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Showing 3 results for Pitch

Experimental Applications of Antagonistic Tests in Speech Pathology

Reza Nili-Pour, Leyli Hatami-Zadeh, Abolfazl Salehi,
Volume 5, Issue 4 (1-2005)

Abstract

Objective: The main aim of this research was to set up Persian stimuli for diagnostic experimental analysis of speech in order to measure Nasality and Motor Speech Profile by two Speech Lab Systems: SNORS + & VISIPITCH III in native speakers of Persian.

Materials & Methods: The linguistic stimuli of the two lab systems were standardized in accordance with the structural properties of Persian. Two groups of subjects (n=46) with an age range of 19 to 37 years were selected to test the reliability of the experimental analysis of the Persian stimuli.

Results: Based on the results the present linguistic stimuli can be used to measure nasality in SNORS + with standard deviation of %5 and MSP in VISIPITCH III with p=0 and STD=33.06 and mean of 38.165.

Conclusion: Based on the statistical analysis of the present Persian stimuli¡ the data in both lab systems can be used to measure Nasality and Motor Speech Profile in the native speakers of Persian.

The Effect of Pitch and Loudness levels of Phonation on Glottal Closure Pattern in People with Normal Voice

Seyyedeh Maryam Khoddami, Azar Mehri, Yunes Jahani ,
Volume 12, Issue 4 (1-2012)

Abstract

Objective: Glottal closure pattern is the most important stroboscopic sign for judgment about proper function of laryngeal function. Recent researches have suggested that complete glottal closure is not only normal glottal closure pattern. This research is aimed to investigate the closure pattern in normal subjects and the effect of phonation characteristics on it.

Materials & Methods: In this cross-sectional and description- analytical study, 80 people (58 females & 22 males) were selected by random from 218 students. After taking history, perceptual and voice self-assessment, those were selected that the assessments showed do not have any voice problems. Then videostroboscopic examination was performed and recorded during producing /i/ in habitual, high, low, loud and soft levels of phonation. Glottal closure patterns were analyzed and compared in different phonation in males and females by Fisher test.

Results: In general, complete closure was the most frequent pattern and Y posterior chink was the second one. The results revealed significant difference between male and female (P<0.001) and different phonation levels including habitual, high, low, loud and soft (P<0.001) in glottal closure pattern. Moreover, significant difference was observed in different levels of pitch in females (P<0.001) and in difference levels of loudness in males (P<0.001).

Conclusion: Incomplete glottal closure patterns, particularly Y posterior chink are not unusual findings in normal voice. Alternation in phonation levels can change glottal closure pattern significantly, therefore all of the phonation levels should be assessed in videostroboscopic examination, although it is not in the same manner in males and females

Investigating the Effects of Pitch Discrimination-based Rehabilitation on Indices and Results of Diagnostic Tests of Children Suspected of Auditory Processing Disorder

Yones Lotfi, Mr. Mohammadreza Parhizgar, Doctor Afsaneh Doosti, Doctor Enayatollah Bakhshi,
Volume 25, Issue 2 (10-2024)

Abstract

Objective Auditory processing disorder (APD) tests, based on the deviation of results from standard benchmarks, can distinguish children suspected of having APD. Some of these tests directly relate to the ability to discriminate sound pitch, while others may be indirectly affected. Accordingly, this study investigates the impact of pitch discrimination-based rehabilitation on diagnostic indices of APD tests.
Materials & Methods In this study, we selected 19 children suspected of APD who were identified based on tests of pitch pattern, dichotic digits, and monaural selective auditory attention as the intervention group. These children received pitch discrimination-based training, for about three months, two to three sessions a week, each session up to 1 h. After completing the rehabilitation phases, diagnostic tests were administered again. We also selected 26 children with similar diagnostic criteria for APD as the control group. No intervention was applied to this group, and after a comparable period to the intervention group, diagnostic tests were re-administered. The results before and after the interventions were compared within the intervention group and with the 26 children in the control group.
Results The rehabilitation showed significant improvements in the pitch pattern and monaural selective auditory attention tests. In the monaural selective auditory attention test, significant improvements were observed in both ears (P=0.001). In the pitch pattern test, effective improvements were also observed for both ears (P=0.001). The effects were such that nearly 37% of children suspected of APD, based on the diagnostic criteria used in the study, no longer met the criteria for this disorder. Hence, if the same tests are re-administered to them, these children will be diagnosed as having no auditory processing disorder.
Conclusion Discrimination-based rehabilitation impacts the results of APD tests. Accordingly, some children who are classified as suspected auditory processing disorder with such tests, are removed from this subgroup after the intervention.

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