PROBLEM TO BE SOLVED: To efficiently stimulate only a C fiber by an electric stimulation.SOLUTION: A pain sensory nerve stimulation apparatus includes: an electrode portion including: a first electrode 31 the tip end of which is adapted to be slightly inserted into a skin and at lease one second electrode 2 which is disposed in the circumference of the first electrode without being electrically conductive with the first electrode, and which is adapted to be in contact with the skin and a pulse signal supplier 11, supplying a pulse signal in which the electrical polarity of the first electrode 31 is set as an anode and an electrical polarity of the second electrode 32 is set as a cathode.COPYRIGHT: (C)2010,JPO&INPIT【課題】電気的刺激によってC線維のみを効率良く刺激する。【解決手段】 先端を皮膚内に僅かに刺して用いる第1電極31と、前記第1電極の周囲に導通せずに配置され、皮膚に接触させて用いる少なくとも一つ以上の第2電極2とから構成される電極部と、前記第1電極31の電気的極性を+極とし前記第2電極32の電気的極性を-極としたパルス信号を供給するパルス信号供給手段11とを具備する。【選択図】図1
