Cognitive Task Performance During Titration Predicts Deep Brain Stimulation Treatment Efficacy: Evidence From a Case...

Area of Science:

• Neuroscience
• Behavioral Science
• Medical Technology

Background:

• Deep brain stimulation (DBS) titration for behavioral disorders lacks real-time clinical feedback.
• Current methods are insufficient for monitoring complex behavioral changes during DBS.
• A novel approach using cognitive testing during DBS titration was investigated.

Purpose of the Study:

• To evaluate the utility of cognitive testing during DBS titration for morbid obesity.
• To assess the correlation between acute cognitive changes and long-term treatment outcomes.
• To identify optimal deep brain stimulation parameters for treating morbid obesity.

Main Methods:

• A patient with morbid obesity undergoing nucleus accumbens DBS was tested using the flanker task during device titration.
• Electroencephalography (EEG) measured frontal engagement, and diffusion tensor imaging (DTI) analyzed brain connectivity.
• Cognitive performance and weight loss were tracked over 129 days with varying stimulation parameters.

Main Results:

• DBS titration with specific parameters led to acute cognitive improvement (p=0.033) and increased frontal EEG activity.
• These parameters also resulted in the most significant weight loss (47.8 lbs in 129 days).
• DTI revealed increased connectivity to dorsal attention networks and decreased connectivity to the default mode network with optimal parameters (p<0.01).

Conclusions:

• Targeted cognitive testing can effectively capture acute DBS effects during titration.
• Cognitive testing may serve as a predictive tool for long-term outcomes in DBS for behavioral disorders.
• This approach offers a potential method for optimizing DBS device titration and treatment efficacy.