Document Detail


Lateralisation of non-metric rhythm.
MedLine Citation:
PMID:  21424982     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
There are contradictory results on lateralisation and localisation of rhythm processing. Our aim was to test whether there is a hemispheric dissociation of metric and non-metric rhythm processing. We created a non-metric rhythm stimulus without a sense of metre and we measured brain activities during passive rhythm perception. A total of 11 healthy, right-handed, native female Hungarian speakers aged 21.3 ± 1.1 were investigated by functional magnetic resonance imaging (fMRI) using a 3T MR scanner. The experimental acoustic stimulus consisted of comprehensive sentences transformed to Morse code, which represent a non-metric rhythm with irregular perceptual accent structure. Activations were found in the right hemisphere, in the posterior parts of the right-sided superior and middle temporal gyri and temporal pole as well as in the orbital part of the right inferior frontal gyrus. Additional activation appeared in the left-sided superior temporal region. Our study suggests that non-metric rhythm with irregular perceptual accents structure is confined to the right hemisphere. Furthermore, a right-lateralised fronto-temporal network extracts the continuously altering temporal structure of the non-metric rhythm.
Authors:
R A Horvath; A Schwarcz; M Aradi; T Auer; N Feher; N Kovacs; T Tenyi; C Szalay; G Perlaki; G Orsi; S Komoly; T Doczi; F G Woermann; Cs Gyimesi; J Janszky
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-3-21
Journal Detail:
Title:  Laterality     Volume:  -     ISSN:  1464-0678     ISO Abbreviation:  -     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-3-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9609064     Medline TA:  Laterality     Country:  -    
Other Details:
Languages:  ENG     Pagination:  1-16     Citation Subset:  -    
Affiliation:
Epilepsy Center Bethel, Bielefeld, Germany.
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