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The Lateral Occipital Cortex Is Selective for Object Shape, Not Texture/Color, at Six Months

Author(s): Emberson, Lauren L.; Crosswhite, Stephen L.; Richards, John E.; Aslin, Richard N.

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Abstract: Understanding how the human visual system develops is crucial to understanding the nature and organization of our complex and varied visual representations. However, previous investigations of the development of the visual system using fMRI are primarily confined to a subset of the visual system (high-level vision: faces, scenes) and relatively late in visual development (starting at 4–5 years of age). The current study extends our understanding of human visual development by presenting the first systematic investigation of a mid-level visual region [the lateral occipital cortex (LOC)] in a population much younger than has been investigated in the past: 6 month olds. We use functional near-infrared spectroscopy (fNIRS), an emerging optical method for recording cortical hemodynamics, to perform neuroimaging with this very young population. Whereas previous fNIRS studies have suffered from imprecise neuroanatomical localization, we rely on the most rigorous MR coregistration of fNIRS data to date to image the infant LOC. We find surprising evidence that at 6 months the LOC has functional specialization that is highly similar to adults. Following Cant and Goodale (2007), we investigate whether the LOC tracks shape information and not other cues to object identity (e.g., texture/material). This finding extends evidence of LOC specialization from early childhood into infancy and earlier than developmental trajectories of high-level visual regions.
Publication Date: 29-Mar-2017
Electronic Publication Date: 6-Mar-2017
Citation: Emberson, Lauren L, Crosswhite, Stephen L, Richards, John E, Aslin, Richard N. (2017). The Lateral Occipital Cortex Is Selective for Object Shape, Not Texture/Color, at Six Months. The Journal of Neuroscience, 37 (13), 3698 - 3703. doi:10.1523/JNEUROSCI.3300-16.2017
DOI: doi:10.1523/JNEUROSCI.3300-16.2017
ISSN: 0270-6474
EISSN: 1529-2401
Pages: 3698 - 3703
Type of Material: Journal Article
Journal/Proceeding Title: The Journal of Neuroscience
Version: Final published version. Article is made available in OAR by the publisher's permission or policy.

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