Evaluation of non-linear frequency compression hearing aids using speech P1-cortical auditory evoked potential

2015 ◽  
Vol 14 (1) ◽  
pp. 36-43
Author(s):  
Nagwa Hazzaa ◽  
Dalia Mohamed Hassan ◽  
Abeer Hassan
Keyword(s):  
Hearing Aids ◽  
Evoked Potential ◽  
Auditory Evoked Potential ◽  
Frequency Compression ◽  
Linear Frequency ◽  
Non Linear ◽  
Cortical Auditory Evoked Potential

scholarly journals Effects of Adaptive Non-linear Frequency Compression in Hearing Aids on Mandarin Speech and Sound-Quality Perception

2021 ◽  
Vol 15 ◽  
Author(s):  
Shuang Qi ◽  
Xueqing Chen ◽  
Jing Yang ◽  
Xianhui Wang ◽  
Xin Tian ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Hearing Aids ◽  
Sound Quality ◽  
Compression Algorithm ◽  
Frequency Compression ◽  
Quality Perception ◽  
Linear Frequency ◽  
Sentence Recognition ◽  
Non Linear

ObjectiveThis study was aimed at examining the effects of an adaptive non-linear frequency compression algorithm implemented in hearing aids (i.e., SoundRecover2, or SR2) at different parameter settings and auditory acclimatization on speech and sound-quality perception in native Mandarin-speaking adult listeners with sensorineural hearing loss.DesignData consisted of participants’ unaided and aided hearing thresholds, Mandarin consonant and vowel recognition in quiet, and sentence recognition in noise, as well as sound-quality ratings through five sessions in a 12-week period with three SR2 settings (i.e., SR2 off, SR2 default, and SR2 strong).Study SampleTwenty-nine native Mandarin-speaking adults aged 37–76 years old with symmetric sloping moderate-to-profound sensorineural hearing loss were recruited. They were all fitted bilaterally with Phonak Naida V90-SP BTE hearing aids with hard ear-molds.ResultsThe participants demonstrated a significant improvement of aided hearing in detecting high frequency sounds at 8 kHz. For consonant recognition and overall sound-quality rating, the participants performed significantly better with the SR2 default setting than the other two settings. No significant differences were found in vowel and sentence recognition among the three SR2 settings. Test session was a significant factor that contributed to the participants’ performance in all speech and sound-quality perception tests. Specifically, the participants benefited from a longer duration of hearing aid use.ConclusionFindings from this study suggested possible perceptual benefit from the adaptive non-linear frequency compression algorithm for native Mandarin-speaking adults with moderate-to-profound hearing loss. Periods of acclimatization should be taken for better performance in novel technologies in hearing aids.

Benefits of Non-Linear Frequency Compression Hearing Aids

2018 ◽  
Vol 71 (7) ◽  
pp. 10
Author(s):  
James Shehorn ◽  
Nicole Marrone ◽  
Thomas Muller
Keyword(s):  
Hearing Aids ◽  
Frequency Compression ◽  
Linear Frequency ◽  
Non Linear

scholarly journals Cortical Auditory Evoked Potential: evaluation of speech detection in adult hearing aid users

CoDAS ◽  
2014 ◽  
Vol 26 (5) ◽  
pp. 367-373 ◽  
Author(s):  
Alessandra Spada Durante ◽  
Margarita Bernal Wieselberg ◽  
Sheila Carvalho ◽  
Nayara Costa ◽  
Beatriz Pucci ◽  
...  
Keyword(s):  
Hearing Aids ◽  
Evoked Potential ◽  
Free Field ◽  
Sound Field ◽  
Automatic Detection ◽  
Cortical Response ◽  
Auditory Evoked Potential ◽  
Speech Sounds ◽  
Speech Detection ◽  
Cortical Auditory Evoked Potential

Purpose:To analyze the presence of auditory cortical potential and its correlation with psychoacoustic detection of speech sounds as well as the latency of the P1, N1 e P2 components presented in free field in hearing impaired adults with and without amplification.Methods:We evaluated 22 adults with moderate to severe symmetrical bilateral sensorineural hearing loss, regular users of bilateral hearing aids. Speech sounds of low (/m/), medium (/g/) and high (/t/) frequencies were presented in sound field in decreasing intensities of 75, 65 and of 55 dBSPL in free field with and without hearing aids. The used equipment performs automatic statistical detection of the presence of response; forthermore, the latencies of waves P1, N1 e P2 were labeled and the psychoacoustic perception was registered.Results:The results demonstrated the increased presence of cortical response with hearing aids. We observed the correlation between psychoacoustic perception and automatic detection of 91% for the sounds /g/ and /t/ and ranged from 73 to 86% for the sound /m/. The averages of latencies P1-P2-N1 decreased with both increasing intensity and the use of hearing aids for the three sounds. The differences were significant for the sounds /g/ and /t/ in comparison with and without hearing aids.Conclusion:There was increase in the presence of cortical auditory evoked potential with hearing aids. Automatic detection of cortical response provided with hearing aids showed 91% agreement with the psychoacoustic perception of the speech signal. In the analysis of latency measures of the P1, N1 and P2 components, it was observed a decrease with the increase of the signal intensity and the use of amplification for the three speech stimuli /m/, /g/ and /t/.

scholarly journals Changes in cortical auditory evoked potentials in response to auditory training in elderly hearing aid users

2021 ◽  
Author(s):  
YARA BAGALI ALCÂNTARA ◽  
WILLIANS WALACE FANTE TOLEDO ◽  
KAROLINE RIBEIRO DE LIMA ◽  
ALINE TENÓRIO LINS CARNAÚBA ◽  
EDUARDO FEDERIGHI BAISI CHAGAS ◽  
...  
Keyword(s):  
Elderly People ◽  
Hearing Aids ◽  
Auditory Evoked Potentials ◽  
Evoked Potential ◽  
Hearing Aid ◽  
Training Group ◽  
Auditory Evoked Potential ◽  
Auditory Training ◽  
Final Assessment ◽  
Cortical Auditory Evoked Potential

Abstract Objective To compare the cortical auditory evoked potential responses pre-and post-Auditory Musical Training associated with hearing aid adaptation in elderly people with presbycusis. Design: this is a prospective, randomized, single-blind study. Study Sample: eight presbiacusis elderly people between 65 and 80 years, new hearing aid users, divided into two groups participated in the study: Hearing Aid Group: use of hearing aid; and Auditory Training Group: use of hearing aid in addition to musical auditory training for 16 sessions. All participants were submitted to cortical auditory evoked potential tests with verbal stimulation in two different moments: Initial assessment, carried out before hearing aid adaptation and auditory training, and after three months, final assessment at the end of the auditory training sessions. All participants were adapted bilaterally with digital mini hearing aids. Results: There was a decrease in the P3a latency component for the Auditory Training Group when initial and final assessment were compared. Conclusion: There was a change in the CAEP in elderly people with presbycusis in response to the Musical Auditory Training associated with the use of hearing aids in elderly people with presbycusis.

scholarly journals The effect of early versus late lipid infusion in parenteral nutrition on the biochemical and cortical auditory evoked potential parameters in preterm neonates

2019 ◽  
Vol 67 (1) ◽  
Author(s):  
Rania Mohamed Abdou ◽  
Hoda Mahmoud Ibrahim Weheiba
Keyword(s):  
Weight Gain ◽  
Parenteral Nutrition ◽  
Biochemical Parameters ◽  
Evoked Potential ◽  
Demographic Data ◽  
Auditory Evoked Potential ◽  
Preterm Neonates ◽  
Lipid Infusion ◽  
Significant Difference ◽  
Cortical Auditory Evoked Potential

Abstract Background As brain activity depends greatly on the functions provided by lipid membranes, dietary fat in early life can affect the developing nervous system. Despite the adoption of an early more aggressive parenteral nutrition approach with amino acid infusions still reluctance to the early use of intravenous lipids in neonates. Aim To compare the effect of delayed versus early introduction of intravenous lipid in preterm on the biochemical parameters and on brain development by the cortical auditory evoked potential (CAEP) latency and amplitude. Methods This is a comparative study included 49 neonates admitted at the ain shams university NICUs. Participants were divided into two groups: 26 in group of early lipid infusion and 23 in late lipid infusion, Demographic data, and biochemical parameters were documented during the 1st 2 weeks of life. The CAEP was performed at age of 6 months. The latency and amplitude of P1 were recorded and compared between both groups. Results In the present work we found that group of early lipid infusion had reach their full oral intake earlier with shorter duration of parenteral nutrition and length of stay. They had better weight gain and significantly better glucose level control than group of late lipid infusion. There was no significant difference in the other chemical parameters between both groups expect for the higher incidence of cholestasis in the group of late lipid infusion. At 6 months of age, the group of early lipid infusion had significantly shorter latency and amplitude of P1 than the group of late lipid infusion. Conclusion Early effective nutrition positively affect feeding tolerance and weight gain and maturation of higher brain centers brain.

Cellular generators of the cortical auditory evoked potential initial component

1992 ◽  
Vol 84 (2) ◽  
pp. 196-200 ◽  
Author(s):  
Mitchell Steinschneider ◽  
Craig E. Tenke ◽  
Charles E. Schroeder ◽  
Daniel C. Javitt ◽  
Gregory V. Simpson ◽  
...  
Keyword(s):  
Evoked Potential ◽  
Auditory Evoked Potential ◽  
Initial Component ◽  
Cortical Auditory Evoked Potential
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