Journal article
What Are You Waiting For? Real-Time Integration of Cues for Fricatives Suggests Encapsulated Auditory Memory
Cognitive science, Vol.43(1), pp.e12700-n/a
01/2019
DOI: 10.1111/cogs.12700
PMCID: PMC6338078
PMID: 30648798
Abstract
Speech unfolds over time, and the cues for even a single phoneme are rarely available simultaneously. Consequently, to recognize a single phoneme, listeners must integrate material over several hundred milliseconds. Prior work contrasts two accounts: (a) a memory buffer account in which listeners accumulate auditory information in memory and only access higher level representations (i.e., lexical representations) when sufficient information has arrived; and (b) an immediate integration scheme in which lexical representations can be partially activated on the basis of early cues and then updated when more information arises. These studies have uniformly shown evidence for immediate integration for a variety of phonetic distinctions. We attempted to extend this to fricatives, a class of speech sounds which requires not only temporal integration of asynchronous cues (the frication, followed by the formant transitions 150-350 ms later), but also integration across different frequency bands and compensation for contextual factors like coarticulation. Eye movements in the visual world paradigm showed clear evidence for a memory buffer. Results were replicated in five experiments, ruling out methodological factors and tying the release of the buffer to the onset of the vowel. These findings support a general auditory account for speech by suggesting that the acoustic nature of particular speech sounds may have large effects on how they are processed. It also has major implications for theories of auditory and speech perception by raising the possibility of an encapsulated memory buffer in early auditory processing.
Details
- Title: Subtitle
- What Are You Waiting For? Real-Time Integration of Cues for Fricatives Suggests Encapsulated Auditory Memory
- Creators
- Marcus E Galle - Department of Psychological and Brain Sciences, University of IowaJamie Klein-Packard - Department of Psychological and Brain Sciences, University of IowaKayleen Schreiber - Interdisciplinary Program in Neuroscience, University of IowaBob McMurray - Department of Otolaryngology, University of Iowa
- Resource Type
- Journal article
- Publication Details
- Cognitive science, Vol.43(1), pp.e12700-n/a
- Publisher
- United States
- DOI
- 10.1111/cogs.12700
- PMID
- 30648798
- PMCID
- PMC6338078
- ISSN
- 0364-0213
- eISSN
- 1551-6709
- Grant note
- R01 DC008089 / NIDCD NIH HHS P50 DC000242 / NIDCD NIH HHS
- Language
- English
- Date published
- 01/2019
- Academic Unit
- Communication Sciences and Disorders; Linguistics; Psychological and Brain Sciences; Iowa Neuroscience Institute; Otolaryngology
- Record Identifier
- 9984070626702771
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