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Categorical perception was investigated in a series of experiments on the perception of melodic musical intervals (sequential frequency ratios). When procedures equivalent to those typically used in speech-perception experiments were employed, i.e., determination of identification and discrimination functions for stimuli separated by equal physical(More)
Schizophrenic groups rated low (reactive), intermediate, and high (process) on the Elgin Prognostic Scale and a group of normal Ss discriminated between matched and unmatched pairs of nonsense syllables under varying rates of input. Continuous PGR measures were recorded as the Ss responded to the syllable pairs. Stimulus overload (defined as the extent to(More)
There are few endogenous factors related to susceptibility to damage from noise other than those that affect the transmission of sound to the cochlea--i.e., characteristics of the outer and middle ears--and a few substances that affect the oxygen reaching the cochlea, including oxygen intake itself. Susceptibility has not been shown to be dependent on(More)
OBJECTIVE Safety and effectiveness of acoustic reflex tests are important issues because these tests are widely applied to screen for retrocochlear pathology. Previous studies have reported moderately high sensitivity and specificity for detection of acoustic neuroma. However, there have been reports of possible iatrogenic hearing loss resulting from(More)
  • W D Ward
  • 1983
The main problem in attempting to estimate auditory handicap from easily measured indices such as pure-tone sensitivity or intelligibility scores for numbers, words or sentences is that no criterion to establish validity has received wide acceptance. Even though few would disagree with the definition of handicap accepted by the American Medical Association:(More)
The success of "auditory analgesia" in dental operations may be a result of distraction, suggestion, or cross-sensory masking, or of a combination of the three. An attempt to separate these influences was made by measuring the change in sensitivity to electrical stimulation of the teeth in typical dental patients upon presentation of loud white noise. No(More)