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Sleep stage detection

  • US 9,072,870 B2
  • Filed: 09/25/2008
  • Issued: 07/07/2015
  • Est. Priority Date: 01/25/2008
  • Status: Active Grant
First Claim
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1. A method comprising, with one or more processors:

  • receiving a biosignal that is indicative of activity within a brain of a patient;

    determining a frequency characteristic of the biosignal;

    determining a sleep stage of the patient based on the frequency characteristic of the biosignal, wherein the sleep stage occurs during a sleep state of the patient, the sleep state comprising a plurality of sleep stages; and

    controlling a therapy module configured to be implanted in the patient to deliver deep brain electrical stimulation therapy to the brain of the patient during the sleep state based on the determined sleep stage, wherein controlling the therapy module to deliver deep brain electrical stimulation therapy comprises, in response to detecting a Stage 1 sleep stage, controlling the therapy module to deliver deep brain electrical stimulation therapy that improves performance of motor tasks by the patient relative to a patient state in which the patient is not receiving the deep brain electrical stimulation therapy, the motor tasks including initiating or maintaining movement.

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