Systems and Methods for Tracking Non-Stationary Spectral Structure and Dynamics in Physiological Data

摘要

Systems and methods for tracking dynamic structure in physiological data are provided. In some aspects, the method includes providing physiological data, including electroencephalogram (“EEG”) data, acquired from a subject and assembling a time-frequency representation of signals from the physiological data. The method also includes generating a dynamic model of at least one non-stationary spectral feature, such as at least one non-stationary spectral peak, using the time-frequency representation and a user indication, and applying a dynamic model of at least one non-stationary spectral feature in a parameter estimation algorithm to compute concurrent estimates of spectral parameters describing the at least one non-stationary spectral feature. The method also includes tracking the spectral parameters of the at least one spectral feature over time.

主权项

1. A system for tracking dynamic structure in physiological data, the system comprising:
at least one input configured to receive electroencephalography (“EEG”) data acquired from a subject; a processor configured to:
(i) receive the EEG data from the at least one input;(ii) assemble a time-frequency representation of signals from the EEG data;(iii) generate a dynamic model of at least one non-stationary spectral peak using the time-frequency representation and a user indication;(iii) apply the dynamic model in a parameter estimation algorithm to compute concurrent estimates of peak parameters describing the at least one non-stationary spectral peak, the peak parameters including a peak frequency, a peak bandwidth and a peak amplitude; and(iv) track the peak parameters of the at least one non-stationary spectral peak over time.