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Dual-Task Stroop Paradigm for Detecting Cognitive Deficits in High-Functioning Stroke Patients
Published on: December 16, 2022
Discourse coherence and cognition after stroke: a dual task study
Yvonne Rogalski1, Lori J P Altmann, Prudence Plummer-D'Amato
1Department of Communicative Disorders, University of Florida, Gainesville, FL 32611, USA. rogalski@phhp.ufl.edu
Journal of Communication Disorders
|March 12, 2010
Summary
Maintaining global coherence in discourse is cognitively demanding for stroke survivors, unlike local coherence. Cognitive function significantly impacts global coherence, suggesting distinct cognitive processes support different coherence types.
Area of Science:
- Cognitive Science
- Neuroscience
- Linguistics
Background:
- Discourse coherence, both global (topic maintenance) and local (utterance-to-utterance flow), is thought to rely on cognitive resources.
- Stroke survivors often experience cognitive impairments that may affect their ability to maintain coherence in speech.
Purpose of the Study:
- To investigate the relationship between cognitive variables and discourse coherence in mobility-impaired stroke survivors.
- To examine the impact of dual-tasking (talking while walking) on coherence maintenance.
- To explore potential differences in cognitive demands between global and local coherence.
Main Methods:
- Assessed coherence (global and local) in narrative discourse produced by stroke survivors under single-task and dual-task conditions.
- Correlated coherence measures with cognitive function assessments.
- Compared coherence performance between single-task (talking) and dual-task (talking and walking) conditions.
Main Results:
- Global coherence was significantly disrupted in stroke survivors, irrespective of single or dual task conditions.
- Global coherence strongly correlated with cognitive function measures.
- Local coherence did not show significant disruption or correlation with cognitive measures.
Conclusions:
- Maintaining global coherence appears more cognitively demanding than local coherence.
- Findings suggest global and local coherence may rely on distinct cognitive processes.
- Cognitive impairment in stroke survivors disproportionately affects global coherence maintenance.
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