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Middle-latency auditory responses in neurological diseases
Paulo Roberto Pialarissi1, Francisco S Almeida, Lucrécia C B M Camanducaia
1Universidade de São Paulo, SP. pieralisi@ig.com.br
Unlabelled:
The presence of middle-latency evoked auditory potentials allows for integrity evaluation of both peripheral and the central auditory systems, and also, that of the nucleus and auditory pathways of sub-cortical region. They have also been used to study alterations of these structures in different neurological diseases.
Aims:
the aim of this study is to verify the latency of the middle-latency evoked auditory potentials and detect the presence of any deflections in subjects with neurological diseases.
Materials And Methods:
In a clinical and prospective trial, 20 patients having central neurological diseases of various etiologies were evaluated and, positive and negative deflections produced by the middle-latency evoked auditory potentials in these patients were analyzed.
Results:
Data was statistically analyzed and showed significant modifications in middle-latency evoked auditory potentials.
Conclusion:
The authors concluded that patients with neurological disorders have either wave suppression or enlarged latency periods in relation to normal subjects.
