Related Experiment Video
Updated: May 19, 2026
17:06
Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging
Published on: November 8, 2012
26.1K
Comparison of structural connectomes for modeling deep brain stimulation pathway activation.
Ketan Mehta1, Angela M Noecker1, Cameron C McIntyre2
1Department of Biomedical Engineering, Duke University, Durham, NC, United States.
Neuroimage
|April 13, 2025
Summary
Different brain connectomes significantly alter deep brain stimulation (DBS) pathway predictions. This variability questions the reliability of connectomic DBS studies lacking validation.
Area of Science:
- Neuroscience
- Computational Biology
- Medical Imaging
Background:
- Structural brain connectomes are crucial for predicting deep brain stimulation (DBS) pathways.
- Existing connectomes vary in technical parameters, parcellation, and construction methods, leading to potential inconsistencies.
Purpose of the Study:
- To compare and quantify variability in DBS pathway activation predictions across different structural connectomes.
- To assess the impact of using identical electrode placements and stimulation volumes with diverse connectomes.
Main Methods:
- Analyzed four structural connectomes: Horn, Yeh, Petersen, and Majtanik.
- Performed DBS simulations at four common electrode locations (subthalamic nucleus, thalamus nuclei, ventral capsule).
Main Results:
- Connectome choice significantly impacted DBS pathway activation predictions, showing little congruence.
- Tractography-based connectomes (Horn, Yeh) offer broad coverage but lack anatomical validity.
- Histology-based connectomes (Petersen, Majtanik) are anatomically realistic but target-specific.
Conclusions:
- Inconsistent DBS network connectivity inferences raise concerns about the reliability of connectomic DBS studies.
- Emphasizes the need for anatomical and electrophysiological validation in connectomic DBS research.
Related Concept Videos
01:26Heart Failure Drugs: Inhibitors of Renin-Angiotensin System
The activation of the sympathetic nervous system and the renin-angiotensin-aldosterone system (RAAS) contributes to cardiac remodeling, and inhibiting the RAAS is a pharmacological target in heart failure management. As a result, neurohumoral modulation is a crucial treatment principle for managing heart failure. This approach involves using medications like ACE inhibitors (ACEIs), angiotensin receptor blockers (ARBs), β-blockers, mineralocorticoid receptor antagonists (MRAs), and neutral...
01:28Mitral Regurgitation IV: Nursing Management
Mitral regurgitation (MR) is a condition where the mitral valve does not close properly, leading to the backward flow of blood from the left ventricle into the left atrium during systole. This condition can arise from various causes, including rheumatic fever, infective endocarditis, or degenerative valve disease. Effective nursing management is crucial to optimizing patient outcomes and involves comprehensive assessment and targeted interventions.Comprehensive Patient AssessmentA detailed...
01:30Heart Failure IV: Classification and Diagnostic Evaluation
Heart failure can be classified in various ways, with the most common classifications based on physical activity limitations, disease progression, severity, and treatment strategies.The Functional Classification of Heart Failure divides patients into four categories based on physical activity limitation due to symptom burden.Class I: Patients in this class have cardiac disease but no physical activity limitations. Ordinary activities like walking, climbing stairs, or routine tasks do not cause...
01:30Heart Failure V: Medical Management
Medical Management of Acute Decompensated Heart Failure (ADHF)The primary goals of therapy for patients hospitalized with acute decompensated heart failure (ADHF) include:Relieving symptomsOptimizing volume statusSupporting oxygenation and ventilationMaintaining cardiac output (CO) and end-organ perfusionIdentifying and addressing the cause of ADHFPreventing complicationsProviding patient education on factors precipitating HF exacerbationPlanning for dischargeOngoing monitoring and assessment...
01:22Heart Failure VI: Adjunct Therapies
Additional therapies for treating patients with heart failure (HF) may include procedural interventions, supplemental oxygen, the management of sleep disorders, and nutritional therapy.Procedural InterventionsImplantable Cardioverter-Defibrillator: For patients at risk of life-threatening arrhythmias due to severe left ventricular dysfunction, an Implantable Cardioverter-Defibrillator (ICD) can detect and terminate these arrhythmias, preventing sudden cardiac death and improving survival rates.
01:30Heart Failure VII: Nursing Interventions
The first step in nursing management of a patient with heart failure involves thoroughly assessing the patient's medical history.Subjective Data: Obtain the patient's medical history of coronary artery disease, hypertension, myocardial infarction, and symptoms like dyspnea, orthopnea, and paroxysmal nocturnal dyspnea.Objective Data: Conduct a physical examination to identify findings such as jugular vein distention, pulmonary crackles, tachycardia, murmurs, peripheral edema, and vital signs,...