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Related Experiment Video

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Lexical Decision Task for Studying Written Word Recognition in Adults with and without Dementia or Mild Cognitive Impairment

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Published on: June 25, 2019

Word and object recognition during reading acquisition: MEG evidence.

Sendy Caffarra¹, Clara D Martin², Mikel Lizarazu¹

¹BCBL, Basque Center on Cognition, Brain and Language, Mikeletegi 69, Donostia 20009, Spain.

Developmental Cognitive Neuroscience

|January 26, 2017

Summary

Learning to read reshapes children's brains beyond language processing. Neural responses to visual objects also change, indicating a broad impact of reading acquisition on cognitive development.

Keywords:

MEG Object recognition Reading acquisition Speech processing Visual word recognition

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Published on: October 18, 2018

Area of Science:

Neuroscience
Developmental Psychology
Cognitive Science

Background:

Adult studies suggest reading impacts non-linguistic brain processes.
Generalizability of these findings to reading development in children remains unclear.
Understanding neural reorganization during childhood reading acquisition is crucial.

Purpose of the Study:

To investigate how neural responses to verbal and nonverbal stimuli change as children learn to read.
To determine the extent of neural reorganization in visual word and object processing during reading development.
To explore potential non-language-specific effects of reading acquisition on the brain.

Main Methods:

Magnetoencephalography (MEG) data collected from thirty Basque children aged 4-8 years.
Stimuli included written words, spoken words, and visual objects, compared against scrambled counterparts.
Analysis focused on evoked fields and their changes with reading performance and age.

Main Results:

Visual word processing showed increased left posterior and temporal activations correlating with improved reading performance.
Spoken word processing elicited greater left temporal responses, without a clear link to reading expertise.
Visual object recognition showed bilateral posterior activation, with increased left hemisphere involvement as reading errors decreased.

Conclusions:

Learning to read reorganizes neural responses not only to written words but also to visual objects.
Reading acquisition strengthens verbal decoding of visual information, impacting non-language-specific processing.
These findings suggest a broad, non-language-specific impact of reading on children's neural mechanisms.