Clinical Trials Logo

Clinical Trial Summary

Many disorders where attentional problems are a hallmark, such as Alzheimer's disease and schizophrenia, display abnormal regulation of the so-called default network of resting brain function that maintains internally directed thought when the mind is free to wander. There is indication that nicotine may improve attention by aiding the deactivation of the default network, and this mechanism may be of therapeutic benefit for the above disease states. The current project aims at providing a proof of concept by demonstrating that nicotinic drugs modulate default network function. The nicotinic agonist nicotine is hypothesized to improve attention by facilitating the down-regulation of default network activity, and the nicotinic antagonist mecamylamine is hypothesized to impair attention by impeding the down-regulation of default network activity during attentional task performance.


Clinical Trial Description

This study only enrolls healthy non-smokers. Participants perform attention tasks while undergoing functional Magnetic Resonance Imaging on three separate days. Across the three days, three difference conditions are tested in a double-blind manner, in randomized order. In all test sessions, participants receive a skin patch and swallow a capsule. In one session, both are a placebo. In another, the patch is a low-dose nicotine patch, and the capsule is a placebo. In another session, the patch is a placebo and the capsule contains a low dose of mecamylamine. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT01223404
Study type Interventional
Source University of Maryland, Baltimore
Contact
Status Completed
Phase N/A
Start date October 2010
Completion date September 2013

See also
  Status Clinical Trial Phase
Recruiting NCT03785171 - Predicative Value of Multimodal MRI in Moyamoya Disease
Not yet recruiting NCT03726788 - Intra Articular Injection of Botulinum Toxin Versus Corticoids in Gonarthrosis Phase 2
Active, not recruiting NCT01956409 - Proton MR Spectroscopy and 18F-Fluorocholine PET for Breast Cancer Diagnosis Phase 4
Completed NCT01660841 - Safety and Efficacy of Gadobutrol 1.0 Molar in Japanese Subjects for CNS Imaging Phase 3
Recruiting NCT03635619 - The Application of 3T MRI in Esophageal Cancer
Recruiting NCT03658343 - T2* MRI Analysis for Sarcoma N/A
Recruiting NCT04555642 - Early Diagnosis of Therapy-associated Cardiotoxicity Basing on Multi-tracer Multimodality PET/MRI
Active, not recruiting NCT03441867 - Neuroimaging Biomarker for Seizures N/A
Recruiting NCT04850001 - Cognitive Decline in Asymptomatic Intracranial Stenosis Patients: A 1-Year Follow-Up Study
Not yet recruiting NCT05816213 - Point-of-care Low-field MRI in Acute Stroke
Active, not recruiting NCT05498623 - MR Fingerprinting for Diagnostic of Prostate Cancer
Recruiting NCT04996615 - Artificial Intelligence Analysis for Magnetic Resonance Imaging in Screening Breast Cancer in High-risk Women
Recruiting NCT04257747 - Qualitative and Quantitative Evaluation of Vascular Flows of Radial, Ulnar and Interdigital Arterial Trees Under Normal and Pathological Conditions by 3 Tesla MRI N/A
Recruiting NCT05889117 - Brain Stimulation for Concussion N/A
Completed NCT02540967 - Drug Use Investigation of Gadovist.
Completed NCT05103189 - 4D-flow Cardiac MRI to Assess Pulmonary Arterial Pressure in Pulmonary Hypertension N/A
Completed NCT02567318 - Is the Volume of the Caudate Nuclei Associated With Area of Secondary Hyperalgesia? N/A
Recruiting NCT02834585 - Magnetic Resonance Imaging or Ultrasound in Soft Tissue Tumors (MUSTT) N/A
Active, not recruiting NCT02446665 - Disease Status in Primary Sclerosing Cholangitis by Elastography N/A
Completed NCT01721785 - Diagnostic Value of Novel MR Imaging Techniques for the Primary Staging and Restaging of Rectal Cancer N/A