Effects of voice onset time and place of articulation on perception of dichotic Turkish syllables

ESKİCİOĞLU E., TAŞLICA S., GÜDÜCÜ Ç., Oniz A., ÖZGÖREN M.

Speech Communication, cilt.167, 2025 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 167
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1016/j.specom.2024.103170
  • Dergi Adı: Speech Communication
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, Communication & Mass Media Index, Communication Abstracts, Compendex, INSPEC, Linguistic Bibliography, Linguistics & Language Behavior Abstracts, Metadex, Psycinfo, zbMATH, Civil Engineering Abstracts
  • Anahtar Kelimeler: Dichotic listening, Hemispheric specialization, Place of articulation, Stimulus dominance, Voice onset time
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

Dichotic listening has been widely used in research investigating the hemispheric specialization of language. A common finding is the Right-ear Advantage (REA), reflecting left hemisphere speech sound perception specialization. However, acoustic/phonetic features of the stimuli, such as voice onset time (VOT) and place of articulation (POA), are known to affect the REA. This study investigates the effects of these features on the REA in the Turkish language, whose language family differs from the languages typically used in previous VOT and POA studies. Data of 95 right-handed participants with REA, which was defined as reporting at least one more correct right than left ear response, were analyzed. Prevoiced consonants were dominant compared with consonants with long VOT and resulted in increased REA. Velar consonants were dominant compared with other consonants. Velar and alveolar consonants resulted in higher REA than bilabial consonants. Lateralization and error rates were lower when POA, but not VOT, of the consonants differed. Error responses were mostly determined by the VOT feature of the consonant presented to the right ear. To conclude, the effects of VOT and PoA on the hemispheric asymmetry in Turkish have been spotted by a behavioral approach. Further neuroimaging or electrophysiologic investigations are needed to validate and shed light into the underlying mechanisms of VOT and PoA effects during the DL test.