Koch, Griffin E.
(2020)
Neural Representations of Numerical Processing across Semantic, Phonological, Visual, and Manual Formats.
Master's Thesis, University of Pittsburgh.
(Unpublished)
This is the latest version of this item.
Abstract
Outstretched fingers can convey the same information as the symbol “5”, but how does our brain represent these different visual forms so that we understand the number five? Four constituents have been implicated as being involved in adult numerical processing: semantic, visual, manual, and phonological. Here, we utilize a novel paradigm that includes all four constituents, allowing us to ask how the brain represents them simultaneously. We collected functional magnetic resonance imaging (fMRI) data from adult participants while they completed our full code paradigm, as well as an additional paradigm that has been used previously to study numerical processing in adults and children (Cantlon & Li, 2013; Emerson & Cantlon, 2015). During our full code paradigm, participants viewed one of two stimulus types indicating a quantity: Arabic numerals (visual) or hands (manual), while completing one of two tasks: deciding if a quantity was greater than another number (semantic) or if the quantity contained a long vowel sound (phonological). Univariate analyses revealed similar activity during both the full code paradigm and the previously-used paradigm within right and left intraparietal sulcus, right IFG/Insula, and anterior cingulate cortex, while only the full code paradigm identified differences between semantic and phonological processing within left IFG/Insula. Such results, as well as opportunities for multivariate analytic techniques to be applied, support the utility of this novel paradigm for future studies investigating numerical processing.
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Details
| Item Type: |
University of Pittsburgh ETD
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| Status: |
Unpublished |
| Creators/Authors: |
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| ETD Committee: |
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| Date: |
8 June 2020 |
| Date Type: |
Publication |
| Defense Date: |
30 July 2019 |
| Approval Date: |
8 June 2020 |
| Submission Date: |
31 March 2020 |
| Access Restriction: |
2 year -- Restrict access to University of Pittsburgh for a period of 2 years. |
| Number of Pages: |
31 |
| Institution: |
University of Pittsburgh |
| Schools and Programs: |
Dietrich School of Arts and Sciences > Psychology |
| Degree: |
MS - Master of Science |
| Thesis Type: |
Master's Thesis |
| Refereed: |
Yes |
| Uncontrolled Keywords: |
numerical number fMRI |
| Date Deposited: |
08 Jun 2020 15:11 |
| Last Modified: |
24 Mar 2023 18:32 |
| URI: |
http://d-scholarship.pitt.edu/id/eprint/38603 |
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Neural Representations of Numerical Processing across Semantic, Phonological, Visual, and Manual Formats. (deposited 08 Jun 2020 15:11)
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