Characterization of cochlear implant-related artifacts during sound-field recording of the auditory steady state response using an amplitude modulated stimulus: A comparison among normal hearing adults, cochlear implant recipients, and implant-in-a-box

2014 ◽  
Vol 136 (4) ◽  
pp. 2306-2306
Author(s):  
Shruti B. Deshpande ◽  
Michael P. Scott ◽  
Fawen Zhang ◽  
Robert W. Keith ◽  
Andrew Dimitrijevic
Keyword(s):  
Steady State ◽  
Cochlear Implant ◽  
Sound Field ◽  
Normal Hearing ◽  
Steady State Response ◽  
State Response ◽  
Field Recording ◽  
Auditory Steady State Response

70. Utility of sound-field auditory steady-state response in normal-hearing adults

2016 ◽  
Vol 127 (9) ◽  
pp. e319
Author(s):  
Alioth Guerrero-Aranda ◽  
Alejandro Torres-Fortuny ◽  
Eduardo Eimil-Suarez
Keyword(s):  
Steady State ◽  
Sound Field ◽  
Normal Hearing ◽  
Steady State Response ◽  
State Response ◽  
Auditory Steady State Response

Auditory steady-state response in cochlear implant patients

2018 ◽  
Vol 69 (5) ◽  
pp. 268-274
Author(s):  
Alejandro Torres-Fortuny ◽  
Isabel Arnaiz-Marquez ◽  
Heivet Hernández-Pérez ◽  
Eduardo Eimil-Suárez
Keyword(s):  
Steady State ◽  
Cochlear Implant ◽  
Steady State Response ◽  
State Response ◽  
Auditory Steady State Response

scholarly journals Measurement of Thresholds Using Auditory Steady-State Response and Cochlear Microphonics in Children with Auditory Neuropathy

2019 ◽  
Vol 30 (08) ◽  
pp. 672-676 ◽  
Author(s):  
Ping Lu ◽  
Yue Huang ◽  
Wen-Xia Chen ◽  
Wen Jiang ◽  
Ni-Yi Hua ◽  
...  
Keyword(s):  
Steady State ◽  
Normal Hearing ◽  
Auditory Neuropathy ◽  
High Signal ◽  
Steady State Response ◽  
Cochlear Microphonics ◽  
Behavioral Threshold ◽  
State Response ◽  
Auditory Steady State Response ◽  
The Difference

AbstractThe detection of precise hearing thresholds in infants and children with auditory neuropathy (AN) is challenging with current objective methods, especially in those younger than six months of age.The aim of this study was to compare the thresholds using auditory steady-state response (ASSR) and cochlear microphonics (CM) in children with AN and children with normal hearing.The thresholds of CM, ASSR, and visual reinforcement audiometry (VRA) tests were recorded; the ASSR and VRA frequencies used were 250, 500, 1000, 2000, and 4000 Hz.The participants in this study were 15 children with AN (27 ears) (1–7.6 years, median age 4.1 years) and ten children with normal hearing (20 ears) (1–8 years, median age four years).The thresholds of the three methods were compared, and histograms were used to represent frequency distributions of threshold differences obtained from the three methods.In children with normal hearing, the average CM thresholds (84.5 dB) were significantly higher than the VRA thresholds (10.0–10.8 dB); in children with AN, both CM and VRA responses were seen at high signal levels (88.9 dB and 70.6–103.4 dB, respectively). In normal children, the difference between mean VRA and ASSR thresholds ranged from 17.5 to 30.3 dB, which was significantly smaller than the difference seen between the mean CM and VRA thresholds (71.5–72.3 dB). The correlation between VRA and ASSR in children with normal hearing ranged from 0.38 to 0.48, whereas no such correlation was seen in children with AN at any frequency (0.03–0.19).Our results indicated that ASSR and CM were poor predictors of the conventional behavioral threshold in children with AN.

scholarly journals Potential Destructive Binaural Interaction Effects in Auditory Steady-State Response Measurements

2021 ◽  
Vol 25 ◽  
pp. 233121652110311
Author(s):  
Sam Watson ◽  
Søren Laugesen ◽  
Bastian Epp
Keyword(s):  
Steady State ◽  
Sound Field ◽  
Test Time ◽  
Steady State Response ◽  
Interaural Time Differences ◽  
Binaural Interaction ◽  
State Response ◽  
Time Period ◽  
Auditory Steady State Response ◽  
Measured Response

An aided sound-field auditory steady-state response (ASSR) has the potential to be used to objectively validate hearing-aid (HA) fittings in clinics. Each aided ear should ideally be tested independently, but it is suspected that binaural testing may be used by clinics to reduce test time. This study simulates dichotic ASSR sound-field conditions to examine the risk of making false judgments due to unchecked binaural effects. Unaided ASSRs were recorded with a clinical two-channel electroencephalography (EEG) system for 15 normal hearing subjects using a three-band CE-Chirp® stimulus. It was found that the noise corrected power of a response harmonic can be suppressed by up to 10 dB by introducing large interaural time differences equal to half the time period of the stimulus envelope, which may occur in unilateral HA users. These large interaural time differences also changed the expression of ASSR power across the scalp, resulting in dramatically altered topographies. This would lead to considerably lower measured response power and possibly nondetections, evidencing that even well fit HAs are fit poorly (false referral), whereas monaural ASSR tests would pass. No effect was found for simulated lateralizations of the stimulus, which is beneficial for a proposed aided ASSR approach. Full-scalp ASSR recordings match previously found 40 Hz topographies but demonstrate suppression of cortical ASSR sources when using stimuli in interaural envelope antiphase.

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