Vestibular stimulator
An apparatus for stimulating the vestibular system includes an actuator disposed to interact with the vestibular nerve and a controller for causing the actuator to interact with the vestibular nerve. The result of the interaction is that the brain receives a stationary signal.
1. An apparatus for stimulating the vestibular system, the apparatus comprising:
an actuator for interacting with a vestibular nerve on which is present a non-stationary signal; and
a controller configured to cause the actuator to apply a signal to the vestibular nerve, the signal being selected to have a pulse-repetition frequency that causes neurons in the vestibular nerve to fire synchronously relative to each other at a maximum neuron firing rate;
wherein the actuator comprises an electrode in communication with the controller, the electrode being adapted for implantation proximate to the vestibular nerve.
2. The apparatus of claim 1 , wherein the actuator further comprises a wireless receiver and the controller further comprises a wireless transmitter disposed for communication with the wireless receiver.
3. The apparatus of claim 1 , further comprising an externally actuated switch in communication with the controller for enabling external control of an interaction with the vestibular nerve.
4. The apparatus of claim 1 , further comprising a sensor adapted to detect a non-stationary signal on the vestibular nerve, the sensor being in communication with the controller for causing the controller to generate the signal in response to detection of the non-stationary signal.
5. The apparatus of claim 3 , further comprising a timer configured to disable application of the signal following lapse of a time interval.
6. The apparatus of claim 3 , further comprising a timer configured to disable application of the signal following lapse of a pre-selected time interval.
7. The apparatus of claim 3 , further comprising a timer configured to disable application of the signal following lapse of a user-selected time interval.
8. The apparatus of claim 1 , wherein the controller is configured to generate a signal selected to cause a neuron to fire at a firing rate of approximately 450 Hz.
9. The apparatus of claim 1 , wherein the controller is configured to cause a non-zero current on the order of a milliamp or less at the actuator.
10. An apparatus for alleviating symptoms of Meniere's Disease, said apparatus comprising:
means for interacting with a vestibular nerve on which is present a non-stationary signal having a time-varying spectrum, the means for interacting being configured for implantation proximate to the vestibular nerve; and
means for causing the means for interacting to apply, to the vestibular nerve, a signal having a pulse-repetition frequency that causes neurons in the vestibular nerve to fire synchronously relative to each other at a maximum neuron firing rate.
11. The apparatus of claim 10 , further comprising means for stopping application of the signal after lapse of an interval of time.
12. The apparatus of claim 10 , further comprising means for causing the means for stopping application of the signal after lapse of a pre-selected interval of time.
13. The apparatus of claim 10 , further comprising means for stopping application of the signal after lapse of a user-defined interval of time.
14. The apparatus of claim 10 , wherein the means for causing the interacting means to apply, to the vestibular nerve, a signal is configured to cause application of a pulse train having a constant pulse repetition frequency of approximately 450 Hz.