Background: Broca’s aphasia is a type of aphasia mostly caused by stroke. One of the most common deficits in this kind of aphasia is DYSPROSODY which can cause disruption in patients' communications. In this study, we examined DYSPROSODY in patients with Broca’s aphasia.Methods: 10 patients with Broca’s aphasia and 10 normal subjects were selected from speech therapy clinics and rehabilitation centers in Isfahan city, Iran. After recording patients’ voices, the data were analyzed using Praat software in laboratory of the University of Isfahan. The spectrum of each word was analyzed accurately; so that the vowel duration, intensity, and fundamental frequency (f0) of each word were extracted. Findings: Duration of /a/ was significantly longer in patients than normal people. Vowels preceding voiced stop consonants were found to be longer compared to those preceding voiceless stop sounds. The patients demonstrated a lower degree of performance in f0, and a higher maximum peak intensity compared to the control group. The effects of age in f0, intensity, and /a/ duration were significant but nonlinear.Conclusion: In this study, we checked the DYSPROSODY in Iranian patients Brocas' a aphasia using Praat software. The result of our study can cause changes in knowledge about speech pathology and improving speech deficits in these patients.

DYSPROSODY is a disorder of speech production in which aphasic patients are not able to apply the prosodic cues correctly. Prosody is also an essential cue for the perception of spoken language. The present study, an experimental research, aimed at exploring the perception of intonation contours in Persian-speaking Broca Aphasics. The participants of this study included three Persian-speaking males who were selected by simple and purposeful sampling method from patients directed to the speech therapy unit in Ghaem Educational, Research and Treatment Centre of Mashhad. The ability of Broca Aphasics to comprehend intonation contours was assessed via Persian adapted Comprehension Test of Intonation Contours in Aphasia. The findings of the research showed that the Broca Aphasic individuals were able to distinguish the three intonation contours (neutral declaratives, yes-no questions, and narrow focus) tested; however, they demonstrated a poorer performance than the control group. Thus, generally speaking, the present study confirms that the perception of intonation contours and consequently the phonological abilities remain virtually intact. The present study confirms that the perception of intonation contours and consequently the phonological abilities remain virtually intact.