Spectral exponents of single trial stimuli are stored separately for auditory and visual stimuli, alongside estimates of r-squared.
Continuous noise stimuli for the auditory and visual domain are stored in four different cells to be cut from later. Noise time-series in each cell were generated to display spectra with exponents [0,1,2,3]. Note that these overall exponents do not perfectly match local exponents of stimuli that were cut out and presented on single trials, generating wide across trial distributions of stimulus exponents.