title: Hemispheric lateralization in preattentive processing of speech sounds.
abstract: Event-related magnetoencephalographic (MEG) responses to infrequently presented spoken deviant syllables [di] and [ba] among repetitive standard [da)]syllables were recorded in subjects who either attended to these stimuli in order to discriminate the [ba] syllables or ignored them while attending a silent movie. In both conditions, the deviant syllables elicited a mismatch response (MMNm, the magnetic counterpart of mismatch negativity), which was stronger in the left than in the right auditory cortex, indicating left-hemispheric dominance in speech processing already at a preattentive processing level.
authors.affiliation: Department of Psychology, University of Helsinki, Finland. kalho@helsinki.fi
authors.forename: K
authors.initials: K
authors.lastname: Alho
authors.forename: J F
authors.initials: JF
authors.lastname: Connolly
authors.forename: M
authors.initials: M
authors.lastname: Cheour
authors.forename: A
authors.initials: A
authors.lastname: Lehtokoski
authors.forename: M
authors.initials: M
authors.lastname: Huotilainen
authors.forename: J
authors.initials: J
authors.lastname: Virtanen
authors.forename: R
authors.initials: R
authors.lastname: Aulanko
authors.forename: R J
authors.initials: RJ
authors.lastname: Ilmoniemi
mesh_terms: D000161:Acoustic Stimulation; D000328:Adult; D001288:Attention / Q000502:physiology; D001931:Brain Mapping; D004585:Electrooculography; D005071:Evoked Potentials / Q000502:physiology; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D015225:Magnetoencephalography; D008297:Male; D008875:Middle Aged; D013067:Speech Perception / Q000502:physiology*