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  • Title: Improved detection of auditory P3 abnormality in dementia using a variety of stimuli.
    Author: Attias J, Huberman M, Cott E, Pratt H.
    Journal: Acta Neurol Scand; 1995 Jul; 92(1):96-101. PubMed ID: 7572070.
    Abstract:
    The purpose of this study was to test the improved sensitivity of P3 abnormality in the detection of dementia using a variety of auditory stimuli. Improved detection was obtained using auditory stimuli that differed in their cognitive attributes and by using several P3 measures. These measures included P3 latencies and amplitudes relative to pure tone evoked P3s. Fourteen demented patients (mean age 79.2 years) and a matched normative group were tested. Abnormality of P3 latency for pure tone targets was found in ten patients, equivalent to a hit-rate of 72%. The hit-rate could be further increased by using phonemically and phonetically different types of auditory stimuli, thought to vary in their cognitive attributes. These findings underscore the importance of using a variety of stimuli in testing demented patients.
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