K. Kochanek - Academia.edu (original) (raw)
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ISCTE - University Institute of Lisbon (ISCTE-IUL)
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Papers by K. Kochanek
International Journal of Audiology, 1983
ECoG and ABR recordings were performed on 22 young, normal-hearing persons, before and after expo... more ECoG and ABR recordings were performed on 22 young, normal-hearing persons, before and after exposure to fatiguing noise. Temporary Threshold Shift (TTS) of up to 35 dB at 4-6 kHz was induced by octave band noise with centre frequency at 2.8 kHz. The latency of waves I, III, V and ACAP (Auditory Compound Action Potential) and intervals between waves I-III, III-V, I-V and ACAP-V were analysed as functions of stimulus intensity in pre- and post-exposure recordings. In post-exposure recordings a threshold elevation, a significant increase of latency and unaltered intervals between the successive waves and ACAP were observed. It was concluded that the noise-induced auditory fatigue, measured as TTS, originates within the cochlea and is transferred to the auditory pathways. The great intersubject variability of the data obtained indicates that the TTS may be a useful measure of individual sensitivity to noise, but prognosis on the presumed Permanent Threshold Shifts (PTS) based on the evaluation of TTS would seem doubtful.
International Congress Series, 2003
The aim of this study was to determine the correlation between the maximum comfort loudness level... more The aim of this study was to determine the correlation between the maximum comfort loudness levels (MCL) and the electrical elicited stapedius reflex threshold (ESRT).
International Congress Series, 2003
Hearing screening programs in school age children are necessary for early detection and treatment... more Hearing screening programs in school age children are necessary for early detection and treatment of hearing impairments in this population. The Institute of Physiology and Pathology of Hearing have developed and implemented hearing screening program at schools in Poland based on multimedia hearing screening system ''I can hear''. The system consists of a computer program installed on PC, an acoustic calibrator and earphones. The testing procedure involves automated questionnaire analysis, pure tone audiometric test and the evaluation of speech intelligibility in noise.
International Journal of Audiology, 1983
ECoG and ABR recordings were performed on 22 young, normal-hearing persons, before and after expo... more ECoG and ABR recordings were performed on 22 young, normal-hearing persons, before and after exposure to fatiguing noise. Temporary Threshold Shift (TTS) of up to 35 dB at 4-6 kHz was induced by octave band noise with centre frequency at 2.8 kHz. The latency of waves I, III, V and ACAP (Auditory Compound Action Potential) and intervals between waves I-III, III-V, I-V and ACAP-V were analysed as functions of stimulus intensity in pre- and post-exposure recordings. In post-exposure recordings a threshold elevation, a significant increase of latency and unaltered intervals between the successive waves and ACAP were observed. It was concluded that the noise-induced auditory fatigue, measured as TTS, originates within the cochlea and is transferred to the auditory pathways. The great intersubject variability of the data obtained indicates that the TTS may be a useful measure of individual sensitivity to noise, but prognosis on the presumed Permanent Threshold Shifts (PTS) based on the evaluation of TTS would seem doubtful.
International Congress Series, 2003
The aim of this study was to determine the correlation between the maximum comfort loudness level... more The aim of this study was to determine the correlation between the maximum comfort loudness levels (MCL) and the electrical elicited stapedius reflex threshold (ESRT).
International Congress Series, 2003
Hearing screening programs in school age children are necessary for early detection and treatment... more Hearing screening programs in school age children are necessary for early detection and treatment of hearing impairments in this population. The Institute of Physiology and Pathology of Hearing have developed and implemented hearing screening program at schools in Poland based on multimedia hearing screening system ''I can hear''. The system consists of a computer program installed on PC, an acoustic calibrator and earphones. The testing procedure involves automated questionnaire analysis, pure tone audiometric test and the evaluation of speech intelligibility in noise.