The time-varying power spectrum of a time series process is a bivariate function that
quantifies the magnitude of oscillations at different frequencies and times. To obtain low …

Information from frequency bands in biomedical time series provides useful summaries of
the observed signal. Many existing methods consider summaries of the time series obtained …

I certify herewith that the dissertation included here was completed and written
independently by me and without outside assistance. References to the work and theories of …

This thesis proposes novel methods to address specific challenges in analyzing the
frequency-and time-domain properties of nonstationary time series data motivated by the …