10:50AM BST 09 Jun 2014. â¢ DONALD DUCK was created by Walt Disney when he heard Clarence Nash doing his duck voice while reciting Mary Had a Little Lamb. Disney wanted a character that was more negative than Mickey Mouse, so the bad-tempered Duck was born.
Auditory brainstem response (ABR) audiometry is a neurologic test of auditory brainstem function in response to auditory (click) stimuli. First described by Jewett and Williston in 1971, ABR audiometry is the most common application of auditory evoked responses. Test administration and interpretation is typically performed by an audiologist. This article provides an overview of the test and its most common applications.
The size of the response is also measured. Nerves from different areas of the body may be tested. Types of responses are: 1  Visual evoked response or potential (VER or VEP), which is when the eyes are stimulated by looking at a test pattern. 2  Auditory brain stem evoked response or potential (ABER or ABEP), which is when hearing is stimulated by listening to a test tone.