FMRI and MEG evidence of overlapping generators in auditory cortex for streaming based on spatial and spectral cues

When analyzing complex acoustic scenes, the brain continuously groups related sounds and segregates others to form coherent perceptual streams. Neural mechanisms of streaming have been proposed based on spectral differences, and more recently also relying on f0 differences with unresolved spectral fine structure. These data suggest that feature-specific forward suppression is subserving streaming based on a variety of perceptual cues, and results in explicit neural representations of auditory streams within auditory cortex. Using functional magnetic resonance imaging (fMRI) and magnetoencephalography (MEG), the…