Papers by Hamid Jalilvand
Tinnitus is a conscious attended awareness perception of sourceless sound. Widespread theoretical... more Tinnitus is a conscious attended awareness perception of sourceless sound. Widespread theoretical and evidence-based neurofunctional and psychological models have tried to explain tinnitus-related distress considering the influence of psychological and cognitive factors. However, tinnitus models seem to be less focused on causality, thereby easily misleading interpretations. Also, they may be incapable of individualization. This study proposes a Conceptual Cognitive Framework (CCF) providing insight into cognitive mechanisms involved in the predisposition, precipitation, and perpetuation of tinnitus and consequent cognitive-emotional disturbances. The current CCF for tinnitus relies on evaluative conditional learning and appraisal, generating negative valence (emotional value) and arousal (cognitive value) to annoyance, distress, and distorted perception. The suggested methodology is well-defined, reproducible, and accessible, which can help foster future high-quality clinical datab...
Journal of Audiology and Otology, 2021
Background and Objectives: The speech-in-noise test is typically performed using an audiometer. T... more Background and Objectives: The speech-in-noise test is typically performed using an audiometer. The results of the digit-in-noise recognition (DIN) test may be influenced by the flat frequency response of free-field audiometry and frequency of the hearing aid fit based on fitting rationale. This study aims to investigate the DIN test in unaided and aided conditions. Subjects and Methods: Thirty four adults with moderate and severe sensorineural hearing loss (SNHL) participated in the study. The signal-to-noise ratio (SNR) for 50% of the DIN test was obtained in the following two conditions: 1) the unaided condition, performed using an audiometer in a free field; and 2) aided condition, performed using a hearing aid with an unvented individual earmold that was fitted based on NAL-NL2.Results: There was a statistically significant elevation in the mean SNR for the severe SNHL group in both test conditions when compared with that of the moderate SNHL group. In both groups, the SNR for ...
Introduction: The Acceptable Noise Level (ANL) evaluates the willingness of a listener to hear a ... more Introduction: The Acceptable Noise Level (ANL) evaluates the willingness of a listener to hear a continuous speech in the presence of background noise. ANL is related to some variables. Although many studies were accomplished on the relationship between ANL and hearing aid satisfaction, no study was found for the usage of ANL as the predictor of initial hearing aid acquisition. Therefore, the current study aimed at determining the relationship between the initial acceptance of hearing aid and individual's ANL. The study also aimed at quantifying human potentials for what is out of their personal control, as well as assessing their commitment in the actions that improve and enrich their quality of life. Methods: A total of 60 patients with hearing loss who were the candidate for wearing hearing aid were participated. ANLs were measured and comprehensive hearing aid counseling was given to the patients. Patients were free to accept or reject using hearing aids. The Pearson correla...
Iranian Journal of Child Neurology, 2019
Objective In the auditory system, tinnitus and superior speech perception in noise are examples o... more Objective In the auditory system, tinnitus and superior speech perception in noise are examples of negative and positive plasticity that can result from sensory neural hearing loss and life experiences dealing with more complex stimuli and learning, respectively. The main objective of this study was to determine the relationship between acceptable noise level (ANL) values and perceptual learning in individuals exposed to unavoidable occupational noise. Materials & Methods Here we document a form of plasticity in top-down auditory pathways through the measurement of the acceptable noise level in 60 adults, 27 females and 33 males, with normal hearing (Amiraalam state Hospital, Tehran, Iran 2016). Individuals were assigned to one of two groups: those with and without the occupational experience of speech perception in noise. Results The test group had statistically significant lower acceptable noise level and significantly higher background noise level scores compared with the control...
Background and Aims: Auditory verbal working memory is defined as the ability to learn, retain, a... more Background and Aims: Auditory verbal working memory is defined as the ability to learn, retain, and recall verbal syllables or words. Various factors like age, gender, education, and change in endocrine secretions, such as gonads, can affect the acquisition of memory and learning test scores. In the present study, the effect of menopause on changes in hormonal secretion was studied on women's working memory. Materials and Methods: A descriptive-analytic study was performed on 25 menopause women, aged 50–59, with normal hearing and who had had their menopause during the past two years or more. Sampling method was available sampling which was perfromed using the Persion version of the Rey auditory – verbal test. In order to investigate the status of data distribution we used Shapirovailk test, to examine the relationship between immediate recall and delayed recall and delayed recall, Wilcoxon test was run, to study the correlation between stages 1 to 5, Friedman test was used, and...
Background and Aims: The evaluation of probe microphone is the only gold standard to confirm the ... more Background and Aims: The evaluation of probe microphone is the only gold standard to confirm the performance of hearing aids. In children, due to the fitting positive impact with real ear measurement on the children's communication skills and also considering that children are not able to express their hearing aid functional problems, the importance of the use of real ear measurement is felt more. Therefore, the present study was conducted to determine the difference between hearing aid output fitted by DSL prescriptive targets with approaches of real ear measurement and 2 cc coupler among 37 year-old hearing impaired children to understand the impact of earmold on these measurements. Materials and Methods: In the present descriptive-analytical cross-sectional study, 3-7 year-old hearing impaired children with moderate to profound hearing losses were studied. For children’s assessment, after doing audiometerical tests, the children's hearing aids were planned in accordance w...
Background and Aim: Several studies revealed that motion sickness is among the disorders that usu... more Background and Aim: Several studies revealed that motion sickness is among the disorders that usually occurs with migraine. The aim of the present study was to compare the motion sickness score in vestibular migraine and non-vestibular migraine using the Persian version of Motion Sickness Susceptibility Questionnaire-short form (MSSQ-Short). Materials and Methods: Participants suffering from vestibular migraine and non-vestibular migraine were studied from October 2015 to May 2016. International Classification of Headache Disorder III (beta version) was used for diagnosing the type of migraine, and also MSSQ-Short for earning the score of motion sickness susceptibility. Results: MSSQ-score was obtained to be 16.8±12.85 in vestibular migraine and 11.5±11.38 in nonvestibular migraine. The difference was statistically significant (p=0.044). Conclusion: In vestibular migraine, MSSQ-score was significantly more than that in non-vestibular migraine.
Background and Aim: Understanding emotion is crucial for human social interactions. Amplitude com... more Background and Aim: Understanding emotion is crucial for human social interactions. Amplitude compression in hearing aids affects acoustical characteristics of incoming sound, which is necessary for emotion recognition. The present study investigated this effect(s). Methods: Hearing aid amplitude compression on Persian emotional speech database (ESD) was simulated using MATLAB software. Three types of hearing loss including high tone loss (HTL), low tone loss (LTL), and flat were simulated using three amplification methods, i.e. fast-acting compression (FAC), slow-acting compression (SAC), and linear. Forty normal hearing young adult subjects (aged 20-35 years, mean and SD: 26.98±4.50) with no depression participated in this study. Emotion recognition before and after hearing aid compression simulation was compared statistically using independent t-test considering p<0.05 as the significance level. Results: Fear, sad, angry, and happy emotion recognition are statistically differe...
Auditory and Vestibular Research, 2020
Background and Aim: Tinnitus functional index (TFI) has been introduced as a standard self-assess... more Background and Aim: Tinnitus functional index (TFI) has been introduced as a standard self-assessment questionnaire for the evaluation of tinnitus severity and its negative consequences with enough sensitivity to detect the outcomes of treatment. The purpose of this study was to translate the original tinnitus functional index into Persian and to evaluate its reliability in a military population. Methods: The translation was performed in accordance with the Principles of Good Practice for the Translation and Cultural Adaptation Process for Patient-Reported Outcomes Measures. 32 military and veteran men with tinnitus aged 22−74 years participated in the current study. The participants completed the Persian version of the TFI and the second re-evaluation session was conducted over the telephone 10−14 days later. Both relative and absolute reliability indices were computed. Results: Intraclass correlation coefficient(2,1) with consistency definition for the TFI subscales varied from g...
Auditory and Vestibular Research, 2020
Background and Aim: It is well known that hearing aid fitting is an effective approach to improve... more Background and Aim: It is well known that hearing aid fitting is an effective approach to improve the communication ability of hearingimpaired people. In the past, most of the hearing aids were fitted unilaterally rather than bilaterally. Whereas the unilateral hearing aid fitting improves verbal communication partially, it causes late-onset auditory deprivation. The main aim of this study is to investigate the ANL for each ear among the users with unilateral hearing aid experience. Methods: A total of 23 participants were recruited (14 females, 9 males). The mean age was 74.65 years (ranged from 41 to 83). All subjects had bilateral symmetric sensorineural hearing loss. The most comfortable level (MCL), Background Noise Level (BNL), and acceptable noise level (ANL) were measured for ear with amplification experience and ear without experience. Results: MCL, BNL and ANL in the aided ear was 82.22, 73.48 and 8.74 respectively, in addition in the unaided ear the results for MCL, BNL a...
Journal of Biomedical Physics and Engineering, 2018
Background:Tinnitus known as a central nervous system disorder is correlated with specific oscill... more Background:Tinnitus known as a central nervous system disorder is correlated with specific oscillatory activities within auditory and non-auditory brain areas. Several studies in the past few years have revealed that in the most tinnitus cases, the response pattern of neurons in auditory system is changed due to auditory deafferentation, which leads to variation and disruption of the brain networks.Objective: In this paper, we introduce an approach to automatically distinguish tinnitus individuals from healthy controls based on whole-brain functional connectivity and network analysis. Material and Methods: The functional connectivity analysis was applied to the resting state electroencephalographic (EEG) data of both groups using Weighted Phase Lag Index (WPLI) for various frequency bands in 2-44 Hz frequency range. The classification was performed on graph theoretical measures using support vector machine (SVM) as a robust classification method. Results: Experimental results showed...
Clinical and experimental otorhinolaryngology, Jan 16, 2018
Two main digital signal processing technologies inside the modern hearing aid to provide the best... more Two main digital signal processing technologies inside the modern hearing aid to provide the best conditions for hearing aid users are directionality (DIR) and digital noise reduction (DNR) algorithms. There are various possible settings for these algorithms. The present study evaluates the effects of various DIR and DNR conditions (both separately and in combination) on listening comfort among hearing aid users. In 18 participants who received hearing aid fitting services from the Rehabilitation School of Shahid Beheshti University of Medical Sciences regularly, we applied acceptable noise level (ANL) as our subjective measure of listening comfort. We evaluated both of these under six different hearing aid conditions: omnidirectional-baseline, omnidirectional-broadband DNR, omnidirectional-multichannel DNR, directional, directional-broadband DNR, and directional-multichannel DNR. The ANL results ranged from -3 dB to 14 dB in all conditions. The results show, among all conditions, b...
Clinical and experimental otorhinolaryngology, Jan 10, 2018
Directional microphone technology can enhance the speech intelligibility and listening comfort of... more Directional microphone technology can enhance the speech intelligibility and listening comfort of listeners with hearing impairment. The main aim of this study is to investigate and compare the benefit derived by listeners with severe hearing loss from directional microphone technology with that derived by listeners with moderate hearing loss. The acceptable noise levels (ANLs) of two groups of listeners with moderate or severe hearing impairment (17 subjects in each group) were measured under unaided, omnidirectional-baseline-aided, and directional-aided conditions. Although the absolute ANL of the listeners in the severe hearing loss group was significantly higher than that of the listeners in the moderate hearing loss group, their derived benefit was equivalent to that derived by the listeners in the moderate hearing loss group. ANL and hearing loss degree were significantly related. Specifically, the ANL increased with the severity of hearing loss. Directional microphone technol...
Auditory and Vestibular Research, 2020
Background and Aim: Digits are suitable speech materials for evaluating recognition of speech-in-... more Background and Aim: Digits are suitable speech materials for evaluating recognition of speech-in-noise in clients with the wide range of language abilities. Farsi Auditory Recognition of Digit-in-Noise (FARDIN) test has been developed and validated in learning-disabled children showing dichotic listening deficit. This study was conducted for further validation of FARDIN and to survey the effects of noise type on the recognition performance in individuals with sensory-neural hearing impairment. Methods: Persian monosyllabic digits 1−10 were extracted from the audio file of FARDIN test. Ten lists were compiled using a random order of the triplets. The first five lists were mixed with multi-talker babble noise (MTBN) and the second five lists with speech-spectrum noise (SSN). Signal- to- noise ratio (SNR) varied from +5 to −15 in 5 dB steps. 20 normal hearing and 19 hearing-impaired individuals participated in the current study. Results: Both types of noise could differentiate the ...
His research interests are hearing aid, tinnitus, and vestibular rehabilitation. Introduction: Th... more His research interests are hearing aid, tinnitus, and vestibular rehabilitation. Introduction: The Acceptable Noise Level (ANL) evaluates the willingness of a listener to hear a continuous speech in the presence of background noise. ANL is related to some variables. Although many studies were accomplished on the relationship between ANL and hearing aid satisfaction, no study was found for the usage of ANL as the predictor of initial hearing aid acquisition. Therefore, the current study aimed at determining the relationship between the initial acceptance of hearing aid and individual's ANL. The study also aimed at quantifying human potentials for what is out of their personal control, as well as assessing their commitment in the actions that improve and enrich their quality of life. Methods: A total of 60 patients with hearing loss who were the candidate for wearing hearing aid were participated. ANLs were measured and comprehensive hearing aid counseling was given to the patients. Patients were free to accept or reject using hearing aids. The Pearson correlation was used to assess the relationships among variables, and the independent t test was used to compare data between the groups Results: The analysis revealed a correlation between ANL and the acceptance of hearing aid. ANL means in the subjects who accept and reject hearing aid were 7.83 and 11.73, respectively. Conclusion: The results showed the correlation between lower ANLs and acceptance of hearing aid and also the correlation between higher ANLs and resistance to get hearing aid. Participants who accepted to take hearing aid had lower ANL mean and the ones who refused to take hearing aid had higher ANL mean.
Aud Vestib Res, 2020
Background and Aim: Tinnitus functional index (TFI) has been introduced as a standard self-assess... more Background and Aim: Tinnitus functional index (TFI) has been introduced as a standard self-assessment questionnaire for the evaluation of tinnitus severity and its negative consequences with enough sensitivity to detect the outcomes of treatment. The purpose of this study was to translate the original tinnitus functional index into Persian and to evaluate its reliability in a military population.
Methods: The translation was performed in accordance with the Principles of Good Practice for the Translation and Cultural Adaptation Process for Patient-Reported Outcomes Measures. 32 military and veteran men with tinnitus aged 22−74 years participated in the current study. The participants completed the Persian version of the TFI and the second re-evaluation session was conducted over the telephone 10−14 days later. Both relative and absolute reliability indices were computed. Results: Intraclass correlation coefficient(2,1) with consistency definition for the TFI subscales varied from good to excellent. The agreement between the TFI total scores in the evaluation and re-evaluation using Bland-Altman analysis was acceptable and only one case was not located within the limits of agreement.
Conclusion: Initial evaluation of the Persian version of TFI shows acceptable results in terms of reliability. The evaluation of the Persian TFI in different populations of patients with tinnitus and its validity would facilitate its clinical application.
Keywords: Tinnitus; questionnaire; Persian
Audio Vestibular Research, 2020
Background and Aim: It is well known that hearing aid fitting is an effective approach to improve... more Background and Aim: It is well known that hearing aid fitting is an effective approach to improve the communication ability of hearing-impaired people. In the past, most of the hearing aids were fitted unilaterally rather than bilaterally. Whereas the unilateral hearing aid fitting improves verbal communication partially, it causes late-onset auditory deprivation. The main aim of this study is to investigate the ANL for each ear among the users with unilateral hearing aid experience. Methods: A total of 23 participants were recruited (14 females, 9 males). The mean age was 74.65 years (ranged from 41 to 83). All subjects had bilateral symmetric sensorineural hearing loss. The most comfortable level (MCL), Background Noise Level (BNL), and acceptable noise level (ANL) were measured for ear with amplification experience and ear without experience. Results: MCL, BNL and ANL in the aided ear was 82.22, 73.48 and 8.74 respectively, in addition in the unaided ear the results for MCL, BNL and ANL was 81.78, 72.13 and 9.65 respectively. Comparing the mean values of MCL, BNL and ANL between two ears showed no significant
Audio Vesibular Research, 2020
Background and Aim: Digits are suitable speech materials for evaluating recognition of speech-in-... more Background and Aim: Digits are suitable speech materials for evaluating recognition of speech-in-noise in clients with the wide range of language abilities. Farsi Auditory Recognition of Digit-in-Noise (FARDIN) test has been developed and validated in learning-disabled children showing dichotic listening deficit. This study was conducted for further validation of FARDIN and to survey the effects of noise type on the recognition performance in individuals with sensory-neural hearing impairment. Methods: Persian monosyllabic digits 1−10 were extracted from the audio file of FARDIN test. Ten lists were compiled using a random order of the triplets. The first five lists were mixed with multi-talker babble noise (MTBN) and the second five lists with speech-spectrum noise (SSN). Signal-to-noise ratio (SNR) varied from +5 to −15 in 5 dB steps. 20 normal hearing and 19 hearing-impaired individuals participated in the current study. Results: Both types of noise could differentiate the hearing loss from normal hearing. Hearing-impaired group showed weaker performance for digit recognition in MTBN and SSN and needed 4−5.6 dB higher SNR (50%), compared to the normal hearing group. MTBN was more
Digits are suitable speech materials for evaluating recognition of speech-in-noise in clients wit... more Digits are suitable speech materials for evaluating recognition of speech-in-noise in clients with the wide range of language abilities. Farsi Auditory Recognition of Digit-in-Noise (FARDIN) test has been developed and validated in learning-disabled children showing dichotic listening deficit. This study was conducted for further validation of FARDIN and to survey the effects of noise type on the recognition performance in individuals with sensory-neural hearing impairment. Methods: Persian monosyllabic digits 1−10 were extracted from the audio file of FARDIN test. Ten lists were compiled using a random order of the triplets. The first five lists were mixed with multi-talker babble noise (MTBN) and the second five lists with speech-spectrum noise (SSN). Signal-to-noise ratio (SNR) varied from +5 to −15 in 5 dB steps. 20 normal hearing and 19 hearing-impaired individuals participated in the current study. Results: Both types of noise could differentiate the hearing loss from normal hearing. Hearingimpaired group showed weaker performance for digit recognition in MTBN and SSN and needed 4−5.6 dB higher SNR (50%), compared to the normal hearing group. MTBN was more challenging for normal hearing than SSN. Conclusion: Farsi Auditory Recognition of Digit-in-Noise is a validated test for estimating SNR (50%) in clients with hearing loss. It seems SSN is more appropriate for using as a background noise for testing the performance of auditory recognition of digit-in-noise.
Audio Vestibular Research, 2020
Background and Aim: Digits are suitable speech materials for evaluating recognition of speech-in-... more Background and Aim: Digits are suitable speech materials for evaluating recognition of speech-in-noise in clients with the wide range of language abilities. Farsi Auditory Recognition of Digit-in-Noise (FARDIN) test has been developed and validated in learning-disabled children showing dichotic listening deficit. This study was conducted for further validation of FARDIN and to survey the effects of noise type on the recognition performance in individuals with sensory-neural hearing impairment. Methods: Persian monosyllabic digits 1−10 were extracted from the audio file of FARDIN test. Ten lists were compiled using a random order of the triplets. The first five lists were mixed with multi-talker babble noise (MTBN) and the second five lists with speech-spectrum noise (SSN). Signal-to-noise ratio (SNR) varied from +5 to −15 in 5 dB steps. 20 normal hearing and 19 hearing-impaired individuals participated in the current study. Results: Both types of noise could differentiate the hearing loss from normal hearing. Hearing-impaired group showed weaker performance for digit recognition in MTBN and SSN and needed 4−5.6 dB higher SNR (50%), compared to the normal hearing group. MTBN was more
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Papers by Hamid Jalilvand
Methods: The translation was performed in accordance with the Principles of Good Practice for the Translation and Cultural Adaptation Process for Patient-Reported Outcomes Measures. 32 military and veteran men with tinnitus aged 22−74 years participated in the current study. The participants completed the Persian version of the TFI and the second re-evaluation session was conducted over the telephone 10−14 days later. Both relative and absolute reliability indices were computed. Results: Intraclass correlation coefficient(2,1) with consistency definition for the TFI subscales varied from good to excellent. The agreement between the TFI total scores in the evaluation and re-evaluation using Bland-Altman analysis was acceptable and only one case was not located within the limits of agreement.
Conclusion: Initial evaluation of the Persian version of TFI shows acceptable results in terms of reliability. The evaluation of the Persian TFI in different populations of patients with tinnitus and its validity would facilitate its clinical application.
Keywords: Tinnitus; questionnaire; Persian
Methods: The translation was performed in accordance with the Principles of Good Practice for the Translation and Cultural Adaptation Process for Patient-Reported Outcomes Measures. 32 military and veteran men with tinnitus aged 22−74 years participated in the current study. The participants completed the Persian version of the TFI and the second re-evaluation session was conducted over the telephone 10−14 days later. Both relative and absolute reliability indices were computed. Results: Intraclass correlation coefficient(2,1) with consistency definition for the TFI subscales varied from good to excellent. The agreement between the TFI total scores in the evaluation and re-evaluation using Bland-Altman analysis was acceptable and only one case was not located within the limits of agreement.
Conclusion: Initial evaluation of the Persian version of TFI shows acceptable results in terms of reliability. The evaluation of the Persian TFI in different populations of patients with tinnitus and its validity would facilitate its clinical application.
Keywords: Tinnitus; questionnaire; Persian