Neural Processing of Acoustic Duration and Phonological German Vowel Length: Time Courses of Evoked Fields in Response to Speech and Nonspeech Signals

Autor/inn/en	Tomaschek, Fabian; Truckenbrodt, Hubert; Hertrich, Ingo
Titel	Neural Processing of Acoustic Duration and Phonological German Vowel Length: Time Courses of Evoked Fields in Response to Speech and Nonspeech Signals
Quelle	In: Brain and Language, 124 (2013) 1, S.117-131 (15 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0093-934X
DOI	10.1016/j.bandl.2012.11.011
Schlagwörter	Language Processing; Brain Hemisphere Functions; Auditory Perception; Syllables; Vowels; Exhibits; German; Diagnostic Tests; Auditory Stimuli; Speech; Language Rhythm; Classification; Responses; Listening Skills + Suchen Sie Ihr Suchwort? Sprachverarbeitung; Auditive Wahrnehmung; Akustische Wahrnehmung; Akustik; Silbe; Deutscher; Diagnostic test; Diagnostischer Test; Auditive Stimulation; Speaking; Sprechen; Sprachrhythmus; Classification system; Klassifikation; Klassifikationssystem
Abstract	Recent experiments showed that the perception of vowel length by German listeners exhibits the characteristics of categorical perception. The present study sought to find the neural activity reflecting categorical vowel length and the short-long boundary by examining the processing of non-contrastive durations and categorical length using MEG. Using disyllabic words with varying /a/-durations and temporally-matched nonspeech stimuli, we found that each syllable elicited an "M50"/"M100"-complex. The "M50"-amplitude to the second syllable varied along the durational continuum, possibly reflecting the mapping of duration onto a rhythm representation. Categorical length was reflected by an additional response elicited when vowel duration exceeded the short-long boundary. This was interpreted to reflect the integration of an additional timing unit for long in contrast to short vowels. Unlike to speech, responses to short nonspeech durations lacked a "M100" to the first and "M50" to the second syllable, indicating different integration windows for speech and nonspeech signals. (Contains 2 tables and 6 figures.) (As Provided).
Anmerkungen	Elsevier. 6277 Sea Harbor Drive, Orlando, FL 32887-4800. Tel: 877-839-7126; Tel: 407-345-4020; Fax: 407-363-1354; e-mail: usjcs@elsevier.com; Web site: http://www.elsevier.com
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10