title: Mothers' multimodal information processing is modulated by multimodal interactions with their infants.
abstract: Social learning in infancy is known to be facilitated by multimodal (e.g., visual, tactile, and verbal) cues provided by caregivers. In parallel with infants' development, recent research has revealed that maternal neural activity is altered through interaction with infants, for instance, to be sensitive to infant-directed speech (IDS). The present study investigated the effect of mother- infant multimodal interaction on maternal neural activity. Event-related potentials (ERPs) of mothers were compared to non-mothers during perception of tactile-related words primed by tactile cues. Only mothers showed ERP modulation when tactile cues were incongruent with the subsequent words, and only when the words were delivered with IDS prosody. Furthermore, the frequency of mothers' use of those words was correlated with the magnitude of ERP differentiation between congruent and incongruent stimuli presentations. These results suggest that mother-infant daily interactions enhance multimodal integration of the maternal brain in parenting contexts.
authors.affiliation: 1] Graduate school of Education, Kyoto University, Kyoto, Japan [2] Japan Society for the Promotion of Science, Tokyo, Japan.
authors.forename: Yukari
authors.initials: Y
authors.lastname: Tanaka
authors.affiliation: Faculty of Sociology, Kansai University, Suita, Osaka, Japan.
authors.forename: Hirokata
authors.initials: H
authors.lastname: Fukushima
authors.affiliation: 1] Japan Science and Technology Agency, Kawaguchi, Saitama, Japan [2] Graduate School of Arts and Science, University of Tokyo, Meguro, Tokyo, Japan.
authors.forename: Kazuo
authors.initials: K
authors.lastname: Okanoya
authors.affiliation: 1] Graduate school of Education, Kyoto University, Kyoto, Japan [2] Japan Science and Technology Agency, Kawaguchi, Saitama, Japan.
authors.forename: Masako
authors.initials: M
authors.lastname: Myowa-Yamakoshi
mesh_terms: D000328:Adult; D001921:Brain / Q000502:physiology*; D005071:Evoked Potentials; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008425:Maternal Behavior / Q000502:physiology* / Q000523:psychology; D009034:Mother-Child Relations; D013067:Speech Perception / Q000502:physiology