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Related Experiment Video

Updated: Feb 21, 2026

Adapting Human Videofluoroscopic Swallow Study Methods to Detect and Characterize Dysphagia in Murine Disease Models

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Relationship Between Cognitive Function and Dysphagia After Stroke.

Soo Yung Jo¹, Jeong-Won Hwang¹, Sung-Bom Pyun¹

¹Department of Physical Medicine and Rehabilitation, Korea University College of Medicine, Seoul, Korea.

Annals of Rehabilitation Medicine

|October 4, 2017

Summary

Cognitive deficits, particularly in visual and executive attention, are linked to post-stroke dysphagia severity in supratentorial stroke patients. These cognitive functions significantly impact swallowing ability, especially in the oral phase.

Keywords:

Attention Cognition Deglutition disorders Executive function Stroke

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Area of Science:

Neurology
Swallowing Disorders
Cognitive Neuroscience

Background:

Post-stroke dysphagia is a common complication affecting patient recovery.
Cognitive impairments are frequently observed after stroke but their specific relationship with dysphagia requires further investigation.

Purpose of the Study:

To characterize cognitive deficits in patients with post-stroke dysphagia.
To analyze the association between cognitive dysfunction and dysphagia severity in supratentorial stroke.

Main Methods:

55 patients with supratentorial stroke were assessed for dysphagia using the dysphagia severity scale (DSS) and videofluoroscopic swallowing studies (VFSS).
Comprehensive cognitive function tests were administered to compare performance between dysphagic and non-dysphagic groups.
Correlations between cognitive scores, DSS, and swallowing parameters were analyzed.

Main Results:

Dysphagic patients exhibited significantly lower cognitive test scores compared to non-dysphagic patients.
Dysphagia severity correlated with visual span backward, Trail Making Tests A and B, and Raven's Progressive Matrices scores.
Visual attention and executive attention were significantly associated with the presence and severity of dysphagia.

Conclusions:

Cognitive function is significantly associated with the presence and severity of post-stroke dysphagia.
Visual attention and executive functions play a crucial role in the oral phase of swallowing in stroke patients with supratentorial lesions.