Türkçe Konuşma Dilinde Duygusal Prozodi Ve Sözel Birleşenlerin İncelenmesine Yönelik Nörodilbilimsel Bir İnceleme
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Date
2018-06-08Author
Bayazıt, Zeynep Zeliha
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Emotional prosody which is one of the communicative elements of prosody and
transfering emotions to spoken language, has a key role implication of timbre
component, mood sense, and prosodic content. For this reason, it serves a highly
important functions for sense, the meaning to be reflected, and ability to provide effective
coomunication. Due to its crucial role in verbal communication, it has a critical
relationship within many disciplines such as linguistics, medicine, computer sciences,
etc. Thus the knowledge of how the prosody sequence works in the brain will contribute
to both language development and foreign language teaching as well as clinical
evaluation of individuals with verbal communication difficulty. From this point of view, the
current study takes an interdisciplinear perspective to address the investigation of brain
localization of emotional prosody and verbal compenents of spoken Turkish. In
accordance with this purpose, the fNIRS technique was used. fNIRS has recently
become popular as an emerging optical imaging technique for studying human brain
function. However, it is still not widespread compared to other neuroimaging techniques.
This study was conducted on both 20 healthy native speakers of Turkish and English.
Emotional prosody production and auditory stimulus tasks were performed to determine
the brain localization of emotional prosody and verbal components of the Turkish spoken
language. Participants were recorded by using fNIRS while performing emotional
prosody production and auditory stimulus tasks to measure the brain activation.
Our resuIts showed superior temporal gyrus, middle temporal gyrus, which includes
primary and secondary auditory cortex, and superior temporal cortex, which comprises
of temporal sulcus, were strongly activated by prosodies irrespective of emotional
valence. Our findings also demonstrated left inferior frontal gyrus which comprises of
pars triangularis; (Broadmann Area 45) and the frontal eye field (Broadmann Area 8)
were significantly activated for happy, angry, and fearful prosodies in spoken Turkish.
This study, which takes a leading part both in terms of methodology and neurolinguistics
in Turkish literature, reveals that the emotional prosody of spoken Turkish is totally
related to the language system and it is processed bileterally in the cerebral
hemispheres.