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Verfasst von:Benner, Jan [VerfasserIn]   i
 Wengenroth, Martina [VerfasserIn]   i
 Schneider, Peter [VerfasserIn]   i
Titel:Prevalence and function of Heschl’s gyrus morphotypes in musicians
Verf.angabe:Jan Benner, Martina Wengenroth, Julia Reinhardt, Christoph Stippich, Peter Schneider, Maria Blatow
E-Jahr:2017
Jahr:10 April 2017
Umfang:17 S.
Fussnoten:Gesehen am 12.04.2018
Titel Quelle:Enthalten in: Brain structure & function
Ort Quelle:Berlin : Springer, 2007
Jahr Quelle:2017
Band/Heft Quelle:222(2017), 8, Seite 3587-3603
ISSN Quelle:1863-2661
Abstract:Morphological variations of the first transverse Heschl’s gyrus (HG) in the human auditory cortex (AC) are common, yet little is known about their functional implication. We investigated individual morphology and function of HG variations in the AC of 41 musicians, using structural and functional magnetic resonance imaging (fMRI) as well as magnetoencephalography (MEG). Four main morphotypes of HG were (i) single HG, (ii) common stem duplication (CSD), (iii) complete posterior duplication (CPD), and (iv) multiple duplications (MD). The vast majority of musicians (90%) exhibited HG multiplications (type ii-iv) in either one (39%) or both (51%) hemispheres. In 27% of musicians, MD with up to four gyri were found. To probe the functional contribution of HG multiplications to auditory processing we performed fMRI and MEG with auditory stimulation using analogous instrumental tone paradigms. Both methods pointed to the recruitment of all parts of HG during auditory stimulation, including multiplications if present. FMRI activations extended with the degree of HG gyrification. MEG source waveform patterns were distinct for the different types of HG: (i) hemispheres with single HG and (ii) CSD exhibited dominant N1 responses, whereas hemispheres with (iii) CPD and (iv) MD exhibited dominant P1 responses. N1 dipole amplitudes correlated with the localization of the first complete Heschl’s sulcus (cHS), designating the most posterior anatomical border of HG. P2 amplitudes were significantly higher in professional as compared to amateur musicians. The results suggest that HG multiplications occur much more frequently in musicians than in the general population and constitute a functional unit with HG.
DOI:doi:10.1007/s00429-017-1419-x
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext ; Verlag: http://dx.doi.org/10.1007/s00429-017-1419-x
 Volltext: https://link.springer.com/article/10.1007/s00429-017-1419-x
 DOI: https://doi.org/10.1007/s00429-017-1419-x
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:1571942718
Verknüpfungen:→ Zeitschrift

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