title: Temporal coherence and attention in auditory scene analysis.
abstract: Humans and other animals can attend to one of multiple sounds and follow it selectively over time. The neural underpinnings of this perceptual feat remain mysterious. Some studies have concluded that sounds are heard as separate streams when they activate well-separated populations of central auditory neurons, and that this process is largely pre-attentive. Here, we argue instead that stream formation depends primarily on temporal coherence between responses that encode various features of a sound source. Furthermore, we postulate that only when attention is directed towards a particular feature (e.g. pitch) do all other temporally coherent features of that source (e.g. timbre and location) become bound together as a stream that is segregated from the incoherent features of other sources.
authors.affiliation: Department of Electrical and Computer Engineering and Institute for Systems Research, University of Maryland, College Park, MD 20742, USA. sas@umd.edu
authors.forename: Shihab A
authors.initials: SA
authors.lastname: Shamma
authors.forename: Mounya
authors.initials: M
authors.lastname: Elhilali
authors.forename: Christophe
authors.initials: C
authors.lastname: Micheyl
mesh_terms: D000818:Animals; D001288:Attention / Q000502:physiology*; D001303:Auditory Cortex / Q000502:physiology*; D001307:Auditory Perception / Q000502:physiology*; D006801:Humans; D013997:Time Factors