title: Seeing speech: visual information from lip movements modifies activity in the human auditory cortex.
abstract: Neuromagnetic responses were recorded over the left hemisphere to find out in which cortical area the heard and seen speech are integrated. Auditory stimuli were Finnish/pa/syllables presented together with a videotaped face articulating either the concordant syllable/pa/(84% of stimuli, V = A) or the discordant syllable/ka/(16%, V not equal to A). In some subjects the probabilities were reversed. The subjects heard V not equal to A stimuli as/ta/ or ka. The magnetic responses to infrequent perceptions elicited a specific waveform which could be explained by activity in the supratemporal auditory cortex. The results show that visual information from articulatory movements has an entry into the auditory cortex.
authors.affiliation: Low Temperature Laboratory, Helsinki University of Technology, Espoo, Finland.
authors.forename: M
authors.initials: M
authors.lastname: Sams
authors.forename: R
authors.initials: R
authors.lastname: Aulanko
authors.forename: M
authors.initials: M
authors.lastname: Hämäläinen
authors.forename: R
authors.initials: R
authors.lastname: Hari
authors.forename: O V
authors.initials: OV
authors.lastname: Lounasmaa
authors.forename: S T
authors.initials: ST
authors.lastname: Lu
authors.forename: J
authors.initials: J
authors.lastname: Simola
mesh_terms: D000328:Adult; D001303:Auditory Cortex / Q000502:physiology*; D005260:Female; D006801:Humans; D008046:Lip; D008085:Lipreading; D015225:Magnetoencephalography; D008297:Male; D009068:Movement; D013067:Speech Perception / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology