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Author Spotlight: Deciphering the Cognitive and Neural Mechanisms of Gesture in Communication

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Sign and Speech Share Partially Overlapping Conceptual Representations.

Samuel Evans¹, Cathy J Price², Jörn Diedrichsen³

¹Institute of Cognitive Neuroscience, UCL, Alexandra House, 17-19 Queen Square, London WC1N 3AZ, UK; Department of Psychology, University of Westminster, 115 New Cavendish Street, London W1W 6UW, UK.

Current Biology : CB

|November 1, 2019

Summary

Conceptual knowledge is influenced by language. This study shows semantic categories are shared between spoken English and British Sign Language, but individual words are not, indicating language subtly filters cognition.

Keywords:

BSL bilingualism brain imaging conceptual representations fMRI semantics sign language speech

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Area of Science:

Cognitive Science
Neuroscience
Linguistics

Background:

Conceptual knowledge is crucial for cognition, but its relationship with language remains debated.
Previous studies suggest conceptual representations are modality-independent, but this may reflect shared spoken language representations.
Bilingual studies indicate language independence, but primarily in spoken language users.

Purpose of the Study:

To investigate the influence of language modality and bilingualism on conceptual representations.
To compare semantic representations of spoken British English and British Sign Language in hearing bilinguals.

Main Methods:

Examined semantic representations elicited by spoken British English and British Sign Language.
Focused on hearing individuals who are early bilinguals in both sign and speech.
Compared representations for semantic categories versus individual words/signs.

Main Results:

Semantic category representations were found to be shared between sign and speech.
Representations for individual spoken words and signs were not shared.
Evidence suggests partially shared conceptual representations for sign and speech.

Conclusions:

Language acts as a subtle filter influencing conceptual understanding and interaction with the world.
Conceptual representations are not entirely modality or language independent.
Findings highlight the interplay between modality, bilingualism, and semantic cognition.