STRUCTURAL AND FUNCTIONAL CONSEQUENCES OF ACOUSTIC OVER-STIMULATION ON THE AUDITORY SYSTE

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PERFORMANCE INTENSITY PHONETICALLY BALANCE (PIPB)

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The study of relative intelligibility of spondees at different intensity levels is termed as articulation curve. Similarly the study of intelligibility of PB word list at different intensity level is termed as PIPB function or PIPB curve... The study of PIPB function helps in determining the differential diagnosis of cochlea and RCPs. Jerger and Jerger 1971 describe the use of PIPB function as the method of screening for disorders of central auditory nervous system. They observed that patients with normal hearing sensitivity shown the differences in the score as the intensity increased with shapes of PIPB curve goes on increasing with the increase in intensity level upto such level where plateau is reached where there is no improvement in score with further increase in intensity level. This similar curve is also obtained in patients with conductive hearing losses.. However it has been seen that in cases of RCPS as the intensity is increased the score reduces...
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THE BUFFALO MODEL

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The Buffalo Model is a conceptualization of auditory processing disorders (APD) based on the results of a three-test battery . Each test takes a different look at auditory processing and together they provide more than 30 indicators that help to identify APD and what types of problems it represents. Audiologists have long been interested in the diagnosis of central auditory disorders; starting in the days when the focus was identifying site-of-dysfunction in patients with brain lesions (Bocca et al., 1954). In the 1970s interest turned to the evaluation of APD in those who have learning and/or communicative problems (Katz & Illmer, 1972). Over the years more and more attention has been directed toward remediation of auditory processing difficulties (Katz & Burge, 1971; Sloan, 1986; Tallal, 1996; Musiek, 1999). First, this article will discuss the Buffalo Battery of tests and relate their results to categories of APD, which in turn will point to therapies and the expected...
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SPECIAL TESTS OF DIAGNOSTIC AUDIOLOGY

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INTRODUCTION All types of Audiometry are diagnostic since it contributes in some way to the ultimate localization of auditory disorder. For ex. The relationship between AC and BC thresholds is one of the principle tests for differentiating conductive hearing loss from Sensorineural hearing loss. The auditory disorders are broadly classified into: 1.      Peripheral Auditory System 2.      Central Auditory System On these lines, Audiological tests can be divided into 2 categories: 1.      Audiological tests suited to the evaluation of peripheral auditory system 2.      Audiological tests more appropriate to the evaluation of central auditory system. Auditory disorders are broadly classified as central and peripheral on the basis of location of cochlear nuclei i.e. the lesion distal to cochlear nucleus may be said to affect Peripheral Auditory sy...
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