Social environment elicits lateralized navigational paths in two populations of typically developing children |
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| Institution: | 1. School of Medicine and Pharmacology, University of Western Australia, Australia;2. School of Women’s and Infant’s Health, University of Western Australia;3. Department of Endocrinology and Diabetes, Sir Charles Gairdner Hospital, Nedlands, Australia;4. Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Canada;5. Department of Physiology, University of Toronto, Canada;1. Laboratory of Neuropsychology and Cognitive Neuroscience, Department of Neuroscience, Imaging and Clinical Sciences, University G. d’Annunzio, via dei Vestini 33, 66100 Chieti Scalo, Italy;2. ITAB, Foundation G. d’Annunzio, via dei Vestini 33, 66100 Chieti Scalo, Italy;3. Department of Experimental Psychology, Ghent University, Henri-Dunantlaan 2, 9000 Ghent, Belgium;1. Department of Animals Production and Poultry Products Evaluation, Faculty of Biology and Agriculture, University of Rzeszow, Rzeszow, Poland;2. Department of Ethology and Animal Welfare, University of Life Sciences in Lublin, Lublin, Poland;1. Laboratory for Symbolic Cognitive Development, RIKEN Brain Science Institute, 2-1 Hirosawa, Wako City 351-0198, Japan;2. Rhythm-based Brain Information Processing Unit, RIKEN Brain Science Institute, 2-1 Hirosawa, Wako City 351-0198, Japan;3. Laboratory for Advance Brain Signal Processing, RIKEN Brain Science Institute, 2-1 Hirosawa, Wako City 351-0198, Japan;4. Support Unit for Functional Magnetic Resonance Imaging, RIKEN Brain Science Institute, 2-1 Hirosawa, Wako City 351-0198, Japan;5. Division of Developmental Cognitive Neuroscience, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryocho, Aobaku, Sendai 980-8575, Japan;6. Graduate School of Arts and Sciences, University of Tokyo, 3-8-1 Komaba, Meguroku, Tokyo 153, Japan;1. Department of Psychiatry and Behavioral Health, The Ohio State University, 1670 Upham Drive, Suite 460, Columbus, OH 43210, USA;2. Departments of Psychology and Nutrition, The Ohio State University, 1670 Upham Drive, Suite 460, Columbus, OH 43210, USA |
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| Abstract: | The current study provides the first evidence of human lateralized navigation of a social space within a naturalistic environment. We employed a quantitative, observational approach and report on a detailed set of nearly 700 independent navigational routes from two separate child populations consisting of over 300 typically developing children, aged five to fourteen years. The navigational path was considered across the sagittal plane (left, right) around three distinct target types (peer, adult and object). Both child populations expressed a significant bias for choosing a rightward navigational path around a human target (e.g. peer, adult) and no lateral preference for navigation around fixed, inanimate objects. A rightward navigational path provides an advantage for the left visual field and the right hemisphere, facilitating both the production and perception of social-emotion stimuli. The findings are consistent with evidence from studies of non-human animal species demonstrating that the social environment elicits predictable lateralized behavior, and support an early evolutionary delineation of functional processing by the two hemispheres. |
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| Keywords: | Laterality Cerebral lateralization Social environment Children |
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