Bias-probe rotation test of vestibular function
First Claim
1. A system comprising:
- an eye velocity computing unit arranged such that the eye velocity computing unit operatively computes eye velocity from eye position data from a subject as a result of applying a stimulus to control rotational motion of the subject to affect vestibular responses of the subject, the stimulus having a bias component and a probe component such that vestibular responses in one ear of the subject are temporarily turned off during application of the bias component with the probe component modulating the bias component to evaluate responsiveness in another ear of the subject; and
a filter arranged such that the filter operatively isolates and separates a bias response to the bias component of the stimulus from a probe response to the probe component of the stimulus to analyze separately the bias response and the probe response.
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Accused Products
Abstract
Apparatus and methods for rotation test stimulus and analysis methods overcome many of the limitations of traditional clinical tests of peripheral vestibular function. An embodiment includes a rotational stimuli applied to the rotational motion for testing that includes two separate components, a bias component and a probe component. The bias component for rotational motion is designed to temporarily turn off vestibular responses in one ear while the responsiveness in the opposite ear is simultaneously evaluated using the probe component of the stimulus. Responses from application of these stimuli are analyzed by isolating and separating the bias response from the probe response. The bias and probe component responses are parameterized by applying curve fits of mathematical functions to the isolated bias and probe component responses. These parameters characterize the patient'"'"'s vestibular function.
26 Citations
9 Claims
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1. A system comprising:
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an eye velocity computing unit arranged such that the eye velocity computing unit operatively computes eye velocity from eye position data from a subject as a result of applying a stimulus to control rotational motion of the subject to affect vestibular responses of the subject, the stimulus having a bias component and a probe component such that vestibular responses in one ear of the subject are temporarily turned off during application of the bias component with the probe component modulating the bias component to evaluate responsiveness in another ear of the subject; and a filter arranged such that the filter operatively isolates and separates a bias response to the bias component of the stimulus from a probe response to the probe component of the stimulus to analyze separately the bias response and the probe response. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification