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Возможные причины изменения чувствительности у детей с глубокими нарушениями зрения к временным задержкам в условиях дихотической стимуляции

Возможные причины изменения чувствительности у детей с глубокими нарушениями зрения к временным задержкам в условиях дихотической стимуляции

Abstract

Было обследовано 96 детей 7-18 лет с глубокими нарушениями зрения, у которых с помощью метода дихотической стимуляции моделировали ощущение движения звукового образа (ЗО). Использовались серии коротких звуковых щелчков с изменяющейся в автоматическом режиме интерауральной временной задержкой (Δt). При начальной Δt=0 интерауральную задержку изменяли с шагом ±23 мкс и определяли минимальную Δt, при которой испытуемый начинал чувствовать движение ЗО из центра субъективного звукового поля (СЗП). Было установлено, что у детей с глубокими нарушениями зрения чувствительность к вводимым Δt ниже, чем у их здоровых сверстников. Полученные результаты не согласуются с мнением тех авторов, которые считают, что пространственный слух слепых и слабовидящих компенсаторно улучшается по сравнению с нормально видящими.

96 children 7-18 years old with considerable visual disorders were examined by the method of dichotic stimulation to model the feeling of sound image (SI) movement. Series of short sound clicks with an interaural time delay, changing in an automatic mode, were used. Interaural time delay was changing from Δt=0 with a step of ±23 μs, and the minimum Δt at which the tested subject began to feel the movement of SI from the center of subjective sound field (SSF) was measured. It was established that sensitivity to Δt of visually impaired children was lower than of healthy persons of the same age. The obtained results are not consistent with the opinion of those authors who believe that spatial hearing blind and visually impaired compensatory improved compared to the normally sighted.

Keywords

ИНТЕРАУРАЛЬНАЯ ВРЕМЕННАЯ ЗАДЕРЖКА, ЗВУКОВОЙ ОБРАЗ, ДИХОТИЧЕСКАЯ СТИМУЛЯЦИЯ, СУБЪЕКТИВНОЕ ЗВУКОВОЕ ПОЛЕ, НАРУШЕНИЕ ЗРЕНИЯ

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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