Journal article
Electrophysiological Evidence for Top-Down Lexical Influences on Early Speech Perception
Psychological science, Vol.30(6), pp.830-841
06/2019
DOI: 10.1177/0956797619841813
PMID: 31018103
Abstract
An unresolved issue in speech perception concerns whether top-down linguistic information influences perceptual responses. We addressed this issue using the event-related-potential technique in two experiments that measured cross-modal sequential-semantic priming effects on the auditory N1, an index of acoustic-cue encoding. Participants heard auditory targets (e.g., “potatoes”) following associated visual primes (e.g., “MASHED”), neutral visual primes (e.g., “FACE”), or a visual mask (e.g., “XXXX”). Auditory targets began with voiced (/b/, /d/, /g/) or voiceless (/p/, /t/, /k/) stop consonants, an acoustic difference known to yield differences in N1 amplitude. In Experiment 1 (N = 21), semantic context modulated responses to upcoming targets, with smaller N1 amplitudes for semantic associates. In Experiment 2 (N = 29), semantic context changed how listeners encoded sounds: Ambiguous voice-onset times were encoded similarly to the voicing end point elicited by semantic associates. These results are consistent with an interactive model of spoken-word recognition that includes top-down effects on early perception.
Details
- Title: Subtitle
- Electrophysiological Evidence for Top-Down Lexical Influences on Early Speech Perception
- Creators
- Laura M. Getz - Villanova UniversityJoseph C. Toscano - Villanova University
- Resource Type
- Journal article
- Publication Details
- Psychological science, Vol.30(6), pp.830-841
- Publisher
- SAGE Publications
- DOI
- 10.1177/0956797619841813
- PMID
- 31018103
- ISSN
- 0956-7976
- eISSN
- 1467-9280
- Language
- English
- Date published
- 06/2019
- Academic Unit
- Psychological and Brain Sciences
- Record Identifier
- 9984627240702771
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