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Published on: September 5, 2019
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Serial and syntactic processing in the visual analysis of multi-digit numbers.
Dror Dotan1, Ofir Eliahou1, Sharon Cohen1
1Mathematical Thinking Lab, School of Education and School of Neuroscience, Tel Aviv University, Tel Aviv 6997801, Israel.
Summary
Adults process digit strings serially from left to right. A model suggests number analysis is specialized, with enhanced encoding for 0 and 1 due to their system importance.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Visual Perception
Background:
- Letter and digit string visual analysis involve separate cognitive processes.
- These processes may differ qualitatively, encoding number- or word-specific information.
Purpose of the Study:
- To investigate the hypothesis of qualitatively different visual analysis for numbers versus words.
- To further elucidate the cognitive mechanisms underlying the visual analysis of digit strings.
Main Methods:
- Adult participants performed a read-aloud task with multi-digit strings under brief visual presentation.
- Performance accuracy was analyzed based on digit position, visual similarity, and digit identity.
Main Results:
- Digit string processing occurred serially, from left to right, with better performance for left-side digits.
- Visually similar digits increased errors, often migrating to adjacent positions.
- Digits 0 and 1 were encoded better than 2-9, and 2-9 were identified better adjacent to 0 or 1.
Conclusions:
- A model of visual digit string analysis was proposed, involving imperfect detectors with information leakage and a compensatory inhibition mechanism.
- This mechanism shows stronger inhibition for 0 and 1, reflecting their foundational role in the number system.
- The findings support a number-specific visual analyzer, contributing to the separation of number and word visual processing in the brain.
Keywords:
CrowdingNumber readingNumber syntaxNumbers versus wordsSerial and parallel processingVisual analysisMore Related Videos
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