Abstract
Objective: Prosody, an important aspect of spoken language, is defined as the emphasis placed on certain syllables, changes in tempo or timing, and variance in pitch and intonation. Most studies investigating expression and comprehension of prosody have focused primarily on emotional prosody and less extensively on supralexical prosody. The distinction is indeed important, as the latter conveys information such as interrogative or assertive mode, whereas the former delivers emotional connotation, such as happiness, anger, and sadness. These functions appear to rely on distinct neuronal networks, supported by functional neuroimaging studies that show activation of the right hemisphere, specifically in the right inferior frontal area during emotional detection.
Conclusion: This review summarizes the studies conducted on prosody impairment in Alzheimer's disease and other dementias, with emphasis on experiments designed to investigate the emotional vs. the supralexical aspect of speech production. We also discussed the available tools validated to test and quantify the prosodic impairment.
Keywords: Alzheimer's disease, dementia, frontotemporal dementia, language, mild cognitive impairment, prosody.
Current Alzheimer Research
Title:Prosodic Impairment in Dementia: Review of the Literature
Volume: 15 Issue: 2
Author(s): Sylwia Misiewicz , Adam M. Brickman and Giuseppe Tosto *
Affiliation:
- G.H. Sergievsky Center, Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, NY,United States
Keywords: Alzheimer's disease, dementia, frontotemporal dementia, language, mild cognitive impairment, prosody.
Abstract: Objective: Prosody, an important aspect of spoken language, is defined as the emphasis placed on certain syllables, changes in tempo or timing, and variance in pitch and intonation. Most studies investigating expression and comprehension of prosody have focused primarily on emotional prosody and less extensively on supralexical prosody. The distinction is indeed important, as the latter conveys information such as interrogative or assertive mode, whereas the former delivers emotional connotation, such as happiness, anger, and sadness. These functions appear to rely on distinct neuronal networks, supported by functional neuroimaging studies that show activation of the right hemisphere, specifically in the right inferior frontal area during emotional detection.
Conclusion: This review summarizes the studies conducted on prosody impairment in Alzheimer's disease and other dementias, with emphasis on experiments designed to investigate the emotional vs. the supralexical aspect of speech production. We also discussed the available tools validated to test and quantify the prosodic impairment.
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Cite this article as:
Misiewicz Sylwia , Brickman M. Adam and Tosto Giuseppe *, Prosodic Impairment in Dementia: Review of the Literature, Current Alzheimer Research 2018; 15 (2) . https://dx.doi.org/10.2174/1567205014666171030115624
DOI https://dx.doi.org/10.2174/1567205014666171030115624 |
Print ISSN 1567-2050 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5828 |
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