scholarly journals Processamento auditivo central e desnutrição infantil: revisão sistemática / Central auditory processing and child undernutrition: a systematic review

2018 ◽  
Vol 8 (2) ◽  
pp. 19-25
Author(s):  
Laura Fabiana Burkhard ◽  
Inaê Costa Rechia ◽  
Kamila Castro Grokoski ◽  
Letícia Pacheco Ribas ◽  
Márcia Salgado Machado
Keyword(s):  
Systematic Review ◽  
Hearing Loss ◽  
Auditory Processing ◽  
Central Auditory Processing ◽  
Review Of The Literature ◽  
Child Undernutrition ◽  
Perceptual Disorders ◽  
Electrophysiological Measurements ◽  
And Performance ◽  
Auditory Perceptual Disorders

O objetivo deste estudo é analisar as prováveis inter-relações entre a desnutrição e as alterações do processamento auditivo central. Trata-se de uma revisão sistemática de literatura, na qual foram encontrados 2543 estudos. Três trabalhos atenderam a todos os critérios e foram selecionados. Os resultados encontrados na avaliação comportamental do processamento auditivo central em sujeitos desnutridos ou com histórico de desnutrição demonstraram alterações na escuta competitiva, habilidade de sequencialização sonora verbal e não verbal, fechamento auditivo e figura fundo. Além disso, na avaliação do processamento por meio de medidas eletrofisiológicas, foram identificadas latências aumentadas nos componentes P1, N1 e P300. Existem prováveis evidências de alteração no processamento auditivo central em crianças com histórico de desnutrição. No entanto, tais inter-relações ainda precisam ser aprofundadas e esclarecidas em outros estudos. Em decorrência da complexidade deste assunto, destaca-se a importância da atuação e pesquisa transdisciplinar nas interfaces da Fonoaudiologia e da Nutrição.Palavras-Chave: Desenvolvimento infantil; Desnutrição; Audição; Perda auditiva; Transtornos da percepção auditiva; Doenças auditivas centraisABSTRACTThe aim of this study is to analyze the possible interrelationships between malnutrition and auditory processing disorders. It is a systematic review of the literature. The search found 2543 studies. The three that met all the study criteria were selected. The results in behavioral auditory processing evaluation in undernourished subjects or subjects with malnutrition history have shown changes in the competitive listening, verbal sound sequencing skills and non-verbal, auditory closure and figure background. Moreover, the evaluation processing through electrophysiological measurements were latencies identified in increased P1, N1 and P300. There is possible evidence of change in auditory processing in children with malnutrition history. However, these interrelationships have yet to be deepened and clarified in other studies. Due to the complexity of this subject, the importance of transdisciplinary research and performance in the speech-language and nutritional interfaces is highlighted.Keywords: Child development; Malnutrition; Hearing; Hearing loss; Auditory perceptual disorders; Central auditory diseases

scholarly journals Temporal Alterations to Central Auditory Processing without Synaptopathy after Lifetime Exposure to Environmental Noise

2021 ◽  
Author(s):  
Florian Occelli ◽  
Florian Hasselmann ◽  
Jérôme Bourien ◽  
Jean-Luc Puel ◽  
Nathalie Desvignes ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Auditory Cortex ◽  
Auditory Processing ◽  
Noise Exposure ◽  
Sound Intensity ◽  
Environmental Noise ◽  
Central Auditory Processing ◽  
Adult Rats ◽  
Cochlear Hair Cells ◽  
Lifetime Exposure

Abstract People are increasingly exposed to environmental noise through the cumulation of occupational and recreational activities, which is considered harmless to the auditory system, if the sound intensity remains <80 dB. However, recent evidence of noise-induced peripheral synaptic damage and central reorganizations in the auditory cortex, despite normal audiometry results, has cast doubt on the innocuousness of lifetime exposure to environmental noise. We addressed this issue by exposing adult rats to realistic and nontraumatic environmental noise, within the daily permissible noise exposure limit for humans (80 dB sound pressure level, 8 h/day) for between 3 and 18 months. We found that temporary hearing loss could be detected after 6 months of daily exposure, without leading to permanent hearing loss or to missing synaptic ribbons in cochlear hair cells. The degraded temporal representation of sounds in the auditory cortex after 18 months of exposure was very different from the effects observed after only 3 months of exposure, suggesting that modifications to the neural code continue throughout a lifetime of exposure to noise.

scholarly journals Hormones and Hearing: Central Auditory Processing in Women

2019 ◽  
Vol 30 (06) ◽  
pp. 493-501
Author(s):  
Skylar Trott ◽  
Trey Cline ◽  
Jeffrey Weihing ◽  
Deidra Beshear ◽  
Matthew Bush ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Auditory Processing ◽  
Auditory Brainstem ◽  
Human Model ◽  
Central Auditory Processing ◽  
Hormonal Changes ◽  
Hearing Sensitivity ◽  
Organ Systems ◽  
Significant Difference ◽  
Brainstem Response

AbstractEstrogen has been identified as playing a key role in many organ systems. Recently, estrogen has been found to be produced in the human brain and is believed contribute to central auditory processing. After menopause, a low estrogen state, many women report hearing loss but demonstrate no deficits in peripheral hearing sensitivity, which support the notion that estrogen plays an effect on central auditory processing. Although animal research on estrogen and hearing loss is extensive, there is little in the literature on the human model.The aim of this study was to evaluate relationships between hormonal changes and hearing as it relates to higher auditory function in pre- and postmenopausal (Post-M) females.A prospective, group comparison study.Twenty eight women between the ages of 18 and 70 at the University of Kentucky were recruited.Participants were separated into premenopausal and peri-/Post-M groups. Participants had normal peripheral hearing sensitivity and underwent a behavioral auditory processing battery and electrophysiological evaluation. An analysis of variance was performed to address the aims of the study.Results from the study demonstrated statistically significant difference between groups, where Post-M females had difficulties in spatial hearing abilities as reflected on the Listening in Spatialized Noise Test–Sentences test. In addition, measures on the auditory brainstem response and the middle latency response reflected statistically significant differences between groups with Post-M females having longer latencies.Results from the present study demonstrated significant differences between groups, particularly listening in noise. Females who present with auditory complaints in spite of normal hearing thresholds should have a more extensive audiological evaluation to further evaluate possible central deficits.

scholarly journals Research Insights on Neural Effects of Auditory Deprivation and Restoration in Unilateral Hearing Loss: A Systematic Review

2020 ◽  
Vol 9 (3) ◽  
pp. 812 ◽  
Author(s):  
Jolijn Vanderauwera ◽  
Elisabeth Hellemans ◽  
Nicolas Verhaert
Keyword(s):  
Systematic Review ◽  
Hearing Loss ◽  
Auditory Processing ◽  
Onset Time ◽  
Unilateral Hearing Loss ◽  
Auditory Input ◽  
Number Of Patients ◽  
Magnetic Resonance Imaging Mri ◽  
Functional Neuroplasticity ◽  
The Impact

Neuroplasticity following bilateral deafness and auditory restoration has been repeatedly investigated. In clinical practice, however, a significant number of patients present a severe-to-profound unilateral hearing loss (UHL). To date, less is known about the neuroplasticity following monaural hearing deprivation and auditory input restoration. This article provides an overview of the current research insights on the impact of UHL on the brain and the effect of auditory input restoration with a cochlear implant (CI). An exhaustive systematic review of the literature was performed selecting 38 studies that apply different neural analyses techniques. The main results show that the hearing ear becomes functionally dominant after monaural deprivation, reshaping the lateralization of the neural network for auditory processing, a process that can be considered to influence auditory restoration. Furthermore, animal models predict that the onset time of UHL impacts auditory restoration. Hence, the results seem to advocate for early restoration of UHL, although further research is required to disambiguate the effects of duration and onset of UHL on auditory restoration and on structural neuroplasticity following UHL deprivation and restoration. Ongoing developments on CI devices compatible with Magnetic Resonance Imaging (MRI) examinations will provide a unique opportunity to investigate structural and functional neuroplasticity following CI restoration more directly.

Audiological Correlates to a Rupture of a Pontine Arteriovenous Malformation

2004 ◽  
Vol 15 (02) ◽  
pp. 161-171 ◽  
Author(s):  
Frank E. Musiek ◽  
Jane A. Baran
Keyword(s):  
Hearing Loss ◽  
Arteriovenous Malformation ◽  
Auditory Processing ◽  
Rehabilitation Program ◽  
Central Auditory Processing ◽  
Central Auditory Processing Disorder ◽  
Auditory Rehabilitation ◽  
Initial Symptoms ◽  
Recovery Mechanisms

This is a report of a female patient in her midthirties who sustained a hemorrhage secondary to an arteriovenous malformation in the region of the pons. The patient's initial symptoms included hearing loss and tinnitus, which were followed by the more characteristic symptoms of headache and loss of consciousness. Results of audiological testing at three months postaccident documented the presence of a hearing loss and a central auditory processing disorder, and the patient was provided an auditory rehabilitation program. Follow-up testing over the course of an additional year documented improvement in both pure-tone threshold and central test results; however, at 15 months postaccident, some auditory deficits remained, especially in the ear ipsilateral to the primary site of lesion. The anatomical correlates of these deficits are discussed, as are the potential contributions of both the auditory rehabilitation program and spontaneous recovery mechanisms to the documented improvements in auditory function.

scholarly journals Hearing Characteristics of Stroke Patients: Prevalence and Characteristics of Hearing Impairment and Auditory Processing Disorders in Stroke Patients

2017 ◽  
Vol 28 (06) ◽  
pp. 491-505 ◽  
Author(s):  
Nehzat Koohi ◽  
Deborah A. Vickers ◽  
Rahul Lakshmanan ◽  
Hoskote Chandrashekar ◽  
David J. Werring ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Hearing Impairment ◽  
Auditory Processing ◽  
Otoacoustic Emissions ◽  
Pure Tone Audiometry ◽  
Stroke Survivors ◽  
Central Auditory Processing ◽  
Hearing Impairments ◽  
Stroke Patients ◽  
Brainstem Response

Background: Stroke survivors may suffer from a range of hearing impairments that may restrict their participation in postacute rehabilitation programs. Hearing impairment may have a significant impact on listening, linguistic skills, and overall communication of the affected stroke patient. However, no studies sought to systematically characterize auditory function of stroke patients in detail, to establish the different types of hearing impairments in this cohort of patients. Such information would be clinically useful in understanding and addressing the hearing needs of stroke survivors. Purpose: The present study aimed to characterize and classify the hearing impairments, using a detailed audiological assessment test battery, in order to determine the level of clinical need and inform appropriate rehabilitation for this patient population. Research Design: A case–control study. Study Sample: Forty-two recruited stroke patients who were discharged from a stroke unit and 40 control participants matched for age. Data Collection and Analysis: All participants underwent pure-tone audiometry and immittance measurements including acoustic reflex threshold, transient-evoked otoacoustic emissions, auditory-evoked brainstem response, and a central auditory processing assessment battery, performed in a single session. Hearing impairments were classified as peripheral hearing loss (cochlear and neural type), central auditory processing disorder (CAPD), and as a combination of CAPD and peripheral hearing loss. Results: Overall mean hearing thresholds were not significantly different between the control and stroke groups. The most common type of hearing impairment in stroke patients was the combination type, “peripheral and CAPD,” in the 61- to 80-yr-old subgroup (in 55%), and auditory processing deficits in 18- to 60-yr-olds (in 40%), which were both significantly higher than in controls. Conclusions: This is the first study to examine hearing function in detail in stroke patients. Given the importance of hearing for the efficiency of communication, it is essential to identify hearing impairments and differentiate peripheral and central deficits to define an appropriate intervention plan.

scholarly journals Cortical Auditory Evoked Potentials in Cognitive Impairment and Their Relevance to Hearing Loss: A Systematic Review Highlighting the Evidence Gap

2021 ◽  
Vol 15 ◽  
Author(s):  
Hanne Gommeren ◽  
Joyce Bosmans ◽  
Emilie Cardon ◽  
Griet Mertens ◽  
Patrick Cras ◽  
...  
Keyword(s):  
Systematic Review ◽  
Hearing Loss ◽  
Cognitive Impairment ◽  
Cognitive Decline ◽  
Auditory Processing ◽  
Auditory Evoked Potentials ◽  
Event Related Potential ◽  
Auditory Evoked Potential ◽  
Publication Date ◽  
Reference List

Background: Alzheimer’s disease (AD) is the most prevalent cause of dementia which affects a growing number of people worldwide. Early identification of people at risk to develop AD should be prioritized. Hearing loss is considered an independent potentially modifiable risk factor for accelerated cognitive decline and dementia in older adults. The main outcome of interest of this review is the alteration of Cortical Auditory Evoked Potential (CAEP) morphology in an AD or mild cognitive impairment (MCI) population with and without hearing loss.Methods: Two investigators independently and systematically searched publications regarding auditory processing on a cortical level in people with cognitive impairment (MCI or AD) with and without hearing loss. Only articles which mentioned at least one auditory elicited event-related potential (ERP) component and that were written in English or Dutch were included. Animal studies were excluded. No restrictions were imposed regarding publication date. The reference list of potential sources were screened for additional articles.Results: This systematic review found no eligible articles that met all inclusion criteria. Therefore, no results were included, resulting in an empty systematic review.Conclusion: In general, dysfunction – being either from cognitive or auditory origin – reduces CAEP amplitudes and prolongs latencies. Therefore, CAEPs may be a prognostic indicator in the early stages of cognitive decline. However, it remains unclear which CAEP component alteration is due to cognitive impairment, and which is due to hearing loss (or even both). In addition, vestibular dysfunction – associated with hearing loss, cognitive impairment and AD – may also alter CAEP responses. Further CAEP studies are warranted, integrating cognitive, hearing, and vestibular evaluations.

Hearing Screening in Preschool Children of a Rural Community in Portugal - A 10-year Experience

2020 ◽  
Vol 30 (Supplement_2) ◽  
Author(s):  
S Fonseca ◽  
C Reis ◽  
L Monteiro ◽  
C Monteiro ◽  
M Serrano
Keyword(s):  
Hearing Loss ◽  
Preschool Children ◽  
Otitis Media ◽  
Rural Community ◽  
Auditory Processing ◽  
Otitis Media With Effusion ◽  
Hearing Screening ◽  
Central Auditory Processing ◽  
Second Stage ◽  
Age Range

Abstract Introduction Preschool hearing screening programmes would identify later onset or progressive hearing losses and conductive hearing loss, due to the high prevalence of otitis media with effusion in childhood. Hearing loss associated with otitis media with effusion can have a great impact on reading, writing, central auditory processing and balance. Objectives The present study aims at characterising the audiological alterations found in preschool children screened in a rural community in Portugal, and the correlation between audiological findings and otoscopy. Methodology This is an observational study using the results obtained in a ten year audiological and otological screening of preschool children. Otoscopy, Tympanometry and Audiometry (1, 2 and 4 KHz presented at 40 and 20 dB intensity) were performed at the first stage of the screening and the results were classified as “pass” or “refer”. Every non-normal result of any category would imply a second stage consisting of observation by an ENT specialist at the site and the establishing of a follow-up plan. Written Informed Consent was obtained from the parents prior to initiating the study. Results 595 children aged 5 and 6 years were screened between 2007 and 2017, of whom 192 (32.3%) required referral to the second stage. The most frequent alteration was found in the tympanogram. The tympanograms showed a significant correlation with the otoscopy performed by the ENT doctor, mainly type B tympanograms. The pass/refer audiometry also showed a statistically significant correlation with the medical otoscopy, although weak in all frequencies studied. Conclusion It’s extremely important to perform a hearing screening in the age range of 5-6 years (with a high predisposition to middle ear problems), with the main objective of identifying and referring for treatment children who present alterations in order to reduce the consequences of the hearing impairment.

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