Clinical Trials Logo

Clinical Trial Summary

The overall objective of this study is to investigate the neural correlate in retrieval memory task.

The aim of the study is to understand the undergoing changes in late positive ERP component during retrieval memory task when stimulating the posterior cingulate cortex (PCC) with High Definition Transcranial Direct Current Stimulation (HD-tDCS).


Clinical Trial Description

Retrieval memory is supported by distinct retrieval process known as recollection and familiarity. These two process have been associated with distinct event related potentials (ERPs). At the time of retrieval, familiarity is associated with modulation of the FN400, an enhanced positivity for old items relative to new items observed from approximately 400-600ms post stimulus onset. The FN400 tends to have mid-frontal scalp distribution which can extend to left and right frontal areas and central midline regions. In contrast, recollection has been linked with modulation of positive going waveform that emerges approximately 600ms post stimulus and is typically maximal over parietal sites and referred to as late positive component (LPC). In addition, FN400 is found to increase gradually as a function of item retrieval confidence whereas LPC is limited to high confidence retrieval response.

High Definition transcranial Direct Current Stimulation (HD-tDCS ) is a non-invasive neuromodulation technique. Compared to the standard bipolar montage used by the conventional tDCS, it uses arrays of smaller, specially designed electrodes to deliver a constant and low current directly to the cortical brain areas to increase the spatial focality. Studies show that the cortical area undergoing stimulation with HD-tDCS is more restricted compared to the standard bipolar montage of conventional tDCS. Moreover, tDCS has been proposed as a therapeutic procedure in various diseases and tDCS in healthy adults have demonstrated to improve cognitive and memory performance, but information regarding the effects of HD-tDCS targeting the PCC and its impact on memory retrieval is scarce. By targeting the PCC area by HD-tDCS, we want to introduce a safer, easier-to-use and more accurate non-invasive neuromodulation procedure. The dysfunctions of posterior cingulate cortex hav been linked to a range of psychiatric and neurological condition such as Alzheimer's disease, schizophrenia, autism, depression and attention deficit hyperactivity disorder, as well as aging. It shows increased activity when subject retrieve autobiographical memories suggests its internal orientated function. PET and ERP combined studies have shown greater blood flow medial temporal lobe with a brief late positive ERP component in PCC. Therefore, in this study we aim to understand whether HD-tDCS targeting the PCC can modulate the late positive ERP component. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03319134
Study type Interventional
Source The University of Texas at Dallas
Contact
Status Completed
Phase N/A
Start date September 18, 2017
Completion date January 30, 2020

See also
  Status Clinical Trial Phase
Active, not recruiting NCT04677920 - The Healthy Cookie Energy Study: Understanding How Healthy Cookies Affect Mitochondrial Biology N/A
Active, not recruiting NCT03312920 - Investigating Memory Retrieval Improvement in Healthy Subjects N/A
Completed NCT03309072 - Investigating Accelerated Learning and Memory in Healthy Subjects Using a Face Name Memory Task N/A
Completed NCT03289832 - Effect of Orally Delivered Phytochemicals on Aging and Inflammation in the Skin N/A
Enrolling by invitation NCT06133530 - Human Milk Oligosaccharides (HMOs) and Gut Microbiota, Immune System in Antarctica N/A
Completed NCT05141903 - Dietary Supplement With and Without a Probiotic and/or Antibiotic
Completed NCT01689259 - Comparative Pharmacokinetics and Safety of TNX-102 SL Tablets and Cyclobenzaprine Oral Tablet in Healthy Adults Phase 1
Completed NCT01187875 - Resistant Starch and Satiety Phase 0
Completed NCT03312699 - Effects of Aging on Primary and Secondary Vaccine Responses in a 15-Year Longitudinal Cohort Phase 1
Recruiting NCT04104360 - Galacto-oligosaccharides and Intestinal Activity N/A
Completed NCT03228693 - Gene Expression and Biomarker Profiling of Keloid Skin N/A
Active, not recruiting NCT04146532 - Aspirin Effects on Emotional Reactions Early Phase 1
Completed NCT04206293 - A Study to Evaluate The Impact on Skin Quality Attributes by Juvederm® Volite Injection on Healthy Volunteers N/A
Recruiting NCT06011018 - Comparison of Effects of Mirror Therapy Combined With Neuromuscular Electrical Stimulation or Binaural Beats Stimulation on Cortical Excitability, Heart Rate Variability and Lower Limb Motor Function in Patients With Stroke N/A
Completed NCT05093205 - STUDY TO EVALUATE THE EFFECT OF PF-06882961 ON SINGLE DOSE ATORVASTATIN, MEDAZOLAM AND ORALCONTRACEPTIVE PHARMACOKINETICS IN HEALTHY ADULT PARTICIPANTS Phase 1
Completed NCT04596709 - Investigation of Blood Glucose and Insulin Response After Intake of Vitalose N/A
Completed NCT04272450 - Respiratory Muscle Strength in Different Age Groups
Completed NCT02044679 - Evaluation of Spot Urine as a Biomarker of Fluid Intake in Real Life Conditions N/A
Completed NCT01402973 - Pilot Study of a Dietary Intervention Based Upon Advanced Glycation End Products N/A
Completed NCT01322503 - Susceptibility of Human Volunteers With Different Histo-Blood With Different Histo-Blood Group Antigens to Norovirus Phase 1