Added option to do both spec and time series GC; debugged for when GC doesn't output anything, so it works nicely with PD_beta_epochs_GC.m, and other batch scripts.
Code for extracting short, time-stepped windows across periods of high beta power.
Code for doing GC (both spectral and time-domain) for short windows across extracted beta power.
Code for doing phase by frequency analyses on short windows across extracted beta power.