted state, the impedance measuring means has an electrode set adapted to make contact with the specific body part and supplies a current to the specific body part and detects a voltage by use of the electrode set to continuously measure impedance until the reaction of the muscle in the specific body part is completed after the muscle unreacted state directing means has given the direction and after the muscle reacted state directing means has given the direction, the timing means continuously measures time after the muscle reacted state directing means has given the direction, and the individual system reaction time computing means computes the reaction time of a neurotransmission system and the reaction time of a muscle expansion/contraction system based on the impedance measured continuously by the impedance measuring means and the time measured continuously by the timing means.