Document Type

Dissertation

Degree

Doctor of Philosophy (PhD)

Major/Program

Psychology

First Advisor's Name

Shannon Pruden

First Advisor's Committee Title

commitee chair

Second Advisor's Name

Anthony Dick

Second Advisor's Committee Title

committee member

Third Advisor's Name

Aaron Mattfeld

Third Advisor's Committee Title

committee member

Fourth Advisor's Name

Benjamin Baez

Fourth Advisor's Committee Title

committee member

Keywords

neurobiology of spatial memory, development of spatial memory, hippocampus, spatial navigation, spatial reorientation, neuroimaging, trace eyeblink conditioning, EBC, individual differences, structural magnetic resonance imaging, diffusion-weighted imaging, spatial language, relational and directional terms, relative frames of reference

Date of Defense

3-23-2021

Abstract

The current dissertation examined neurological and behavioral approaches to studying the development of large-scale spatial cognition and its underlying neurobiology in young children. Study one reviewed the literature on the development of the neurobiology of spatial navigation and reorientation, including the hippocampus and the parahippocampal, parietal, and prefrontal cortices, and discussed how researchers can overcome the challenges of studying these brain-behavior relations in young children. One solution, I propose, is to employ a hippocampal-dependent form of associative learning known as Pavlovian Trace Eyeblink Conditioning (EBC) to assess hippocampal functioning indirectly and safely in pediatric populations. For the following two empirical studies, children between the ages of four and six years completed three structural magnetic resonance imaging scans (MRI), a hippocampal-dependent eyeblink conditioning paradigm, a spatial reorientation test, a left-right assessment, the Boehm-3 Preschool Test of Basic Concepts, and two control tasks, the Children’s Mental Transformation Task (CMTT) and the NIH Toolbox Pattern Comparison Processing vii Speed (PCPS) Test. Study two (N=31) examined the validity of using a child-friendly, hippocampal-dependent measure of associative learning (i.e., trace EBC) as a proxy for hippocampal function and efficiency. Results revealed that individual differences in greater neurite density of the bilateral hippocampus, but not the cerebellum, predicted later, and thus more efficient, timing of learned associations between auditory and tactile stimuli. Study three (N=39) investigated the role of spatial language on children’s spatial reorientation strategies and outcomes. Findings showed that, independent of age, children who could comprehend relative locations such as left and right, as opposed to general relational concepts, were better at encoding the geometry of a room to recall the location of a hidden object after being disoriented. Implications, limitations, and suggestions for future studies with young children are discussed.

Identifier

FIDC009690

Available for download on Thursday, March 09, 2023

Included in

Psychology Commons

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