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, 30 , -40 ( Interacustic, ). () (0,125-8 ) , (10, 12, 14 16 ) .
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t .



, (. 1) (<0,05) 4, 6 8 II , , , ( ) . 0,125-3 , II . , (. . 1), (. 2) . (. . 2), 10, 12, 14 16 . II 10 , 12-16 - .
II 16 , 36,4 1,6 . , 41,9 % 40,3 % , . , , . , .

dz , (<0,01) III V 4,07 0,04 6,05 0,02 . (<0,01) , I-V III-V II . , II I-V 4,34 0,03, - 3,94 0,02 (t = 11,1; (<0,01). ³, I-V . , , III, V III, III-V I-V [9, 12, 15, 19]. , .
1 , 1 N1 II (>0,05) 1 4 . 2 N2 . , 1 2 182,4 3,3, II - 194,7 4,1 (t = 2,34; <0,05), 4 183,6 2,9 196,2 3,6 ( = 2,98; <0,01).
N2 . , II 1 268,4 3,7 302,6 4,2 (t = 6,07; <0,01), 4 273,3 3,4 304,6 2,6 (t = 7,19; <0,01). - [8] P2-N2 , .
, , [10, 16-18] , . . [10] 24 334 21 . . 75 % . , , . , , . .
, , 16 . , II . 25,8 % II . , , , . , , , 17,5 % ( 7 40 ) 14 16 , 20,3 1,6 22,9 ->. 1,8 (<0,05). , ' , - ' , , , . , N2 1 278,4 3,7 (t = = 3,13; <0,01), 4 - 283,2 4,1 (t = 3,75; <0,01), . , . , . , .
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1. , , .
2. , .
3. , 14-16 , .
4. III V ( I-V), , . ֳ .
5. 17,5 % 14 16 20,3 1,6 22,9 1,8 (<0,05), N2 - 1 278,4 3,7 (t = 3,13; <0,01), 4 - 283,2 4,1 (t = 3,75; <0,01), . , .

T.A.Shidlovska

ELECTROPHYSIOLOGICAL PARAMETERS OF THE STATE OF VARIOUS PARTS OF THE HEARING APPARATUS IN INDIVIDUALS WITH NORMAL VOICE AND IN PATIENTS WITH VOICE FUNCTIONAL IMPAIRMENTS

Individuals with normal voice and patients with voice functional impairments undergone electrophysiological investigation of various parts of the hearing system, using tone audiometry, including the extended frequency band (10, 12, 14 and 16 kHz), as well as short- and long-latency acoustic evoked potentials (SLAEP and LLAEP). It was found out, that individuals with voice functional impairments had all of their hearing system's parts impaired to various extent, with more marked impairments in the central, rather than in the peripheral part of the hearing system.-It was shown, that hearing at 4-8 kHz, as well as with the extended frequency band, especially at 14-16 kHz, time patterns of acoustic evoked potentials (latencies of waves III and V of SLAEP, the interpeak interval I-V, as well as the latency periods of the LLAEP components P2 and N2) could be useful in professional selection of individuals of voice- and -speech professions and for solving lavor expertise matters. Of those individuals with normal voice but systematic vocal stress, 17,5 % had impaired hearing at 14 and 16 kHz, as well as significant latency prolongation of the LLAEP wave N2 with tone stimulation at 1 and 4 kHz. Apparently, individuals of voice- and-speech professions should be referred to as the risk group. It may well be, that extended band audiometry and acoustic evoked potentials time patterns could be useful in determining the thresholds between the normality and pathology in voice dysfunctions.

Kiev Research Institute of Otolaryngology Ministry of Health of Ukraine

 

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