Abstract
This study was conducted to determine whether acoustic analysis of speech prosody can assist in differential diagnosis of cognitive impairment. Speech samples describing the Cookie Theft picture were obtained from the DementiaBank and analyzed acoustically using 22 speech prosody features via the Praat software. Included in this speech dataset were 10 people with dementia of the Alzheimer’s type, 9 people with mild cognitive impairment, 5 people with vascular dementia, and 10 neurologically healthy controls. The principal components analysis, and Mahalonabis distance tests revealed that using acoustic measures of speech prosody may be a functional method for differential diagnosis of the cognitive impairment types.
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