Hemispheric lateralization in preattentive processing of speech sounds

Neurosci Lett. 1998 Dec 11;258(1):9-12. doi: 10.1016/s0304-3940(98)00836-2.


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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acoustic Stimulation
  • Adult
  • Attention / physiology
  • Brain Mapping
  • Electrooculography
  • Evoked Potentials / physiology
  • Female
  • Functional Laterality / physiology*
  • Humans
  • Magnetoencephalography
  • Male
  • Middle Aged
  • Speech Perception / physiology*