1. A neural monitoring device, comprising: a stimulator configured to provide a stimulus within an intracorporeal treatment area of a subject; a non-invasive mechanical sensor configured to: be placed in contact with an external skin surface of the subject and in direct mechanical communication with a muscle of the subject; and generate an output signal corresponding to a sensed mechanical response of the muscle; and a processor configured to receive the output signal from the mechanical sensor; provide a first indicator if the sensed mechanical response is attributable to a depolarization of a nerve that is caused by the provided stimulus; and provide a second indicator if the sensed mechanical response is not attributable to the provided stimulus.