Multicenter validation of a bedside antisaccade task as a measure of executive function.

Area of Science:

• Neuroscience
• Cognitive Psychology
• Clinical Neurology

Background:

• Executive function assessment is crucial in clinical studies.
• Traditional antisaccade (AS) tasks often require specialized equipment.
• A need exists for a standardized, accessible AS task for multicenter research.

Purpose of the Study:

• To develop and validate a simplified, equipment-free antisaccade (AS) task, termed the bedside AS (BAS) task.
• To establish the BAS task as a reliable measure of executive function in diverse clinical populations.
• To facilitate the use of AS task measures in multicenter clinical studies.

Main Methods:

• The bedside AS (BAS) task involved 40 AS trials on a laptop.
• BAS performance was compared to eye-tracker AS performance in normal elders (NE), mild cognitive impairment (MCI), and dementia (n=33).
• Neuropsychological domain specificity and validation were assessed in larger cohorts (n=103 and n=397) across multiple centers.

Main Results:

• BAS task performance strongly correlated with laboratory AS task performance.
• BAS performance demonstrated the strongest association with executive function measures, particularly the informant-based Frontal Systems Behavior Scale.
• These associations remained significant even after controlling for disease severity and processing speed.

Conclusions:

• The bedside AS (BAS) task is a simple and valid tool for assessing executive function.
• The BAS task is suitable for use in studies of aging and neurologic diseases.
• This standardized task can be effectively utilized in multicenter clinical settings.