Research Repository

Language lateralization of hearing native signers: A functional transcranial Doppler sonography (fTCD) study of speech and sign production

Gutierrez-Sigut, Eva and Daws, Richard and Payne, Heather and Blott, Jonathan and Marshall, Chloë and MacSweeney, Mairéad (2015) 'Language lateralization of hearing native signers: A functional transcranial Doppler sonography (fTCD) study of speech and sign production.' Brain and Language, 151. 23 - 34. ISSN 0093-934X

[img]
Preview
Text
Language lateralization of hearing native signers: A functional transcranial Doppler sonography (fTCD) study of speech and sign production.pdf - Published Version
Available under License Creative Commons Attribution.

Download (1MB) | Preview

Abstract

Neuroimaging studies suggest greater involvement of the left parietal lobe in sign language compared to speech production. This stronger activation might be linked to the specific demands of sign encoding and proprioceptive monitoring. In Experiment 1 we investigate hemispheric lateralization during sign and speech generation in hearing native users of English and British Sign Language (BSL). Participants exhibited stronger lateralization during BSL than English production. In Experiment 2 we investigated whether this increased lateralization index could be due exclusively to the higher motoric demands of sign production. Sign naïve participants performed a phonological fluency task in English and a non-sign repetition task. Participants were left lateralized in the phonological fluency task but there was no consistent pattern of lateralization for the non-sign repetition in these hearing non-signers. The current data demonstrate stronger left hemisphere lateralization for producing signs than speech, which was not primarily driven by motoric articulatory demands.

Item Type: Article
Uncontrolled Keywords: fTCD, Language lateralization, Language production, Sign language, Phonological fluency, Semantic fluency, Hearing native signers
Divisions: Faculty of Science and Health > Psychology, Department of
Depositing User: Elements
Date Deposited: 28 Aug 2019 13:30
Last Modified: 28 Aug 2019 14:15
URI: http://repository.essex.ac.uk/id/eprint/25214

Actions (login required)

View Item View Item