Musical training effect on hemispheric lateralization of language among different handedness groups: an fMRI study
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Musical training effect on hemispheric lateralization of language among different handedness groups: an fMRI studyAutoria
Tutor/Supervisor; Universitat.Departament
Ávila Rivera, César; Universitat Jaume I. Departament de Psicologia Bàsica, Clínica i PsicobiologiaData de publicació
2017-06-19Editor
Universitat Jaume IResum
Since right hemisphere sensorimitor network (planum temporale, arcuate fasciculus and
ventral premotor cortex) was described for the first time as one of the brain bases of music
processing, evidence of structural ... [+]
Since right hemisphere sensorimitor network (planum temporale, arcuate fasciculus and
ventral premotor cortex) was described for the first time as one of the brain bases of music
processing, evidence of structural (auditory cortex and arcuate fasciculus) and functional
(resting-state) differences in musicians have being reported in the last years. Given the
parallelism of this right sensorimotor network with the left sensorimotor network (responsible
for language processing in the vast majority of the population), we wonder if musical training
can not only provoke a greater development of this brain circuit, but also a greater participation
in language processing tasks. To test this hypothesis, we asssessed hemispheric lateralization of
language using fMRI during a verb generation task in four different groups of participants:
right-handed nonmusicians (n = 20), righ-handed musicians (n = 18), left-handed nonmusicians
(n = 20) and left-handed musicians (n = 34). Our results show that left-handed musicians are
four times more likely to show atypical (predominantly right) hemispheric lateralizations of
language than left-handed nonmusicians, and six times more likely than right-handed musicians.
We could not find an effect of musical training in language lateralization among right-handers;
this suggests that whatever effect musical training could have in language lateralization, it
seems to be modulated by handedness. Implications of these findings for language skills
training, rehabilitation programs and selection of musicians are discussed. [-]
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Treball Final de Grau en Psicologia. Codi: PS1048. Curs acadèmic: 2016/2017
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