1. The non-linear development of the right hemispheric specialization for human face perception
- Author
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Adélaïde de Heering, Aliette Lochy, Bruno Rossion, Département de Psychologie, Université de Montréal (UdeM), Psychological Sciences Research Institute (IPSY), and Université Catholique de Louvain = Catholic University of Louvain (UCL)
- Subjects
Male ,genetic structures ,Cognitive Neuroscience ,media_common.quotation_subject ,Face (sociological concept) ,Experimental and Cognitive Psychology ,Electroencephalography ,Positive correlation ,Corpus callosum ,Functional Laterality ,050105 experimental psychology ,Lateralization of brain function ,Developmental psychology ,[SCCO]Cognitive science ,03 medical and health sciences ,Behavioral Neuroscience ,Child Development ,0302 clinical medicine ,Face perception ,Reading (process) ,Specialization (functional) ,medicine ,Humans ,0501 psychology and cognitive sciences ,EEG ,development ,ComputingMilieux_MISCELLANEOUS ,right lateralization ,media_common ,Cerebral Cortex ,medicine.diagnostic_test ,[SCCO.NEUR]Cognitive science/Neuroscience ,Neurosciences & comportement [H07] [Sciences sociales & comportementales, psychologie] ,05 social sciences ,Infant ,medicine.anatomical_structure ,Social Perception ,Child, Preschool ,Scalp ,[SCCO.PSYC]Cognitive science/Psychology ,face perception ,Female ,Neurosciences & behavior [H07] [Social & behavioral sciences, psychology] ,Psychology ,Facial Recognition ,030217 neurology & neurosurgery ,Cognitive psychology - Abstract
The developmental origins of human adults’ right hemispheric specialization for face perception remain unclear. On the one hand, infant studies have shown a right hemispheric advantage for face perception. On the other hand, it has been proposed that the adult right hemispheric lateralization for face perception slowly emerges during childhood due to reading acquisition, which increases left lateralized posterior responses to competing written material (e.g., visual letters and words). Since methodological approaches used in infant and children typically differ when their face capabilities are explored, resolving this issue has been difficult. Here we tested 5-year-old preschoolers varying in their level of visual letter knowledge with the same fast periodic visual stimulation (FPVS) paradigm leading to strongly right lateralized electrophysiological occipito-temporal face-selective responses in 4- to 6-month-old infants (de Heering and Rossion, 2015). Children's face-selective response was quantitatively larger and differed in scalp topography from infants’, but did not differ across hemispheres. There was a small positive correlation between preschoolers’ letter knowledge and a non-normalized index of right hemispheric specialization for faces. These observations show that previous discrepant results in the literature reflect a genuine nonlinear development of the neural processes underlying face perception and are not merely due to methodological differences across age groups. We discuss several factors that could contribute to the adult right hemispheric lateralization for faces, such as myelination of the corpus callosum and reading acquisition. Our findings point to the value of FPVS coupled with electroencephalography to assess specialized face perception processes throughout development with the same methodology.
- Published
- 2019
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