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Verbal repetition engages a bilateral fronto-temporo-parietal network with left-hemispheric dominance

Verbal repetition engages a bilateral fronto-temporo-parietal network with left-hemispheric…
Photo by National Cancer Institute / Unsplash
Key Takeaway
Consider that verbal repetition engages a bilateral network with left-hemispheric dominance, but findings are limited by study heterogeneity.

This is a meta-analysis of neuroimaging experiments in healthy adults, synthesizing neural patterns of verbal repetition. The authors found that verbal repetition engages a robust, bilaterally distributed fronto-temporo-parietal network encompassing auditory-phonological regions of the superior temporal cortex, sensorimotor cortices of the precentral and postcentral gyri, and medial frontal motor regions including the SMA and the preSMA. Hemispheric lateralization showed a predominant left-hemispheric contribution across conditions, with a stronger leftward bias for pseudoword than for word repetition. Neural engagement differed by stimulus type: pseudoword repetition involved greater involvement of auditory associative, premotor, and subcortical regions, while word repetition showed preferential engagement of primary auditory and medial frontal motor regions. The authors note methodological heterogeneity across studies as a key limitation. These findings may have diagnostic relevance in acquired and developmental language disorders, but the evidence is not causal and should be interpreted cautiously.

Study Details

Study typeMeta analysis
Sample sizen = 380
EvidenceLevel 1
PublishedMay 2026
View Original Abstract ↓
Verbal repetition involves transforming heard speech into articulatory motor output and constitutes a core language function integrating receptive and expressive processes within tight temporal constraints. This integrative nature underlies its importance for language acquisition and learning and accounts for its diagnostic relevance in acquired and developmental language disorders. Despite extensive investigation, the consistent neural architecture supporting verbal repetition has remained insufficiently established due to methodological heterogeneity across studies. Here, we conducted a coordinate-based meta-analysis using Activation Likelihood Estimation (ALE) on 27 neuroimaging experiments (380 participants; 440 activation foci) to identify brain regions consistently engaged during verbal repetition in healthy adults, to compare word and pseudoword repetition, and to assess hemispheric lateralization. Across all conditions, verbal repetition consistently engaged a robust, bilaterally distributed fronto-temporo-parietal network encompassing auditory-phonological regions of the superior temporal cortex, sensorimotor cortices of the precentral and postcentral gyri, and medial frontal motor regions including the SMA and the preSMA. Lateralization analyses revealed a predominant left-hemispheric contribution across conditions, with a stronger leftward bias for pseudoword than for word repetition, despite largely bilateral engagement. Direct contrasts indicated stimulus-dependent modulation within this partially shared dorsal network: pseudoword repetition showed greater involvement of auditory associative, premotor, and subcortical regions, whereas word repetition preferentially engaged primary auditory and medial frontal motor regions. Together, these findings provide a comprehensive overview of the neural systems supporting verbal repetition, highlighting a shared dorsal auditory-motor network that is flexibly modulated as a function of stimulus familiarity.
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