Human Ear The<unk>  (also known as the threshold<unk>  or TTDT) is used in audiology to detect and measure auditory fatigue. It was developed by Raymond Carhart in 1957. In people with normal hearing, a<unk>  whose intensity is only slightly above their absolute threshold of hearing can be heard continuously for 60 seconds. The<unk>  produces a measure of the "decibels of<unk> ", i.e. the number of decibels above the patient's absolute threshold of hearing that are required for the<unk>  to be heard for 60 seconds. A<unk>  of between 15 and 20 decibels is indicative of cochlear hearing loss. A<unk>  of more than 25 decibels is indicative of damage to the vestibulocochlear nerve.
Tone decay test
Cover test
Tine test
Box and Blocks Test
Modified Ashworth scale
Drop arm test
Hawkins–Kennedy test
Kastle–Meyer test