PROBLEM TO BE SOLVED: To provide a safe, simple, and inexpensive surface type vagus nerve electrostimulation apparatus with a cardiac function monitoring device capable of providing effects similar to those of an embedded type by electrostimulation of the vagus nerve from a body surface and having a cardiac function monitoring device.SOLUTION: The vagus nerve electrostimulation apparatus for modifying the neural activity by the electrostimulation of the vagus nerve from the body surface includes: bipolar surface electrodes (1 and 1) for the vagus nerve stimulation, consisting of a positive electrode and a negative electrode for stimulating the vagus nerve (B) running along lateral rearward the left carotid artery an electrostimulator to be connected to the bipolar surface electrodes (1 and 1) for the vagus nerve stimulation a pressure sensor (2) disposed at the cervical division a cardiac rate measuring instrument (15) for measuring a cardiac rate of the common carotid artery by blood pressure information from the pressure sensor (2) a blood pressure measuring instrument (16) for measuring the blood pressure by the blood pressure information from the pressure sensor (2) and a circulatory dynamics monitoring device (17) for monitoring the cerebral circulation.
