Journal article
The organization of words and environmental sounds in the second year: Behavioral and electrophysiological evidence
Developmental science, Vol.22(1), pp.e12746-n/a
01/2019
DOI: 10.1111/desc.12746
PMCID: PMC6294716
PMID: 30159958
Abstract
The majority of research examining early auditory-semantic processing and organization is based on studies of meaningful relations between words and referents. However, a thorough investigation into the fundamental relation between acoustic signals and meaning requires an understanding of how meaning is associated with both lexical and non-lexical sounds. Indeed, it is unknown how meaningful auditory information that is not lexical (e.g., environmental sounds) is processed and organized in the young brain. To capture the structure of semantic organization for words and environmental sounds, we record event-related potentials as 20-month-olds view images of common nouns (e.g., dog) while hearing words or environmental sounds that match the picture (e.g., "dog" or barking), that are within-category violations (e.g., "cat" or meowing), or that are between-category violations (e.g., "pen" or scribbling). Results show both words and environmental sounds exhibit larger negative amplitudes to between-category violations relative to matches. Unlike words, which show a greater negative response early and consistently to within-category violations, such an effect for environmental sounds occurs late in semantic processing. Thus, as in adults, the young brain represents semantic relations between words and between environmental sounds, though it more readily differentiates semantically similar words compared to environmental sounds.
Details
- Title: Subtitle
- The organization of words and environmental sounds in the second year: Behavioral and electrophysiological evidence
- Creators
- Kristi Hendrickson - Department of Communication Sciences & Disorders, University of Iowa, Iowa City, IowaTracy Love - School of Speech, Language, and Hearing Sciences, San Diego State University, San Diego, CaliforniaMatthew Walenski - School of Communication, Northwestern University, Evanston, IllinoisMargaret Friend - Department of Psychology, San Diego State University, San Diego, California
- Resource Type
- Journal article
- Publication Details
- Developmental science, Vol.22(1), pp.e12746-n/a
- DOI
- 10.1111/desc.12746
- PMID
- 30159958
- PMCID
- PMC6294716
- NLM abbreviation
- Dev Sci
- ISSN
- 1363-755X
- eISSN
- 1467-7687
- Publisher
- England
- Grant note
- 5T32DC007361 / NIH HHS 5R01HD068458-02 / National Institute of Child Health and Human Development R01 HD068458 / NICHD NIH HHS R01 DC009272 / NIDCD NIH HHS T32 DC007361 / NIDCD NIH HHS
- Language
- English
- Date published
- 01/2019
- Academic Unit
- Communication Sciences and Disorders; Center for Social Science Innovation
- Record Identifier
- 9984002335402771
Metrics
16 Record Views