Functional imaging of the auditory processing applied to speech sounds

Patterson, Roy D.; Johnsrude, Ingrid S.

doi:10.1098/rstb.2007.2157

Cited by 25 publications

(18 citation statements)

References 109 publications

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“…It is interesting to note that the anatomical sites and physiological pathways involved in these processes are basically the same. 29 The data concurs with that of another study which investigated these correlations in pre-school children at a high risk for dyslexia. 30 Logically speaking, phonological acquisitionrelated process and discrimination disorders may compromise the incorporation and reorganization of speech sounds.…”

Section: Discussionsupporting

confidence: 76%

Avaliação do processamento auditivo e da discriminação fonêmica em crianças com desenvolvimento fonológico normal e desviante

Attoni¹,

Quintas²,

Mota³

2010

Braz. j. otorhinolaryngol. (Impr.)

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Audi tory processing and phonemic discrimination are essential for communication. Type of study: Retrospective. Aim:To evaluate auditory processing and phonemic discrimination in children with normal and disordered phonological development. Material and Methods:An evaluation of 46 children was carried out: 22 had phonological disorders and 24 had normally developing speech. Diotic , monotic and dichotic tests were applied to assess auditory processing and a test to evaluate phonemic discrimination abilities.Design: Cross-sectional, contemporary. Results:The values of normally-developing children were within the normal range in all auditory processing tests; these children attained maximum phonemic discrimination test scores. Children with phonological disorders performed worse in the latter, and presented disordered auditory processing. Conclusion:Auditory processing and phonemic discrimination in children with phonological disorders are altered. Braz J Otorhinolaryngol. 2010;76(6):762-8. ORIGINAL ARTICLE BJORL

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Section: Discussionsupporting

confidence: 76%

Avaliação do processamento auditivo e da discriminação fonêmica em crianças com desenvolvimento fonológico normal e desviante

Attoni¹,

Quintas²,

Mota³

2010

Braz. j. otorhinolaryngol. (Impr.)

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“…The STS ROI was defined using a conjunction analysis to find all voxels that responded to both auditory words and visual faces significantly greater than baseline in the anatomically-defined posterior STS (T > 2 for each modality) (Beauchamp, 2005; Beauchamp et al, 2008). The auditory cortex ROI was defined using the contrast of auditory words vs. baseline (T > 2) to find active voxels within Heschl’s gyrus (Patterson and Johnsrude, 2008; Upadhyay et al, 2008). The extrastriate visual cortex ROI was defined using the contrast of visual faces vs. baseline (T > 2) within extrastriate lateral occipitotemporal cortex (Dumoulin et al, 2000).…”

Section: Methodsmentioning

confidence: 99%

Neural Correlates of Interindividual Differences in Children's Audiovisual Speech Perception

Nath

Fava²,

Beauchamp³

2011

J. Neurosci.

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Children use information from both the auditory and visual modalities to aid in understanding speech. A dramatic illustration of this multisensory integration is the McGurk effect, an illusion in which an auditory syllable is perceived differently when it is paired with an incongruent mouth movement. However, there are significant interindividual differences in McGurk perception: some children never perceive the illusion, while others always do. Because converging evidence suggests that the posterior superior temporal sulcus (STS) is a critical site for multisensory integration, we hypothesized that activity within the STS would predict susceptibility to the McGurk effect. To test this idea, we used blood-oxygen level dependent functional magnetic resonance imaging (BOLD fMRI) in seventeen children aged 6 to 12 years to measure brain responses to three audiovisual stimulus categories: McGurk incongruent, non-McGurk incongruent and congruent syllables. Two separate analysis approaches, one using independent functional localizers and another using whole-brain voxel-based regression, showed differences in the left STS between perceivers and non-perceivers. The STS of McGurk perceivers responded significantly more than non-perceivers to McGurk syllables, but not to other stimuli, and perceivers’ hemodynamic responses in the STS were significantly prolonged. In addition to the STS, weaker differences between perceivers and non-perceivers were observed in the FFA and extrastriate visual cortex. These results suggest that the STS is an important source of interindividual variability in children’s audiovisual speech perception.

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“…frontal lobe regions' (Price et al 2005). For more details of this flourishing new area see the paper in this issue by Patterson & Johnsrude (2008).…”

Section: Auditory Scene Analysismentioning

confidence: 99%

Listening to speech in the presence of other sounds

Darwin

2007

Phil. Trans. R. Soc. B

177

147

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Although most research on the perception of speech has been conducted with speech presented without any competing sounds, we almost always listen to speech against a background of other sounds which we are adept at ignoring. Nevertheless, such additional irrelevant sounds can cause severe problems for speech recognition algorithms and for the hard of hearing as well as posing a challenge to theories of speech perception. A variety of different problems are created by the presence of additional sound sources: detection of features that are partially masked, allocation of detected features to the appropriate sound sources and recognition of sounds on the basis of partial information. The separation of sounds is arousing substantial attention in psychoacoustics and in computer science. An effective solution to the problem of separating sounds would have important practical applications.

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Functional imaging of the auditory processing applied to speech sounds

Cited by 25 publications

References 109 publications

Avaliação do processamento auditivo e da discriminação fonêmica em crianças com desenvolvimento fonológico normal e desviante

Avaliação do processamento auditivo e da discriminação fonêmica em crianças com desenvolvimento fonológico normal e desviante

Neural Correlates of Interindividual Differences in Children's Audiovisual Speech Perception

Listening to speech in the presence of other sounds

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