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:: Volume 17, Issue 2 (19 2009) ::
aud 2009, 17(2): 25-32 Back to browse issues page
Effect of voicing on spacial indices of consonants
Arash Bohlooli 1, Zahra Agharasouli 2, Farhad Torabinezhad 2, Mohammad Reza Keyhani 3
1- Speech therapy clinic, General Rehabilitation Center of Red Crescent Society of east Azerbaijan, Ir
2- Department of Speechtherapy, Faculty of Rehabilitation Sciences, Iran University of Medical Science
3- Department of Biostatistics, Faculty of Rehabilitation Sciences, Iran University of Medical Science
Abstract:   (5939 Views)

Background and Aim: For better using of electropalatography in assessment and treatment procedures it is important to know normal tongue to palate contact patterns. Several factors can change consonant&aposs articulatory patterns. One of them is voicing. In addition to determine amount of spacial indices of studied consonants, this research aimed to study tongue behavior related to change in voicing.
Materials and Methods: This is a descriptive analytic study. Consonant linguapalatal contacts were studied using reading electropalatography by recording 4 normal Persian speaking adults (aged between 21-25) repeating CVCV syllables (C=/s,z,t,d/, V=/a/) ten times. Contact patterns were examined for total number of electrodes contacted and other spatial indices. Comparisons were made across voicing contrast.
Results: In this study amount of spacial indices of studied consonants determined. It&aposs found that there was not significant difference between voiced and voiceless cognate according to number of contact and other special indices.
Conclusion: The findings of this study are in according with previous studies in other languages about the effect of voicing upon linguapalatal contact patterns. Difference in voicing does not make clear change in spacial indices related to tongue contact pattern. Compared to other parts, Tip of the tongue seem to be more sensitive for change in voicing and oral air pressure.

Keywords: Palatography, spacial indices, Voicing, Linguapalatal contact patterns
Full-Text [PDF 170 kb]   (1805 Downloads)    
Type of Study: Research |
Received: 2008/03/24 | Accepted: 2009/03/13 | Published: 2013/10/12
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Volume 17, Issue 2 (19 2009) Back to browse issues page
شنوایی شناسی - دانشگاه علوم پزشکی تهران Bimonthly Audiology - Tehran University of Medical Sciences
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