scholarly journals Speech-evoked Brainstem Auditory Responses and Auditory Processing Skills: A Correlation in Adults with Hearing Loss

2017 ◽  
Vol 22 (01) ◽  
pp. 038-044 ◽  
Author(s):  
Taissane Sanguebuche ◽  
Bruna Peixe ◽  
Rúbia Bruno ◽  
Eliara Biaggio ◽  
Michele Garcia
Keyword(s):  
Hearing Loss ◽  
Auditory Processing ◽  
Auditory Pathway ◽  
Gap Detection ◽  
Behavioral Tests ◽  
Behavioral Skills ◽  
Auditory Responses ◽  
Level Difference ◽  
Masking Level Difference ◽  
Brainstem Response

Introduction The auditory system consists of sensory structures and central connections. The evaluation of the auditory pathway at a central level can be performed through behavioral and electrophysiological tests, because they are complementary to each other and provide important information about comprehension. Objective To correlate the findings of speech brainstem-evoked response audiometry with the behavioral tests Random Gap Detection Test and Masking Level Difference in adults with hearing loss. Methods All patients were submitted to a basic audiological evaluation, to the aforementioned behavioral tests, and to an electrophysiological assessment, by means of click-evoked and speech-evoked brainstem response audiometry. Results There were no statistically significant values among the electrophysiological test and the behavioral tests. However, there was a significant correlation between the V and A waves, as well as the D and F waves, of the speech-evoked brainstem response audiometry peaks. Such correlations are positive, indicating that the increase of a variable implies an increase in another and vice versa. Conclusion It was possible to correlate the findings of the speech-evoked brainstem response audiometry with those of the behavioral tests Random Gap Detection and Masking Level Difference. However, there was no statistically significant correlation between them. This shows that the electrophysiological evaluation does not depend uniquely on the behavioral skills of temporal resolution and selective attention.

scholarly journals Auditory rehabilitation in adults: results of a training program

Revista CEFAC ◽  
2019 ◽  
Vol 21 (5) ◽  
Author(s):  
Cristiane Bueno Sales ◽  
Luciana Macedo de Resende ◽  
Carlos Faria Santos Amaral
Keyword(s):  
Hearing Loss ◽  
Hearing Aids ◽  
Auditory Processing ◽  
Auditory Training ◽  
Functional Improvement ◽  
Moderate Degree ◽  
Behavioral Tests ◽  
Level Difference ◽  
Significant Difference ◽  
Masking Level Difference

ABSTRACT Objective: to describe the findings of the auditory processing behavioral tests in patients with hearing loss before and after hearing aid fitting associated with auditory training. Methods: a descriptive analytical study that compared the findings of the auditory processing evaluation in 22 patients, from 19 to 62 years old, with mild or moderate sensorineural hearing loss. Tests used: Sound localization; Masking Level Difference; Alternate Disyllables Dichotic Listening Test; Melodic Frequency Pattern Test, Melodic Duration Pattern Test; Gaps in Noise; Speech in Noise Test. After the first tests, the patients were fitted with hearing aids and underwent eight auditory training sessions. The tests were retaken after a two-month period. Results: there was a predominance of females and a moderate degree hearing loss. In the comparison of the initial and final assessment situations, a statistically significant difference (p <0.05) was seen in all conditions studied, except for the Gaps in Noise and Masking Level Difference tests. Conclusion: the results have proven that the auditory training performed in adult users of hearing aids brought about significant improvements on the auditory processing skills, thus, modifying their auditory behavior. The improvement of the results of the auditory processing behavioral tests in the initial and final situations reflects the hearing functional improvement achieved.

scholarly journals Ultra-fine temporal resolution in auditory processing is preserved in aged mice without peripheral hearing loss

2018 ◽  
Author(s):  
Lasse Osterhagen ◽  
K. Jannis Hildebrandt
Keyword(s):  
Hearing Loss ◽  
Auditory Cortex ◽  
Temporal Processing ◽  
Auditory Processing ◽  
Auditory Brainstem ◽  
Neural Representation ◽  
Gap Detection ◽  
Detection Thresholds ◽  
Age Related ◽  
Brainstem Response

AbstractAge-related hearing loss (presbycusis) is caused by damage to the periphery as well as deterioration of central auditory processing. Gap detection is a paradigm to study age-related temporal processing deficits, which is assumed to be determined primarily by the latter. However, peripheral hearing loss is a strong confounding factor when using gap detection to measure temporal processing. In this study, we used mice from the CAST line, which is known to maintain excellent peripheral hearing, to rule out any contribution of peripheral hearing loss to gap detection performance. We employed an operant Go/No-go paradigm to obtain psychometric functions of gap in noise (GIN) detection at young and middle age. Besides, we measured auditory brainstem responses (ABR) and multiunit recordings in the auditory cortex (AC) in order to disentangle the processing stages of gap detection. We found detection thresholds around 0.6 ms in all measurement modalities. Detection thresholds did not increase with age. In the ABR, GIN stimuli are coded as onset responses to the noise that follows the gap, strikingly similar to the ABR of noise bursts in silence (NBIS). The simplicity of the neural representation of the gap together with the preservation of detection threshold in aged CAST mice suggests that GIN detection in the mouse is primarily determined by peripheral, not central processing.AbbreviaionsGINgap in noiseABRauditory brainstem responseACauditory cortexNBISnoise burst in silenceIINinhibitory interneuron

scholarly journals Masking Level Difference and Electrophysiological Evaluation in Adults with Normal Hearing

2020 ◽  
Vol 24 (04) ◽  
pp. e399-e406
Author(s):  
Joyce Miranda Santiago ◽  
Cyntia Barbosa Laureano Luiz ◽  
Michele Garcia ◽  
Daniela Gil
Keyword(s):  
Auditory Processing ◽  
Auditory Evoked Potentials ◽  
Normal Hearing ◽  
Central Auditory Processing ◽  
Positive Correlation ◽  
Binaural Interaction ◽  
Level Difference ◽  
Significant Difference ◽  
Masking Level Difference ◽  
The Mean

Abstract Introduction The auditory structures of the brainstem are involved in binaural interaction, which contributes to sound location and auditory figure-background perception. Objective To investigate the performance of young adults in the masking level difference (MLD) test, brainstem auditory-evoked potentials (BAEPs) with click stimulus, and frequency-following response (FFR), as well as to verify the correlation between the findings, considering the topographic origin of the components of these procedures. Methods A total of 20 female subjects between 18 and 30 years of age, with normal hearing and no complaints concerning central auditory processing underwent a basic audiological evaluation, as well as the MLD test, BAEP and FFR. Results The mean result on the MLD test was of 10.70 dB. There was a statistically significant difference in the absolute latencies of waves I, III and V in the BAEPs of the ears. A change in the FFR characterized by the absence of the C, E and F waves was noticed. There was a statistically significant difference in the positive correlation of wave V in the BAEPs with the MLD. There was a statistically significant difference in the positive correlation of the mean MLD and the V, A and F components of the FFR. Conclusion The mean MLD was adequate. In the BAEPs, we observed that the click stimulus transmission occurred faster in the right ear. The FFR showed absence of some components. The mean MLD correlated positively with the BAEPs and FFR.

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 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 Resistance to noise-induced gap detection impairment in FVB mice is correlated with reduced neuroinflammatory response and parvalbumin-positive neuron loss

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Alexander K. Zinsmaier ◽  
Weihua Wang ◽  
Li Zhang ◽  
Nadia N. Hossainy ◽  
Shaowen Bao
Keyword(s):  
Auditory Processing ◽  
Noise Exposure ◽  
Strain Differences ◽  
Auditory Pathway ◽  
Gap Detection ◽  
Neuroinflammatory Response ◽  
Neuron Density ◽  
Tnf Α ◽  
Positive Neuron ◽  
Central Auditory Pathway

AbstractExposure to loud noises results in neuroinflammatory responses in the central auditory pathway. Noise-induced neuroinflammation is implicated in auditory processing deficits such as impairment in gap detection. In this study, we examined whether strain differences between the FVB and C57BL/6 mice in noise-induced impairment in gap detection are correlated with strain differences in neuroinflammatory responses. We found that noise induced more robust TNF-α expression in C57BL/6 than in FVB mice. Noise-induced microglial deramification was observed in C57BL/6 mice, but not in FVB mice. Furthermore, noise exposure resulted in a reduction in parvalbumin-positive (PV+) neuron density in the C57BL/6 mice, but not in FVB mice. These results suggest that neuroinflammatory responses and loss of PV+ neurons may contribute to strain differences in noise-induced impairment in gap detection.

Effect of Conductive Hearing Loss and Middle Ear Surgery on Binaural Hearing

1986 ◽  
Vol 95 (5) ◽  
pp. 525-530 ◽  
Author(s):  
Joseph W. Hall ◽  
Eugene L. Derlacki
Keyword(s):  
Hearing Loss ◽  
Middle Ear ◽  
Auditory Processing ◽  
Conductive Hearing Loss ◽  
Binaural Hearing ◽  
Middle Ear Surgery ◽  
Ear Surgery ◽  
Hearing Thresholds ◽  
Masking Level Difference ◽  
Conductive Hearing

This study investigated whether conductive hearing loss reduces normal binaural hearing advantages and whether binaural hearing advantages are normal in patients who have had hearing thresholds improved by middle ear surgery. Binaural hearing was assessed at a test frequency of 500 Hz using the masking level difference and interaural time discrimination thresholds. Results indicated that binaural hearing is often poor in conductive lesion patients and that the reduction in binaural hearing is not always consistent with a simple attenuation of the acoustic signal. Poor binaural hearing sometimes occurs even when middle ear surgery has resulted in bilaterally normal hearing thresholds. Our preliminary results are consistent with the interpretation that auditory deprivation due to conductive hearing loss may result in poor binaural auditory processing.

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