Periodic fluctuations in reading times reflect multi-word-chunking

Abstract Memory is fleeting. To avoid information loss, humans need to recode verbal stimuli into chunks of limited duration, each containing multiple words. Chunk duration may also be limited neurally by the wavelength of periodic brain activity, so-called neural oscillations. While both cognitive...

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Main Authors: Chia-Wen Lo, Mark Anderson, Lena Henke, Lars Meyer
Format: Article
Language:English
Published: Nature Portfolio 2023-10-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-023-45536-y
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author Chia-Wen Lo
Mark Anderson
Lena Henke
Lars Meyer
author_facet Chia-Wen Lo
Mark Anderson
Lena Henke
Lars Meyer
author_sort Chia-Wen Lo
collection DOAJ
description Abstract Memory is fleeting. To avoid information loss, humans need to recode verbal stimuli into chunks of limited duration, each containing multiple words. Chunk duration may also be limited neurally by the wavelength of periodic brain activity, so-called neural oscillations. While both cognitive and neural constraints predict some degree of behavioral regularity in processing, this remains to be shown. Our analysis of self-paced reading data from 181 participants reveals periodic patterns at a frequency of $$\sim$$ ∼  2 Hz. We defined multi-word chunks by using a computational formalization based on dependency annotations and part-of-speech tags. Potential chunk outputs were first generated from the computational formalization and the final chunk outputs were selected based on normalized pointwise mutual information. We show that behavioral periodicity is time-aligned to multi-word chunks, suggesting that the multi-word chunks generated from local dependency clusters may minimize memory demands. This is the first evidence that sentence processing behavior is periodic, consistent with a role of both memory constraints and endogenous electrophysiological rhythms in the formation of chunks during language comprehension.
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spelling doaj.art-5a8af9248d1d4fecb36311605d78654a2023-10-29T12:23:51ZengNature PortfolioScientific Reports2045-23222023-10-0113111010.1038/s41598-023-45536-yPeriodic fluctuations in reading times reflect multi-word-chunkingChia-Wen Lo0Mark Anderson1Lena Henke2Lars Meyer3Research Group Language Cycles, Max Planck Institute for Human Cognitive and Brain SciencesNorwegian Computing CenterResearch Group Language Cycles, Max Planck Institute for Human Cognitive and Brain SciencesResearch Group Language Cycles, Max Planck Institute for Human Cognitive and Brain SciencesAbstract Memory is fleeting. To avoid information loss, humans need to recode verbal stimuli into chunks of limited duration, each containing multiple words. Chunk duration may also be limited neurally by the wavelength of periodic brain activity, so-called neural oscillations. While both cognitive and neural constraints predict some degree of behavioral regularity in processing, this remains to be shown. Our analysis of self-paced reading data from 181 participants reveals periodic patterns at a frequency of $$\sim$$ ∼  2 Hz. We defined multi-word chunks by using a computational formalization based on dependency annotations and part-of-speech tags. Potential chunk outputs were first generated from the computational formalization and the final chunk outputs were selected based on normalized pointwise mutual information. We show that behavioral periodicity is time-aligned to multi-word chunks, suggesting that the multi-word chunks generated from local dependency clusters may minimize memory demands. This is the first evidence that sentence processing behavior is periodic, consistent with a role of both memory constraints and endogenous electrophysiological rhythms in the formation of chunks during language comprehension.https://doi.org/10.1038/s41598-023-45536-y
spellingShingle Chia-Wen Lo
Mark Anderson
Lena Henke
Lars Meyer
Periodic fluctuations in reading times reflect multi-word-chunking
Scientific Reports
title Periodic fluctuations in reading times reflect multi-word-chunking
title_full Periodic fluctuations in reading times reflect multi-word-chunking
title_fullStr Periodic fluctuations in reading times reflect multi-word-chunking
title_full_unstemmed Periodic fluctuations in reading times reflect multi-word-chunking
title_short Periodic fluctuations in reading times reflect multi-word-chunking
title_sort periodic fluctuations in reading times reflect multi word chunking
url https://doi.org/10.1038/s41598-023-45536-y
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AT markanderson periodicfluctuationsinreadingtimesreflectmultiwordchunking
AT lenahenke periodicfluctuationsinreadingtimesreflectmultiwordchunking
AT larsmeyer periodicfluctuationsinreadingtimesreflectmultiwordchunking