Effect of A Hearing Loss
A number of studies have looked into the effect of hearing loss on interaural time differences. In their review of localisation and lateralisation studies, Durlach, Thompson, and Colburn (1981),cited in Moore (1996) found a “clear trend for poor localization and lateralization in people with unilateral or asymmetrical cochlear damage.” This is due to the difference in performance between the two ears. In support of this, they did not find significant localisation problems in individuals with symmetrical cochlear losses. In addition to this, studies have been conducted into the effect of hearing loss on the threshold for interaural time differences. The normal human threshold for detection of an ITD is up to a time difference of 10μs (microseconds). Studies by Gabriel, Koehnke, & Colburn (1992), Häusler, Colburn, & Marr (1983) and Kinkel, Kollmeier, & Holube (1991)(cited by Moore, 1996) have shown that there can be great differences between individuals regarding binaural performance. It was found that unilateral or asymmetric hearing losses can increase the threshold of ITD detection in patients. This was also found to apply to individuals with symmetrical hearing losses when detecting ITDs in narrowband signals. However, ITD thresholds seem to be normal for those with symmetrical losses when listening to broadband sounds.
Read more about this topic: Interaural Time Difference
Famous quotes containing the words effect of, effect, hearing and/or loss:
“I guess what I’ve really discovered is the humanizing effect of children in my life—stretching me, humbling me. Maybe my thighs aren’t as thin as they used to be. Maybe my getaways aren’t as glamorous. Still I like the woman that motherhood has helped me to become.”
—Susan Lapinski (20th century)
“Man is endogenous, and education is his unfolding. The aid we have from others is mechanical, compared with the discoveries of nature in us. What is thus learned is delightful in the doing, and the effect remains.”
—Ralph Waldo Emerson (1803–1882)
“To-night she will spread her brown hair on his pillow,
But I shall be hearing the harsh cries of wild fowl.”
—Patrick MacDonogh (1902–1961)
“... the loss of belief in future states is politically, though certainly not spiritually, the most significant distinction between our present period and the centuries before. And this loss is definite. For no matter how religious our world may turn again, or how much authentic faith still exists in it, or how deeply our moral values may be rooted in our religious systems, the fear of hell is no longer among the motives which would prevent or stimulate the actions of a majority.”
—Hannah Arendt (1906–1975)