Abstract：
:Just as words can rhyme, the signs of a signed language can share structural properties, such as location. Linguistic description at this level is termed phonology. We report that a left-lateralised fronto-parietal network is engaged during phonological similarity judgements made in both English (rhyme) and British Sign Language (BSL; location). Since these languages operate in different modalities, these data suggest that the neural network supporting phonological processing is, to some extent, supramodal. Activation within this network was however modulated by language (BSL/English), hearing status (deaf/hearing), and age of BSL acquisition (native/non-native). The influence of language and hearing status suggests an important role for the posterior portion of the left inferior frontal gyrus in speech-based phonological processing in deaf people. This, we suggest, is due to increased reliance on the articulatory component of speech when the auditory component is absent. With regard to age of first language acquisition, non-native signers activated the left inferior frontal gyrus more than native signers during the BSL task, and also during the task performed in English, which both groups acquired late. This is the first neuroimaging demonstration that age of first language acquisition has implications not only for the neural systems supporting the first language, but also for networks supporting languages learned subsequently.
journal_name
Neuroimagejournal_title
NeuroImageauthors
MacSweeney M,Waters D,Brammer MJ,Woll B,Goswami Udoi
10.1016/j.neuroimage.2007.12.047subject
Has Abstractpub_date
2008-04-15 00:00:00pages
1369-79issue
3eissn
1053-8119issn
1095-9572pii
S1053-8119(07)01168-8journal_volume
40pub_type
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