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.
journal_name
Brain Langjournal_title
Brain and languageauthors
Tomaschek F,Truckenbrodt H,Hertrich Idoi
10.1016/j.bandl.2012.11.011subject
Has Abstractpub_date
2013-01-01 00:00:00pages
117-31issue
1eissn
0093-934Xissn
1090-2155pii
S0093-934X(12)00214-3journal_volume
124pub_type
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