Publication:
Dissociating Cortical Activity during Processing of Native and Non-Native Audiovisual Speech from Early to Late Infancy

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dc.contributor.authorFava, Eswen
dc.contributor.authorHull, Rachel
dc.contributor.authorBortfield, Heather
dc.contributor.departmentUniversity of Massachusetts Amherst
dc.contributor.departmentTexas A & M University - College Station
dc.contributor.departmentUniversity of Connecticut - Storrs
dc.date2023-09-24T07:17:53.000
dc.date.accessioned2024-04-26T20:11:35Z
dc.date.available2021-09-27T00:00:00Z
dc.date.issued2014-01-01
dc.description.abstractInitially, infants are capable of discriminating phonetic contrasts across the world’s languages. Starting between seven and ten months of age, they gradually lose this ability through a process of perceptual narrowing. Although traditionally investigated with isolated speech sounds, such narrowing occurs in a variety of perceptual domains (e.g., faces, visual speech). Thus far, tracking the developmental trajectory of this tuning process has been focused primarily on auditory speech alone, and generally using isolated sounds. But infants learn from speech produced by people talking to them, meaning they learn from a complex audiovisual signal. Here, we use near-infrared spectroscopy to measure blood concentration changes in the bilateral temporal cortices of infants in three different age groups: 3-to-6 months, 7-to-10 months, and 11-to-14-months. Critically, all three groups of infants were tested with continuous audiovisual speech in both their native and another, unfamiliar language. We found that at each age range, infants showed different patterns of cortical activity in response to the native and non-native stimuli. Infants in the youngest group showed bilateral cortical activity that was greater overall in response to non-native relative to native speech; the oldest group showed left lateralized activity in response to native relative to non-native speech. These results highlight perceptual tuning as a dynamic process that happens across modalities and at different levels of stimulus complexity
dc.identifier.doihttps://doi.org/10.3390/brainsci4030471
dc.identifier.urihttps://hdl.handle.net/20.500.14394/42312
dc.relation.ispartofBrain Sciences
dc.relation.urlhttps://scholarworks.umass.edu/cgi/viewcontent.cgi?article=1041&context=psych_faculty_pubs&unstamped=1
dc.rightsUMass Amherst Open Access Policy
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.source.issue3
dc.source.issueCognition in Infants
dc.source.issue4
dc.source.statuspublished
dc.subjectnear-infrared spectroscopy (NIRS)
dc.subjectperceptual narrowing
dc.subjectinfancy
dc.subjectaudiovisual speech perception
dc.subjectlanguage
dc.subjectlanguage development
dc.subjectspeech perception
dc.titleDissociating Cortical Activity during Processing of Native and Non-Native Audiovisual Speech from Early to Late Infancy
dc.typearticle
dc.typearticle
digcom.contributor.authorisAuthorOfPublication|email:efava@psych.umass.edu|institution:University of Massachusetts Amherst|Fava, Eswen
digcom.contributor.authorisAuthorOfPublication|email:rhull@tamu.edu|institution:Texas A & M University - College Station|Hull, Rachel
digcom.contributor.authorisAuthorOfPublication|email:heather.bortfeld@uconn.edu|institution:University of Connecticut - Storrs|Bortfield, Heather
digcom.date.embargo2021-09-27T00:00:00-07:00
digcom.identifierpsych_faculty_pubs/41
digcom.identifier.contextkey25141514
digcom.identifier.submissionpathpsych_faculty_pubs/41
dspace.entity.typePublication
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