Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 25.575
Filtrar
1.
Comput Intell Neurosci ; 2022: 4567989, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35498192

RESUMO

Sign language is essential for deaf and mute people to communicate with normal people and themselves. As ordinary people tend to ignore the importance of sign language, which is the mere source of communication for the deaf and the mute communities. These people are facing significant downfalls in their lives because of these disabilities or impairments leading to unemployment, severe depression, and several other symptoms. One of the services they are using for communication is the sign language interpreters. But hiring these interpreters is very costly, and therefore, a cheap solution is required for resolving this issue. Therefore, a system has been developed that will use the visual hand dataset based on an Arabic Sign Language and interpret this visual data in textual information. The dataset used consists of 54049 images of Arabic sign language alphabets consisting of 1500\ images per class, and each class represents a different meaning by its hand gesture or sign. Various preprocessing and data augmentation techniques have been applied to the images. The experiments have been performed using various pretrained models on the given dataset. Most of them performed pretty normally and in the final stage, the EfficientNetB4 model has been considered the best fit for the case. Considering the complexity of the dataset, models other than EfficientNetB4 do not perform well due to their lightweight architecture. EfficientNetB4 is a heavy-weight architecture that possesses more complexities comparatively. The best model is exposed with a training accuracy of 98 percent and a testing accuracy of 95 percent.


Assuntos
Surdez , Línguas de Sinais , Gestos , Humanos , Idioma , Aprendizado de Máquina
5.
Neurol India ; 70(2): 554-562, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35532619

RESUMO

Background: This study aimed to delineate the underlying pathophysiology of tinnitus between normal hearing and hearing loss subjects. Objective: The study aimed to characterize the neuropsychological aspects of two types of groups with tinnitus having variable hearing thresholds. Materials and Methods: The study sample comprises 75 subjects in a group with tinnitus and normal hearing, and 100 subjects in the tinnitus and hearing loss group. Subjects were matched to their respective controls for age, gender, and education levels. Subjects underwent verbal learning and memory tasks, visual learning, memory, listening attention, sustained visual attention, work memory, category control, phonemic mastery, response inhibition, and data processing velocity. Results and Conclusions: Subjects having hearing loss with bilateral tinnitus showed significantly reduced performance on total learning capacity (P = 0.02) and recognition (P = 0.05) (Rey's auditory verbal learning test), auditory attention tasks, digit forward span test (DFST) (P = 0.03), digit span test score (P = 0.01), and working memory (P = 0.02) (digit backward span test). For response inhibition tasks and Stroop interference (P = 0.03), subjects with normal hearing with bilateral tinnitus displayed lower performance. This study proves a relationship between poor working memory, auditory memory, total learning capacity, and recognition due to hearing impairment in bilateral Tinnitus subjects. The study has substantial implications for effective assessment and treatment recommendations in hearing loss with bilateral tinnitus subjects.


Assuntos
Surdez , Perda Auditiva , Zumbido , Cognição/fisiologia , Perda Auditiva/complicações , Humanos , Memória de Curto Prazo/fisiologia , Zumbido/complicações , Aprendizagem Verbal
6.
BMJ Case Rep ; 15(5)2022 May 03.
Artigo em Inglês | MEDLINE | ID: mdl-35504671

RESUMO

Neurobrucellosis is a zoonotic infection transmitted by infected animals or by contact with animal products and is an important health problem in resource-limited settings. In this case report, we present the case of a middle-aged man presenting with encephalomyelitis with hearing loss and diagnosed with neurobrucellosis based on imaging and serological tests. Because brucellosis infection is indolent, a high index of suspicion should be maintained in individuals presenting with fever, neurological signs and symptoms so that early management can prevent long-term neurological sequelae such as focal neurological deficits, hydrocephalus and psychiatric sequelae.


Assuntos
Brucelose , Surdez , Encefalomielite , Perda Auditiva , Hidrocefalia , Brucelose/complicações , Brucelose/diagnóstico , Brucelose/tratamento farmacológico , Surdez/complicações , Encefalomielite/complicações , Perda Auditiva/complicações , Humanos , Hidrocefalia/etiologia , Pessoa de Meia-Idade
7.
Artigo em Chinês | MEDLINE | ID: mdl-35545598

RESUMO

Objective: To analyze the incidence characteristics of occupational diseases in Guangzhou from 2010 to 2020, provide scientific basis for formulating occupational disease prevention and control policies. Methods: In January 2021, based on the data of occupational diseases in Guangzhou reported in the Information Monitoring System of Occupational Diseases and Occupational Health, descriptive epidemiological method was used to analyze the types and characteristics of occupational diseases in Guangzhou from 2010 to 2020. Results: A total of 1341 cases of 38 kinds of occupational diseases in 9 categories were reported in the past 11 years. The incidence of occupational pneumoconiosis, occupational otolaryngology and oral diseases and occupational chemical poisoning ranked the top three, accounting for 38.1% (511/1341) , 30.5% (409/1341) and 16.2% (217/1341) of the total cases respectively. The cases of pneumoconiosis in welders and silicosis accounted for 47.7% (244/511) and 34.4% (176/511) of the cases of occupational pneumoconiosis respectively. The cases of noise deafness accounted for 99.8% (408/409) of occupational otorhinolaryngology oral diseases. Acute occupational chemical poisoning cases accounted for 26.7% (58/217) of the occupational chemical poisoning cases, in which dichloroethane poisoning cases ranked the first, accounting for 79.3% (46/58) . Chronic occupational chemical poisoning cases accounted for 73.3% (159/217) of the occupational poisoning cases, in which benzene and lead poisoning cases ranked the top two, accounting for 79.2% (126/159) and 17.6% (28/159) respectively. Conclusion: Pneumoconiosis, silicosis, noise deafness, benzene poisoning, lead poisoning, dichloroethane poisoning should be supervised and managed as key occupational diseases in Guangzhou.


Assuntos
Surdez , Intoxicação por Chumbo , Doenças Profissionais , Pneumoconiose , Silicose , Benzeno , China/epidemiologia , Dicloretos de Etileno , Humanos , Incidência , Doenças Profissionais/epidemiologia , Pneumoconiose/epidemiologia
8.
Am Ann Deaf ; 166(5): 601-620, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35431264

RESUMO

The experiences of d/Deaf and hard of hearing children enrolled in a mainstream school in Zimbabwe are explored. The study used a qualitative approach and a narrative case study design. A sample consisting of two boys and three girls whose ages ranged from 13 to 14 years was purposively selected. Face-to-face semistructured interviews were employed as a data collection tool. The narrative analysis revealed that although d/Deaf and hard of hearing children in the school communicated through sign language, they could develop friendships with hearing children. However, the d/Deaf and hard of hearing children experienced behavioral and mental health issues, including, among others, lack of support, discrimination, and labeling.


Assuntos
Surdez , Pessoas com Deficiência Auditiva , Adolescente , Criança , Surdez/psicologia , Feminino , Humanos , Masculino , Pessoas com Deficiência Auditiva/psicologia , Instituições Acadêmicas , Línguas de Sinais , Zimbábue
9.
Am Ann Deaf ; 166(5): 681-697, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35431268

RESUMO

Self-determination is a potential predictor of in-school and postschool success, yet it has not previously been examined in youth and young adults who are deaf or hard of hearing (DHH). The present study used a cross-sectional survey design to examine the reliability and validity of the American Sign Language (ASL) version of the Self-Determination Inventory: Student Report (ASL SDI:SR) and to develop an understanding of mean self-determination strengths and areas of need in a sample of youth and young adults who were DHH; 221 participants completed the ASL SDI:SR, including individuals representing each type of educational setting and each type of communication mode. The component with the highest mean score was psychological empowerment; the lowest mean score was for self-realization. The findings showed that the ASL SDI:SR produced reliable scores. Implications for future practice and research are discussed.


Assuntos
Surdez , Pessoas com Deficiência Auditiva , Adolescente , Estudos Transversais , Surdez/diagnóstico , Surdez/psicologia , Humanos , Autonomia Pessoal , Pessoas com Deficiência Auditiva/psicologia , Reprodutibilidade dos Testes , Instituições Acadêmicas , Línguas de Sinais , Estados Unidos , Adulto Jovem
10.
Am Ann Deaf ; 166(5): 709-714, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35431271

RESUMO

Dr. Kathee Mangan Christensen, indefatigable ally and reformer in deaf education, passed away on December 8, 2021, in San Diego, CA. Kathee (called KC in the Deaf community) was not audiologically deaf. Yet throughout her life, as a teacher, teacher educator, and writer/researcher, she participated in social, political, and linguistic facets of the Deaf community promoting diversity, inclusion, and Deaf/hearing collaborative partnerships in the United States, Mexico, and Taiwan.


Assuntos
Surdez , Feminino , Audição , Humanos , Estados Unidos
11.
Cell Mol Life Sci ; 79(5): 249, 2022 Apr 19.
Artigo em Inglês | MEDLINE | ID: mdl-35438341

RESUMO

BACKGROUND: The Ca2+/calmodulin-dependent protein kinase kinases (CaMKKs) are serine/threonine-directed protein kinases that are activated following increases in intracellular calcium, playing a critical role in neuronal signaling. Inner-ear-trauma-induced calcium overload in sensory hair cells has been well documented in the pathogenesis of traumatic noise-induced hair cell death and hearing loss, but there are no established pharmaceutical therapies available due to a lack of specific therapeutic targets. In this study, we investigated the activation of CaMKKß in the inner ear after traumatic noise exposure and assessed the prevention of noise-induced hearing loss (NIHL) with RNA silencing. RESULTS: Treatment with short hairpin RNA of CaMKKß (shCaMKKß) via adeno-associated virus transduction significantly knocked down CaMKKß expression in the inner ear. Knockdown of CaMKKß significantly attenuated noise-induced hair cell loss and hearing loss (NIHL). Additionally, pretreatment with naked CaMKKß small interfering RNA (siCaMKKß) attenuated noise-induced losses of inner hair cell synapses and OHCs and NIHL. Furthermore, traumatic noise exposure activates CaMKKß in OHCs as demonstrated by immunolabeling for p-CaMKI. CaMKKß mRNA assessed by fluorescence in-situ hybridization and immunolabeling for CaMKKß in OHCs also increased after the exposure. Finally, pretreatment with siCaMKKß diminished noise-induced activation of AMPKα in OHCs. CONCLUSIONS: These findings demonstrate that traumatic-noise-induced OHC loss and hearing loss occur primarily via activation of CaMKKß. Targeting CaMKKß is a key strategy for prevention of noise-induced hearing loss. Furthermore, our data suggest that noise-induced activation of AMPKα in OHCs occurs via the CaMKKß pathway.


Assuntos
Surdez , Perda Auditiva Provocada por Ruído , Proteínas Quinases Ativadas por AMP/metabolismo , Cálcio/metabolismo , Quinase da Proteína Quinase Dependente de Cálcio-Calmodulina/genética , Quinase da Proteína Quinase Dependente de Cálcio-Calmodulina/metabolismo , Morte Celular , Surdez/metabolismo , Cabelo/metabolismo , Células Ciliadas Auditivas Externas/metabolismo , Células Ciliadas Auditivas Externas/patologia , Perda Auditiva Provocada por Ruído/etiologia , Perda Auditiva Provocada por Ruído/patologia , Perda Auditiva Provocada por Ruído/prevenção & controle , Humanos , RNA Interferente Pequeno/metabolismo
12.
PLoS One ; 17(4): e0266077, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35452461

RESUMO

Access to low-frequency acoustic information in cochlear implant patients leads to better speech understanding in noise. Electrocochleography (ECochG) can provide real-time feedback about the health of the cochlea during the insertion process with the potential to reduce insertion trauma. We describe our experiences of using this technique. Data from 47 adult subjects with measurable residual hearing and an Advanced Bionics (Valencia, CA) SlimJ (46) or MidScala (1) electrode array were analyzed. ECochGs were recorded intraoperatively via the implant. The surgeon adjusted the course of the electrode insertion based on drops in the ECochG. The final array position was assessed using postoperative imaging and pure tone thresholds were measured before and after surgery. Three different patterns of ECochG response amplitude were observed: Growth, Fluctuating and Total Loss. Subjects in the growth group showed the smallest postoperative hearing loss. However, the group with fluctuating amplitudes showed no meaningful correlation between the ECochG responses and the postoperative hearing loss, indicating that amplitude alone is insufficient for detecting damage. Considering the phase of the signal additionally to the amplitude and reclassifying the data by both the phase and amplitude of the response into three groups Type I-Type III produced statistically significant correlations between postoperative hearing loss and the grouping based on amplitude and phase respectively. We showed significantly better hearing preservation for Type I (no drop in amplitude) and Type II (drop with a concurrent phase shift), while Type III (drop without concurrent phase shift) had more surgery induced hearing loss. ECochG potentials measured through the implant could provide valuable feedback during the electrode insertion. Both the amplitude and phase of the ECochG response are important to consider. More data needs to be evaluated to better understand the impact of the different signal components to design an automated system to alert the surgeon ahead of damaging the cochlea.


Assuntos
Implante Coclear , Implantes Cocleares , Surdez , Perda Auditiva , Adulto , Audiometria de Resposta Evocada/métodos , Cóclea/cirurgia , Implante Coclear/métodos , Surdez/cirurgia , Audição , Perda Auditiva/cirurgia , Humanos
13.
BMJ Case Rep ; 15(4)2022 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-35428666

RESUMO

A woman in her late 40s who works as a veterinary technician represented to the emergency department with increasing headache, confusion, neck stiffness, subjective fevers and distorted hearing 2 days after diagnosis of viral infection at an outside emergency department.Diagnosis of Pasteurella multocida was made from blood cultures and lumbar puncture. Intravenous ceftriaxone was administered for 21 days. By the time of resolution of acute meningitis, she had become completely deaf bilaterally. MRI revealed faint early ossification/possible labyrinthitis ossificans of the basal cochlea, which was confirmed on surgical exploration during the placement of cochlear implants bilaterally 42 days later. We discuss how the atypical features of this infection lead to diagnostic delay and high morbidity, the unique imaging/surgical findings resulting from the infection, and the clinical utility of early and bilateral cochlear implantation in this and similar cases.


Assuntos
Implante Coclear , Implantes Cocleares , Surdez , Meningites Bacterianas , Ossificação Heterotópica , Pasteurella multocida , Surdez/cirurgia , Diagnóstico Tardio , Feminino , Humanos , Meningites Bacterianas/complicações , Meningites Bacterianas/diagnóstico , Meningites Bacterianas/tratamento farmacológico , Ossificação Heterotópica/cirurgia
14.
Nutrients ; 14(8)2022 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-35458218

RESUMO

The relationship between hearing impairment and nutrition has been extensively investigated; however, few studies have focused on this topic in working-age adults by income level. Herein, we aimed to determine the differences in hearing impairment among working-age adults by income level and identify the nutritional factors that affect hearing loss in various socioeconomic groups. Seven-hundred-and-twenty participants had hearing impairment, while 10,130 had normal hearing. After adjustment for propensity score matching, income and smoking status were identified as significant variables. By assessing the relationship between hearing impairment and nutrient intake by income level using multiple regression analyses, significant nutrients differed for each income category. Carbohydrate and vitamin C levels were significant in the low-income group; protein, fat, and vitamin B1 levels were significant in the middle-income group; and carbohydrates were significant in the high-income group. Income was significantly associated with hearing impairment in working-age adults. The proportion of individuals with hearing impairment increased as income decreased. The association between hearing impairment and nutritional intake also differed by income level. Our findings may enable the establishment of health policies for preventing hearing impairment in working-age adults by income level.


Assuntos
Surdez , Perda Auditiva , Adulto , Estudos Transversais , Ingestão de Alimentos , Perda Auditiva/epidemiologia , Humanos , Renda , Pessoa de Meia-Idade , Inquéritos Nutricionais , República da Coreia/epidemiologia
17.
Artigo em Chinês | MEDLINE | ID: mdl-35483684

RESUMO

Objective:By comparing the hearing and speech rehabilitation effects of cochlear implantation (CI) in children with Waardenburg syndrome (WS) and children with common deafness genes (SLC26A4, GJB2) in the Chinese population, and the hearing and speech rehabilitation effects of bilateral CI and unilateral CI in children with WS, to provide a reference for clinical CIin children with WS. Methods:Follow up and return visit 72 pedestrian cochlear implant children with severe and above sensorineural hearing loss and clear gene mutation type diagnosed by Kunming Children's Hospital from 2017 to 2019, including 24 cases in the WS group, 24 cases in the control group (SLC26A4 deafness group and GJB2 deafness group). All enrolled children were evaluated for auditory and speech ability 12 months after startup. Results:The hearing aid threshold, the correct recognition rate of speech recognition ability evaluation, IT-MAIS / MAIS score rate, CAP score, SIR score, there was no significant difference(P>0.05). The correct recognition rates of IT-MAIS / MAIS score, SIR score, natural environment sound recognition, vowel recognition, tone recognition, monosyllabic word recognition, disyllabic word recognition and short sentence recognition in children with WS bilateral CI were significantly higher than those in children with WS unilateral CI (P<0.05). There was no significant difference in CAP score, initial recognition and correct recognition rate of trisyllabic words between children with WS bilateral CI and children with WS unilateral CI (P>0.05). Conclusion:Common deafness genes in children with WS and Chinese population (SLC26A4, GJB2) the effect of cochlear implantation on hearing and speech rehabilitation of sick children is equivalent. For children with severe and above sensorineural hearing loss associated with this syndrome, CI can be used clinically to improve their hearing and speech ability. WS bilateral CI has advantages in some hearing and speech abilities compared with unilateral CI, so those whomeet the conditions should be encouraged bilateral implantation.


Assuntos
Implante Coclear , Surdez , Perda Auditiva Neurossensorial , Síndrome de Waardenburg , Criança , Surdez/genética , Audição , Perda Auditiva Neurossensorial/complicações , Humanos , Fala , Resultado do Tratamento
18.
J Int Adv Otol ; 18(2): 106-111, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-35418357

RESUMO

OBJECTIVE: There is a need for regular surveillance of the hearing of children, no matter what their age. Screening of the hearing of school children can be done quickly and cheaply using teleaudiology. The primary aim of this study was to identify children who showed a suspected hearing impairment from rural areas of the Kujawsko-Pomorskie region and refer them for further audiological testing. A secondary aim was to estimate the prevalence of hearing loss in those children. METHODS: There were 4754 children, made up of 1840 children aged 6-7 years old and 2914 children aged 12-13 years old. Pure-tone air conduction thresholds were obtained at 0.5-8 kHz. Audiometric test was supplemented by results of a brief questionnaire filled in by parents. RESULTS: Of the 4754 children, 618 (13%) failed screening and were referred for detailed audiological diagnostics. The prevalence of hearing loss was estimated to be 7% and was significantly higher (OR = 2.12) in the group aged 6-7 y/o (10.1%) than in the group aged 12-13 y/o (5.0%). In our study the estimated prevalence of HL was twice as high in children aged 6-7 y/o (10.1%) than in children 12-13 y/o (5.0%). This difference was also evident in another study of Polish children from rural areas, where the prevalence of HL was 11.4% in younger children (6-9 y/o) and 5.5% in older children (12-13 y/o). CONCLUSION: Large numbers of school-age children in rural areas have hearing problems. It is recommended that a hearing screening program in primary schools based on e-health solutions should be adopted.


Assuntos
Surdez , Perda Auditiva , Adolescente , Audiometria de Tons Puros/métodos , Criança , Audição , Perda Auditiva/diagnóstico , Perda Auditiva/epidemiologia , Humanos , Polônia/epidemiologia
19.
J Acoust Soc Am ; 151(3): 1913, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-35364910

RESUMO

Standard clinical protocols require hearing protection during magnetic resonance imaging (MRI) for patient safety. This investigation prospectively evaluated the auditory function impact of acoustic noise exposure during a 3.0T MRI in healthy adults. Twenty-nine participants with normal hearing underwent a comprehensive audiologic assessment before and immediately following a clinically indicated head MRI. Appropriate hearing protection with earplugs (and pads) was used per standard of practice. To characterize noise hazards, current sound monitoring tools were used to measure levels of pulse sequences measured. A third audiologic test was performed if a significant threshold shift (STS) was identified at the second test, within 30 days post MRI. Some sequences produced high levels (up to 114.5 dBA; 129 dB peak SPL) that required hearing protection but did not exceed 100% daily noise dose. One participant exhibited an STS in the frequency region most highly associated with noise-induced hearing loss. No participants experienced OSHA-defined STS in either ear. Overall, OAE measures did not show evidence of changes in cochlear function after MRI. In conclusion, hearing threshold shifts associated with hearing loss or OAE level shifts reflecting underlying cochlear damage were not detected in any of the 3.0T MRI study participants who used the current recommended hearing protection.


Assuntos
Surdez , Perda Auditiva Provocada por Ruído , Dispositivos de Proteção das Orelhas , Audição , Perda Auditiva Provocada por Ruído/etiologia , Perda Auditiva Provocada por Ruído/prevenção & controle , Humanos , Imageamento por Ressonância Magnética/efeitos adversos , Adulto Jovem
20.
J Acoust Soc Am ; 151(3): 2255, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-35364945

RESUMO

Contralateral noise inhibits the amplitudes of cochlear and neural responses. These measures may hold potential diagnostic utility. The medial olivocochlear (MOC) reflex underlies the inhibition of cochlear responses but the extent to which it contributes to inhibition of neural responses remains unclear. Mertes and Leek [J. Acoust. Soc. Am. 140, 2027-2038 (2016)] recently examined contralateral inhibition of cochlear responses [transient-evoked otoacoustic emissions (TEOAEs)] and neural responses [auditory steady-state responses (ASSRs)] in humans and found that the two measures were not correlated, but potential confounds of older age and hearing loss were present. The current study controlled for these confounds by examining a group of young, normal-hearing adults. Additionally, measurements of the auditory brainstem response (ABR) were obtained. Responses were elicited using clicks with and without contralateral broadband noise. Changes in TEOAE and ASSR magnitude as well as ABR wave V latency were examined. Results indicated that contralateral inhibition of ASSRs was significantly larger than that of TEOAEs and that the two measures were uncorrelated. Additionally, there was no significant change in wave V latency. Results suggest that further work is needed to understand the mechanism underlying contralateral inhibition of the ASSR.


Assuntos
Surdez , Emissões Otoacústicas Espontâneas , Adulto , Cóclea/fisiologia , Potenciais Evocados Auditivos do Tronco Encefálico/fisiologia , Humanos , Ruído/efeitos adversos , Emissões Otoacústicas Espontâneas/fisiologia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...