PROBLEM TO BE SOLVED: To early detect effect of vagus nerve stimulation to cure ventricular tachycardia during an early stage.SOLUTION: There is provided a nerve stimulation device 1 comprising: a nerve stimulation unit 6 for outputting a stimulation signal to a vagus nerve a biological signal detection unit 2 for detecting a biological signal and a stimulation effect determination unit 4 for determining effect of the vagus nerve stimulation by the nerve stimulation unit 6, depending on whether or not a variation of the biological signals detected by the biological signal detection unit 2 before and after the output of the stimulation signals by the nerve stimulation unit 6 exceeds a predetermined threshold.COPYRIGHT: (C)2015,JPO&INPIT【課題】迷走神経刺激の効果を早期に検出して心室頻拍を早期に治療する。【解決手段】迷走神経に対して刺激信号を出力する神経刺激部6と、生体信号を検出する生体信号検出部2と、神経刺激部6による刺激信号の出力前後に、生体信号検出部2により検出された生体信号の変化量が所定の閾値を超えたか否かによって、神経刺激部6による迷走神経刺激の効果を判定する刺激効果判定部4とを備える神経刺激装置1を提供する。【選択図】図1