Disclosed herein are apparatus and methods for delivering bone conduction stimuli for measuring the gravitation receptor functions of the inner ear. In some embodiments, a system may include (i) an impactor operatively linked to a guide disposed within a housing and (ii) an electrically driven actuator enclosed within the housing. The electrically driven actuator may be configured to cause the impactor to (i) travel to a striking point to deliver a mechanical bone conduction stimulus for transmission to a skull bone and (ii) controllably decelerate prior to the instance of stimuli delivery. The system may also include an oculometric response monitoring system including a video camera for capturing video of motion of one or more eyes of the patient.
