Trial Outcomes & Findings for Improving Neurological Health in Aging Via Neuroplasticity-based Computerized Exercise (NCT NCT04149457)

One participant was withdrawn by the investigator prior to the start of the intervention.

Improving Neurological Health in Aging Via Neuroplasticity-based Computerized Exercise

Change from baseline and 3 months (post-intervention) for the 18F-fluoroethoxybenzovesamicol (FEOBV) standardized uptake value ratio (SUVR) in the Anterior Cingulate Cortex as measured through Positron Emission Tomography (PET) ligand imaging. Higher score is better.

The EXAMINER (Executive Abilities: Measures and Instruments for Neurobehavioral Evaluation and Research) is a computer-based battery of executive function tests yielding a single Executive Composite score across three subtests (Flanker, Anti-Saccades, Set-Shifting). The Executive Composite is a latent trait estimate using Empirical Bayes scoring from item-response theory and is therefore unitless and unbounded. For reference, validation studies report mean scores of 0.70 in healthy adults, 0.29 in patients with mild cognitive impairment, and -0.20 in patients with Alzheimer's disease. This outcome reports change in Executive Composite Score from baseline, calculated as the score at 3 months minus baseline and the score at 6 months minus baseline. Higher values indicate better executive functioning.

This is a computerized assessment that serves as a positive control for task learning. Raw scores are defined as the exposure duration at approximately 80% criterion accuracy in milliseconds accuracy in identification of central and peripheral targets. The best possible raw score is 32 milliseconds, and the worst possible score is 3162 milliseconds. Change was calculated as the score at 3 months minus the score at baseline, and as the score at 6 months minus the score at baseline. Lower values in milliseconds reflect better Useful Field of View performance.

This is a computerized assessment that serves as a positive control for task learning. A single target frequency level required for users to achieve at least 80% accuracy in target and foil identification for a pre-specified target image presented among similar foil images. Target frequency level is recorded as an integer ranging from 1 to 7, where 1 corresponded to the easiest condition (40% target frequency among foils) and 7 represented the most challenging condition (10% target frequency among foils). Change was calculated as the score at 3 months minus the score at baseline, and as the score at 6 months minus the score at baseline. Higher scores indicate better performance.