Automatic fitting for a visual prosthesis

摘要

The invention is a method of automatically adjusting an electrode array to the neural characteristics of an individual patient. By recording neural response to a predetermined input stimulus, one can alter that input stimulus to the needs of an individual patient. A minimum input stimulus is applied to a patient, followed by recording neural response in the vicinity of the input stimulus. By alternating stimulation and recording at gradually increasing levels, one can determine the minimum input that creates a neural response, thereby identifying the threshold stimulation level. One can further determine a maximum level by increasing stimulus until a predetermined maximum neural response is obtained.

主权项

1. A neural stimulation device comprising:
a neural stimulation driver; a stimulating electrode electrically connected to the neural stimulation driver emitting a stimulation signal; a neural recorder creating recordings; a recording electrode separate from the stimulating electrode and electrically connected to the neural recorder; a digital separator separating the recordings to remove the stimulation signal and producing separated recordings; a fitting circuit automatically adjusting the neural stimulation driver based on the separated recordings from the neural recorder.