Rhetorical Relations in the Speech of Alzheimer’s Patients and Healthy Elderly Subjects: An Approach from the RST
Document title: Rhetorical Relations in the Speech of Alzheimer’s Patients and Healthy Elderly Subjects: An Approach from the RST
Journal: Computación y sistemas
Database:
System number: 000560353
ISSN: 1405-5546
Authors: 1
1
2
3
1
Institutions: 1Universidad Nacional Autónoma de México, Instituto de Ingeniería, Ciudad de México. México
2Université du Québec, Ecole de Technologie Superieure, Montreal. Canadá
3Universidad Nacional de Educación a Distancia, Madrid. España
Year:
Season: Jul-Sep
Volumen: 22
Number: 3
Pages: 895-905
Country: México
Language: Inglés
Document type: Artículo
English abstract The study is aimed to extract discourse relations patterns in conversational speech of subjects with Alzheimer’s Disease (AD) and adults with healthy aging processes using the Rhetorical Structure Theory (RST). By means of the RST, we analyzed semi-structured interviews of native Spanish speakers. Seven subjects were in the mild, moderate or advanced stages of AD, and 6 were cognitively intact individuals. The procedure involved the segmentation of each conversational discourse into Semantic Dialog Units (SDUs), the labeling of their rhetorical relations and the construction of tree diagrams. We perform a correlation analysis to determine the significance of the use of rhetorical relations for each group. We found a significantly (p-value <.05) lower rhetorical relations production density in subjects with AD. We also observed that most rhetorical relations used by healthy older subjects were Elaboration, Concession, Interpretation, Non-Volitional Cause, Solutionhood and Volitional Result.
Disciplines: Ciencias de la computación
Keyword: Inteligencia artificial
Keyword: Rhetorical relations,
Conversation analysis,
Alzheimer’s disease,
Artificial intelligence
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