Dissociable systems for recognizing places and navigating through them: developmental and neuropsychological evidence Pubblico

Abstract

Recent neuroimaging studies in adult humans suggest that scene processing depends on dissociable systems for scene categorization (i.e., recognizing a place as a particular kind of place, for example, a kitchen) – including the parahippocampal place area (PPA) – and visually guided navigation (e.g., finding our way through a kitchen, not running into the kitchen walls or banging into the kitchen table) - including the occipital place area (OPA). A stronger test of this hypothesis would ask whether there is differential development of these systems in a typically developing (TD) population, and whether there is differential breakdown under neurological deficit. Here we tested scene categorization and visually guided navigation abilities in 131 TD male and female children between 4 and 9 years of age, as well as 46 male and female adults with Williams syndrome (WS) – a developmental disorder involving cortical thinning in and around OPA. We found that i) visually guided navigation is later to develop than scene categorization, and ii) WS adults are impaired in visually guided navigation, but not scene categorization, relative to mental-age matched children. These findings provide the first developmental and neuropsychological evidence for dissociable scene processing systems for recognizing places and navigating through them.

Table of Contents

 Significance statement ……………………………………………………………………………1

Introduction ……………………………………………………………………………………….1

Materials and Methods ……………………………………………………………………………3

Results ……………………………………….……………………………………………………6

Discussion ……………………………………….………………………………………………15

References ……………………………………….………………………………………………19

Tables ……………………………………….…………………………………………………...25

Table 1 ……………………………………….…………………………………………..25

Figures …………………………………………………………………………………………...26

Figure 1 …………………………………………………………………………………..26

Figure 2…………………………………………………………………………………..27

Figure 3…………………………………………………………………………………..28

Figure 4…………………………………………………………………………………..29

Figure 5…………………………………………………………………………………..30

Figure 6…………………………………………………………………………………..31

About this Master's Thesis

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School	Laney Graduate School
Department	Psychology
Degree	M.A.
Submission	Master's Thesis
Language	English
Research Field	Psychology, Developmental Psychology, Cognitive
Parola chiave	cognitive science
Committee Chair / Thesis Advisor	Daniel D. Dilks, Emory University Michael T. Treadway, Emory University
Committee Members	Stella F. Lourenco, Emory University

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