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Occlusion effect in bone conduction pure tone and …
https://pubmed.ncbi.nlm.nih.gov/845070/
Two experiments were conducted to determine the occlusion effect (OE) for pure tone and spondee stimuli. Results of experiment I using mastoid placement and unilateral occlusion yielded a mean OE for bone conduction speech reception thresholds of 4.67 dB, which was in agreement with the average OEs of 0.50, 1.0 and 2.0 kHz, or simply the same as the OE for 1.0 …
Occlusion effect: Bone Conduction speech audiometry using ...
https://www.tandfonline.com/doi/abs/10.3109/00206097709080023
(1977). Occlusion effect: Bone Conduction speech audiometry using forehead and mastoid placement. Audiology: Vol. 16, No. 6, pp. 522-529.
Contralateral Occlusion Test (COT): the effect of external ...
https://pubmed.ncbi.nlm.nih.gov/31017175/
Participants underwent sound field audiometry tests with warble tones, with and without ear canal occlusion. Each ear was tested with the standard frequencies (250, 500, 1000, and 2000 Hz). The contralateral ear was suppressed by masking.
A Technique for Estimating the Occlusion Effect for ...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4197401/
Physical measures of this “occlusion effect” (OE) require vibration of the skull. In previous research, either self-voicing or audiometric bone-conduction vibrators have been used to produce this vibration, with the result that the OE could not be measured for frequencies below 125 Hz.
Automated Audiometry: A Review of the Implementation …
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6230538/
In another study, the occlusion effects created by earphones were highlighted. One of the important points in performing an automated audiometry test is to prevent the occlusion effects created by earphones. Supra-aural earphones produce a significant occlusion effect at frequencies of 1 kHz or lower.
Maturation of the occlusion effect: a bone conduction ...
https://pubmed.ncbi.nlm.nih.gov/21617531/
Objective: The aim of this study was to investigate the maturational time course of the occlusion effect in infants with normal hearing. The objectives were (i) to investigate the occlusion effect in a larger group of young infants, (ii) to determine whether the occlusion effect is seen in bone conduction auditory steady state responses (ASSRs) for older infants, and (iii) to investigate …
Insert Phones, Masking, and Occlusion Effect Marni …
https://www.audiologyonline.com/ask-the-experts/insert-phones-masking-and-occlusion-450
This strategy compensates for occlusion effect correction factors up to 20 dB, for frequencies 250-1000 Hz. Insert earphones must be inserted deeply into the ear canal. Shallow insertion of insert earphones can lead to leaking of the sound out of the ear, thereby elevating your air conduction thresholds because a louder tone is needed to ...
How to Perform Masking in Audiology
https://blog.emoyo.tech/content/masking-in-audiology
Occlusion-effect masking. Occlusion-effect masking values will depend on what is occluding the ears (insert or supra-aural earphones). Various studies in the field of occupational audiometry recommend different occlusion-effect correction values.
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