The effect of lexical status on prosodic processing in infants learning a fixed stress language
| Autor: | Ferenc Honbolygó, Anett Ragó, Linda Garami, Valéria Csépe, Zsuzsanna Varga |
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| Rok vydání: | 2021 |
| Předmět: |
Male
Cognitive Neuroscience Experimental and Cognitive Psychology First year of life Stimulus (physiology) Language Development Developmental Neuroscience Stress (linguistics) Humans Prosody Evoked Potentials Biological Psychiatry Psycholinguistics Endocrine and Autonomic Systems General Neuroscience Infant Electroencephalography Language acquisition Speech processing Pseudoword Neuropsychology and Physiological Psychology Neurology Speech Perception Facilitation Female Psychology Cognitive psychology |
| Zdroj: | Psychophysiology. 58 |
| ISSN: | 1469-8986 0048-5772 |
| DOI: | 10.1111/psyp.13932 |
| Popis: | In speech processing, in the first year of life, prosody and phoneme-relevant aspects serve different functions. Recent studies have assumed that the two aspects become integrated at around 9 months of age. The present study investigates the effect of lexical status on stress processing in a fixed stress language. We hypothesize that lexicality modulates stress processing, and where the stress cue is in conflict with the lexical status (legal deviant condition), we will observe differences in age indicating the stage of integration. We tested 69 6 and 10 month-old infants in an acoustic oddball event-related potential paradigm. A frequent word stimulus (baba) and a pseudoword (bebe) were used with legal versus illegal stress. We systematically swapped the standard and deviant roles of the different stress variants in two conditions. In the illegal deviant condition in the case of the word stimulus, the response pattern typical for the pseudoword (an MMR to the absence of the stress cue) was missing. This implies the suppression effect of lexicality. In the legal deviant condition, negative MMR (N-MMR) in the second time window indicated a facilitation effect of lexicality in both age groups. As only the 6-month-olds produced an N-MMR in the first time window, we concluded that in a fixed stress language, integration starts at 6 months but is only completed by the age of 10 months. Our results show that lexical status modulates stress processing at word level in a highly regularly stressed language in which stable, long-term language-specific stress representation exists from early infancy. |
| Databáze: | OpenAIRE |
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