Sublexical properties of spoken words modulate activity in Broca's area but not superior temporal cortex: implications for models of speech recognition
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Many models of spoken word recognition posit that the acoustic stream is parsed into phoneme level units, which in turn activate larger representations [McClelland, J. L., & Elman, J. L. The TRACE model of speech perception. Cognitive Psychology, 18, 1-86, 1986], whereas others suggest that larger units of analysis are activated without the need for segmental mediation [Greenberg, S. A multitier theoretical framework for understanding spoken language. In S. Greenberg & W. A. Ainsworth (Eds.), Listening to speech: An auditory perspective (pp. 411-433). Mahwah, NJ: Erlbaum, 2005; Klatt, D. H. Speech perception: A model of acoustic-phonetic analysis and lexical access. Journal of Phonetics, 7, 279-312, 1979; Massaro, D. W. Preperceptual images, processing time, and perceptual units in auditory perception. Psychological Review, 79, 124-145, 1972]. Identifying segmental effects in the brain's response to speech may speak to this question. For example, if such effects were localized to relatively early processing stages in auditory cortex, this would support a model of speech recognition in which segmental units are explicitly parsed out. In contrast, segmental processes that occur outside auditory cortex may indicate that alternative models should be considered. The current fMRI experiment manipulated the phonotactic frequency (PF) of words that were auditorily presented in short lists while participants performed a pseudoword detection task. PF is thought to modulate networks in which phoneme level units are represented. The present experiment identified activity in the left inferior frontal gyrus that was positively correlated with PF. No effects of PF were found in temporal lobe regions. We propose that the observed phonotactic effects during speech listening reflect the strength of the association between acoustic speech patterns and articulatory speech codes involving phoneme level units. On the basis of existing lesion evidence, we interpret the function of this auditory-motor association as playing a role primarily in production. These findings are consistent with the view that phoneme level units are not necessarily accessed during speech recognition.
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Left posterior inferior frontal activation is related to articulatory processes because it is positively correlated with the phonotactic frequency of heard sounds.
“There was continued support for the view that the left posterior inferior frontal activation is related to articulatory processes because it was positively correlated with the phonotactic frequency (the pronounceability of combinations of phonemes) of heard sounds (Vaden et al., 2011).”
From A review and synthesis of the first 20years of PET and fMRI studies of heard speech, spoken language and reading (2012) · cites this paper as Vaden et al., 2011
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Research works printed but not linked: 2
- Hickok G 2009b Speech perception does not rely on motor cortex Available at: www.cell.com/current-biology/comments/S0960-9822(09)00556-9
- Vaden KI 2009 Phonological processes in speech perception Doctoral thesis University of California Irvine Retrieved from proquest.umi.com/pqdweb?did=1781083831&sid=1&Fmt=6&clientId=48051&RQT=309&VName=PQD
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- Authors
- Vaden, K. I., Piquado, T., & Hickok, G.
- Affiliations
- Medical University of South Carolina (US)
- Venue
- Journal of Cognitive Neuroscience
- Publisher
- MIT Press - Journals
- Published
- 2011-10-01
- Volume
- 23
- Issue
- 10
- Pages
- 2665-2674
- ISSN
- 0898-929X (ISSN-L)
- 1530-8898
- PMC
- PMC5988210
- OpenAlex
- W2146665243
- Cited by
- 36
- References
- 79
- Citations by year
- 2024: 2 · 2023: 1 · 2022: 1 · 2021: 4 · 2020: 1 · 2019: 2 · 2018: 3 · 2017: 5 · 2016: 6 · 2015: 1 · 2013: 4 · 2012: 5
- FWCI
- 1.62
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Journal of Cognitive Neuroscience (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institutes of Health
- U.S. Public Health Service (D 003681)
- National Institute on Deafness and Other Communication Disorders (R01DC003681)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neurobiology of Language and Bilingualism
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Phonetics and Phonology Research
- Social Sciences › Psychology › Developmental and Educational Psychology › Reading and Literacy Development
- Keywords
- spoken word recognition, Broca's area, inferior frontal gyrus, superior temporal cortex, TRACE model, speech perception
- MeSH terms
- Acoustic Stimulation, Adolescent, Adult, Analysis of Variance, Brain Mapping, Female, Frontal Lobe, Humans, Image Processing, Computer-Assisted, Functional Laterality, Magnetic Resonance Imaging, Male, Oxygen, Reaction Time, Speech, Speech Perception, Temporal Lobe, Vocabulary, Pattern Recognition, Physiological, Young Adult
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