title: The role of auditory cortex in the formation of auditory streams.
abstract: Auditory streaming refers to the perceptual parsing of acoustic sequences into "streams", which makes it possible for a listener to follow the sounds from a given source amidst other sounds. Streaming is currently regarded as an important function of the auditory system in both humans and animals, crucial for survival in environments that typically contain multiple sound sources. This article reviews recent findings concerning the possible neural mechanisms behind this perceptual phenomenon at the level of the auditory cortex. The first part is devoted to intra-cortical recordings, which provide insight into the neural "micromechanisms" of auditory streaming in the primary auditory cortex (A1). In the second part, recent results obtained using functional magnetic resonance imaging (fMRI) and magnetoencephalography (MEG) in humans, which suggest a contribution from cortical areas other than A1, are presented. Overall, the findings concur to demonstrate that many important features of sequential streaming can be explained relatively simply based on neural responses in the auditory cortex.
authors.affiliation: Department of Psychology, University of Minnesota, MN, USA. cmicheyl@umn.edu
authors.forename: Christophe
authors.initials: C
authors.lastname: Micheyl
authors.forename: Robert P
authors.initials: RP
authors.lastname: Carlyon
authors.forename: Alexander
authors.initials: A
authors.lastname: Gutschalk
authors.forename: Jennifer R
authors.initials: JR
authors.lastname: Melcher
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Oxenham
authors.forename: Josef P
authors.initials: JP
authors.lastname: Rauschecker
authors.forename: Biao
authors.initials: B
authors.lastname: Tian
authors.forename: E
authors.initials: E
authors.lastname: Courtenay Wilson
mesh_terms: D000161:Acoustic Stimulation; D000818:Animals; D001303:Auditory Cortex / Q000033:anatomy & histology / Q000502:physiology*; D001307:Auditory Perception / Q000502:physiology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D015225:Magnetoencephalography; D010898:Pitch Perception / Q000502:physiology; D011571:Psychoacoustics