Patent ID: 11938322
Assignee: SRI INTERNATIONAL
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 4:
5. The method of claim 1, wherein classifying sleep stages further includes processing the plurality of bio-signals in combination with photoplethysmographic (PPG)-derived HR variability (HRV) measures or using motion in combination with EEG and electrooculographic (EOG) signals, and the plurality of bio-signals include beat-to-beat blood pressure, heart rate, and pre-ejection period (PEP) from impedance cardiography (ICG); and
wherein the data indicating stimulation improves EEG SWA is selected from the group consisting of:
data used to train a machine learning module;
observed responses of the user to the prior stimulation; and
a combination thereof.