Abstract: Methods and systems are described for providing deep brain stimulation (DBS) of the subcallosal cingulate region (SCC) to provide symptom relief in patients with treatment-resistant depression (TRD). The DBS devices may enable chronic electrophysiology recording to deliver SCC DBS therapy. One or more machine-learning models may identify SCC LFP changes that indicate the patient's current clinical state. The clinical state is distinct from acute transient stimulation effects, is sensitive to DBS stimulation adjustments, and accurately captures individual differences in recovery trajectory.

Abstract: The present disclosure relates to systems and methods for detecting sleep-wake activity of a subject using change-point events determined from physiological and/or movement measures. In one implementation, the method may include obtaining at least one set of sensor data generated by one or more sensors for a period of time. The method may also include generating at least two measures from the at least one set of sensor data. The method may further include determining a series of change point events for each measure for the period of time. The method may include determining a sleep stage for each interval of the period of time from at least two sleep stages by processing the series of change point events for each measure using a sleep stage classifier. The sleep stage classifier may include a set of parameters for each measure.

Abstract: The disclosed technology includes devices and methods for a wearable cardiac monitoring system to determine morphological variability and localization of the wearable cardiac monitoring system. The disclosed technology can include receiving seismocardiographic data, determining a classifier of the seismocardiographic data, determining a signal quality index of the seismocardiographic data, determining a quality of the seismocardiographic data based on the classifier and the signal quality index, and outputting an indication of the quality of the seismocardiographic data to a graphical user interface.