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October 2021

An ERP correlate of metrical stress in spoken word recognition

Author(s): Bastiaansen, M. C. M., Vroomen, J., Brunia, C. H. M., DeGelder, B.

Journal/Book: Psychophysiology. 1999; 36: 40 West 20Th Street, New York, NY 10011-4211, USA. Cambridge Univ Press. 706-720.

Abstract: Rhythmic properties of spoken language such as metrical stress, that is, the alternation of strong and weak syllables, are important in speech recognition of stress-timed languages such as Dutch and English. Nineteen subjects Listened passively to or discriminated actively between sequences of bisyllabic Dutch words, which started with either a weak or a strong syllable. Weak-initial words, which constitute 12% of the Dutch lexicon, evoked more negativity than strong-initial words in the interval between P2 and N400 components of the auditory event-related potential. This negativity was denoted as N325. The N325 was larger during stress discrimination than during passive Listening. N325 was also larger when a weak-initial word followed a sequence of strong-initial words than when it followed words with the same stress pattern. The latter difference was larger for listeners who performed well on stress discrimination. It was concluded that the N325 is probably a manifestation of the extraction of metrical stress from the acoustic Signal and its transformation into task requirements.

Note: Article Bocker KBE, Univ Utrecht, Dept Psychopharmacol, POB 80082, NL-3508 TB Utrecht, NETHERLANDS

Keyword(s): speech recognition; metrical stress; rhythm; prosody; auditory event-related potentials; EVENT-RELATED POTENTIALS; BRAIN POTENTIALS; SPEECH SEGMENTATION; ELECTRICAL-ACTIVITY; LEXICAL ACCESS; SENTENCES; LANGUAGE; RESPONSES; N400; COMPREHENSION


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