Encoding fine time structure in presence of substantial interaction across an electrode array
First Claim
1. A cochlear stimulation system comprising:
- a processor configured to generate one or more control signals based on a customized stimulation pattern in a cochlear implant implanted in an individual; and
circuitry coupled to the processor, the circuitry configured to apply one or more stimulation currents to one or more selected electrodes of an electrode array associated with the cochlear implant based on the generated one or more control signals;
wherein the customized stimulation pattern is determined based on a test that identifies independence of the one or more selected electrodes, andwherein the processor and the circuitry are further configured to conduct the test by performing operations that comprises;
determining an excitation pattern for at least a first electrode and a second electrode selected from the array of electrodes by applying a masking stimulus and a probing stimulus separated by a time delay to each electrode, and determining an ability of the individual to distinguish the masking and probing stimuli; and
comparing the excitation pattern for the first electrode against the excitation pattern for the second electrode.
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Abstract
Among other things, a stimulation strategy can be customized for a cochlear implant implanted in an individual by testing at least a pair of electrodes selected from an array of electrodes associated with the cochlear implant. Testing the at least a pair of electrodes includes applying a first stimulation to the at least a pair of electrodes using a first pair of pulse trains that are out of phase, and applying a second stimulation to the at least a pair of electrodes using a second pair of pulse trains that are out of phase. A determination is made on whether the at least a pair of electrodes stimulate the same neural population based on a sensitivity of the individual to detect a perceived difference between the two pairs of pulse trains. The one or more electrodes of the array of electrodes are selectively stimulated based on the determination.
45 Citations
18 Claims
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1. A cochlear stimulation system comprising:
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a processor configured to generate one or more control signals based on a customized stimulation pattern in a cochlear implant implanted in an individual; and circuitry coupled to the processor, the circuitry configured to apply one or more stimulation currents to one or more selected electrodes of an electrode array associated with the cochlear implant based on the generated one or more control signals; wherein the customized stimulation pattern is determined based on a test that identifies independence of the one or more selected electrodes, and wherein the processor and the circuitry are further configured to conduct the test by performing operations that comprises; determining an excitation pattern for at least a first electrode and a second electrode selected from the array of electrodes by applying a masking stimulus and a probing stimulus separated by a time delay to each electrode, and determining an ability of the individual to distinguish the masking and probing stimuli; and comparing the excitation pattern for the first electrode against the excitation pattern for the second electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for customizing a stimulation strategy in a cochlear implant implanted in an individual comprising:
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determining an excitation pattern for at least a first electrode and a second electrode selected from an array of electrodes associated with the cochlear implant, wherein the determining comprises applying a masking stimulus and a probing stimulus separated by a time delay to each electrode, and determining an ability of the individual to distinguish the masking and probing stimuli; and comparing the excitation pattern for the first electrode against the excitation pattern for the second electrode. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A non-transitory computer-readable medium on which are stored instructions comprising instructions that when executed cause a programmable device to customize a stimulation strategy in a cochlear implant implanted in an individual by performing operations comprising:
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determining an excitation pattern for at least a first electrode and a second electrode selected from an array of electrodes associated with the cochlear implant, wherein the determining comprises; applying a masking stimulus and a probing stimulus separated by a time delay to each electrode, and determining an ability of the individual to distinguish the masking and probing stimuli; comparing the excitation pattern for the first electrode against the excitation pattern for the second electrode; and selectively stimulating one or more electrodes of the array of electrodes based on the comparison. - View Dependent Claims (15, 16, 17, 18)
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Specification