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Related Experiment Video

Updated: Jun 15, 2025

A Dual Task Procedure Combined with Rapid Serial Visual Presentation to Test Attentional Blink for Nontargets

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Vigilant Attention During Cognitive and Language Processing in Aphasia.

Dannielle Hibshman¹, Ellyn A Riley¹

¹Department of Communication Sciences and Disorders, Syracuse University, NY.

Journal of Speech, Language, and Hearing Research : JSLHR

|August 28, 2024

Summary

Persons with aphasia (PWA) show increased vigilant attention during language tasks compared to non-language tasks. This suggests PWA may allocate more attentional resources for language processing after stroke.

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Area of Science:

Neuroscience
Cognitive Psychology
Speech and Language Pathology

Background:

Individuals with aphasia (PWA) often exhibit attention deficits post-stroke, impacting cognitive and language functions.
Understanding attention patterns in PWA is crucial for effective rehabilitation strategies.

Purpose of the Study:

To investigate vigilant attention during linguistic and nonlinguistic tasks in PWA using electroencephalogram (EEG).
To compare attention states between PWA and control participants during tasks with varying cognitive demands.

Main Methods:

Collected continuous EEG data from PWA and controls during a sentence-reading (linguistic) task and a shape-discrimination (nonlinguistic) task.
Utilized a validated EEG algorithm to classify vigilant attention into high, moderate, distracted, or no attention states for each trial.
Measured task accuracy and the duration spent in each attention state.

Main Results:

PWA made more errors on the linguistic task than controls; performance was similar on the nonlinguistic task.
Controls spent more time in a moderate-attention state during the linguistic task compared to PWA.
PWA exhibited significantly more high-attention states during the linguistic task versus the nonlinguistic task, unlike controls.

Conclusions:

PWA demonstrate heightened vigilant attention during demanding linguistic tasks.
Results suggest PWA may reallocate attentional resources, prioritizing language processing over other cognitive tasks.