Grace Wallsinger, Maeve R. Boylan, Jessica Sanches Braga Figueira, Ryan Barry-Anwar, Gabriella Silva, Andreas Keil, Lisa S. Scott
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Experience With Face Groups Impacts Face Processing, but Not Face Differentiation in 6- and 9-Month-Old Infants
The present study examined neural differentiation of faces from familiar and unfamiliar race groups at 6 and 9 months of age. Two of four face groups (one familiar and one unfamiliar) were shown to infants based on parent reports of infant face experience. Infants completed a fast periodic visual stimulation (FPVS) EEG task in which separate blocks of familiar and unfamiliar face groups, equated for low-level visual differences, were presented at a rate of 6 Hz. Within each block, a different individual was presented at 1.2 Hz (every fifth face). A medial occipital 6 Hz neural response was greater for faces from the familiar compared to the unfamiliar group, which was primarily driven by the 6-month-old age group. A robust occipital 1.2 Hz response was present for both ages and for both familiar and unfamiliar face groups, suggesting individual-level face differentiation. However, the topography of the 1.2 Hz response differed for 6- and 9-month-olds and suggests that face differentiation becomes increasingly right lateralized with age. The present results highlight the importance of face experience on visuocortical brain responses associated with face processing (6 Hz) and suggest that face differentiation (1.2 Hz) is present by 6 months of age and not impacted by face familiarity.
期刊介绍:
Developmental Psychobiology is a peer-reviewed journal that publishes original research papers from the disciplines of psychology, biology, neuroscience, and medicine that contribute to an understanding of behavior development. Research that focuses on development in the embryo/fetus, neonate, juvenile, or adult animal and multidisciplinary research that relates behavioral development to anatomy, physiology, biochemistry, genetics, or evolution is appropriate. The journal represents a broad phylogenetic perspective on behavior development by publishing studies of invertebrates, fish, birds, humans, and other animals. The journal publishes experimental and descriptive studies whether carried out in the laboratory or field.
The journal also publishes review articles and theoretical papers that make important conceptual contributions. Special dedicated issues of Developmental Psychobiology , consisting of invited papers on a topic of general interest, may be arranged with the Editor-in-Chief.
Developmental Psychobiology also publishes Letters to the Editor, which discuss issues of general interest or material published in the journal. Letters discussing published material may correct errors, provide clarification, or offer a different point of view. Authors should consult the editors on the preparation of these contributions.