Method and device for detecting a neural response in a neural measurement
AssigneeSaluda Medical Pty Ltd
InventorsPeter Scott Vallack SINGLE, Dean Michael KARANTONIS
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Abstract
A method for processing a neural measurement obtained in the presence of artifact, in order to detect whether a neural response is present in the neural measurement. A neural measurement is obtained from one or more sense electrodes. The neural measurement is correlated against a filter template, the filter template comprising at least three half cycles of an alternating waveform, amplitude modulated by a window. From an output of the correlating, it is determined whether a neural response is present in the neural measurement.
Claims17
A method for processing a neural measurement in order to determine a magnitude of a neural response in the neural measurement, the method comprising:
- applying a first electrical stimulus to neural tissue of a patient, the first electrical stimulus defined by at least one stimulus parameter;
- obtaining a neural measurement from one or more sense electrodes subsequent to the first electrical stimulus;
- determining, based on the neural measurement, a time delay of a window to be applied to a subsequent neural measurement;
- applying a window at the determined time delay to the subsequent neural measurement to produce a windowed neural measurement;
- and
- determining from the windowed neural measurement a magnitude of a neural response evoked by an electrical stimulus in the subsequent neural measurement.
An implantable device for processing a neural measurement in order to determine a magnitude of a neural response in the neural measurement, the device comprising:
- an electrical stimulus source configured to generate a first electrical stimulus to be applied to neural tissue, the first electrical stimulus defined by at least one stimulus parameter;
- measurement circuitry for obtaining a neural measurement from one or more sense electrodes subsequent to the first electrical stimulus;
- and
- a processor configured to:
- determine, based on the neural measurement, a time delay of a window to be applied to a subsequent neural measurement;
- apply a window at the determined time delay to the subsequent neural measurement to produce a windowed neural measurement;
- and
- determine from the windowed neural measurement a magnitude of a neural response evoked by an electrical stimulus in the subsequent neural measurement.
Dependencies are inferred from the claim text.