Audio-visual priming in 7-month-old infants: An ERP study |
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| Affiliation: | 1. NTT Communication Science Laboratories, Kyoto, Japan;2. Department of Psychology, Otemon Gakuin University, Osaka, Japan;3. Center for Baby Science, Doshisha University, Kyoto, Japan;1. BCBL. Basque Center on Cognition, Brain and Language, Donostia, Spain;2. IKERBASQUE, Basque Foundation for Science, Spain;3. Stony Brook University, Dept. of Psychology, Stony Brook, NY, United States;1. Donders Institute for Brain, Cognition & Behaviour, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands;2. Department of Clinical and Experimental Cardiology, Academic Medical Center, Amsterdam, The Netherlands;3. L’institut de Rythmologie et Modélisation Cardiaque, Bordeaux, France;1. Ludwig-Maximilians-University, Munich, Germany;2. Laboratoire Parole et Langage, UMR 7309, CNRS / Aix-Marseille University, Aix-en-Provence, France;3. Laboratoire Phonétique et Phonologie, UMR 7018, CNRS / Université Sorbonne Nouvelle Paris-3, Paris, France;4. University of California, Merced, USA;1. Faculty of Psychology, Vita-Salute San Raffaele University, Milan, Italy;2. Department of Neurobiology and Behavior, Nagasaki University, Graduate School of Biomedical Science, Japan;3. Department of Psychology and Cognitive Science, University of Trento, Italy;4. Child and Family Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, USA;5. Division of Psychology, School of Social Sciences, Nanyang Technological University, Singapore;1. Department of Speech, Language, and Hearing Sciences, Purdue University, Lyles Porter Hall, 715 Clinic Drive, West Lafayette, IN 47907-2038, United States;2. Department of Psychological Sciences, Purdue University, 703 Third Street, West Lafayette, IN 47907-2038, United States |
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| Abstract: | The current study investigates categorical priming across modalities in 7-month-old infants using electroencephalographic (EEG) measures. In two experiments, infants were presented with sounds as primes, followed by images of human figures and furniture items as targets. In experiment 1 (N = 20), images were preceded by infant-directed (ID) or adult-directed (AD) speech to explore effects of intermodal categorical mismatches. Furniture targets (mismatching category) elicited an increased amplitude of the Negative central (Nc) component compared to human targets (matching category), p < .01, indicating increased attention. Results did not vary with manner of speaking (ID or AD). Experiment 2 (N = 17) explored whether a categorical mismatch between prime and target would elicit increased positive slow wave (PSW) amplitudes for human targets, indicating increased memory effort. Here, bicycle ringtones and ID speech served as primes. Again, furniture targets elicited an increased Nc regardless of prime category, p < .05, and a categorical change from human speech to furniture target images elicited an increased PSW, p < .05. No PSW effect was found for human targets following bicycle ringtones, however. The experiments reported here suggest that auditory primes may increase infant attention and memory updating particularly for non-social, categorically mismatching stimuli. |
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| Keywords: | EEG ERPs Categorization Intermodal perception Infant Development |
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