• 2021 (Vol.35)

Threshold duration of sound signals for their sources approaching and withdrawing under condition of high-frequency hearing loss modeling

© 2018 I. G. Andreeva, A. P. Gvozdeva, E. A. Ogorodnikova

Sechenov Institute of evolutionary physiology and biochemistry of RAS, 194223 Saint-Petersburg, Torez ave., 44, Russia
Pavlov Institute of physiology of RAS, 199034 Saint-Petersburg, Makarova embank., 6, Russia

Received 10 Apr 2018

An assessment of ability to determine direction of sound images motion (approaching or withdrawing) in case of high- frequency hearing loss modeling, which takes place under condition of age-related sensorineural hearing loss, was performed. The modeling was made by filtration of broadband signals, which formed illusions of approaching and withdrawing sound sources. Frequency response of the filters corresponded to mild and moderate sensorineural hearing loss. The duration of signals varied in the range 125–400 ms. The data shown that the temporal threshold was equal for three experimental series (control, models of mild and moderate hearing loss) and amounted 150 ms. In case of control series and mild sensorineural hearing loss modeling for all employed durations of stimuli subjects made mistakes in evaluation of sound moving direction predominantly for withdrawing signals. The number of incorrect responses for approaching signals increased substantially under condition of moderate sensorineural hearing loss model. The increase was observed for both short and long durations of signals. At the same time, overall amount of mistakes increased insignificantly compared to control condition.

Key words: sound localization, sensorineural hearing loss, symmetrical hearing loss, motion perception, threshold duration

DOI: 10.1134/S0235009218040029

Cite: Andreeva I. G., Gvozdeva A. P., Ogorodnikova E. A. Porogovaya dlitelnost zvukovykh signalov dlya otsenki priblizheniya i udaleniya ikh istochnika pri modelirovanii snizheniya vysokochastotnogo slukha [Threshold duration of sound signals for their sources approaching and withdrawing under condition of high-frequency hearing loss modeling]. Sensornye sistemy [Sensory systems]. 2018. V. 32(4). P. 277-284 (in Russian). doi: 10.1134/S0235009218040029

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