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Effects of PFC tDCS on Cognitive Control, Attention Lapses and Coordinated Neural Activity in the Theta and Alpha Bands

University of California, Davis · NCT04885322

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Opens the official ClinicalTrials.gov record, with the study team’s contacts. Bored Studies doesn’t enroll anyone.

Key facts

Compensation
Not posted. Ask the study team before screening.
Who can join
Ages 18–50 · All sexes
Healthy volunteers
Accepted
Study type
Interventional · Not applicable
Target enrollment
75
US sites recruiting
1
Study start
April 14, 2021
Record last updated
December 5, 2025

Status re-checked against ClinicalTrials.gov within the last 12 hours.

What the study is about

The purpose of this study is to better understand the neural correlates of higher-order cognition, both in the healthy brain and in schizophrenia, and to determine how these mechanisms are modulated by transcranial direct current stimulation (tDCS) at frontal and occipital scalp sites. Testing the effects of tDCS at these scalp sites on cognitive task performance will help us understand the roles of the brain regions corresponding to these sites during higher-order cognitive processing (language comprehension, cognitive control, and related attention and memory processes). Behavioral and electrophysiological (EEG) measures will be used to assess cognitive performance. Our overarching hypothesis is that stimulating prefrontal circuits with tDCS can improve cognitive control performance, and ultimately performance on a range of cognitive tasks, as compared to stimulating a different cortical region (occipital cortex) or using sham stimulation.

This study is solely intended as basic research in order to understand brain function in healthy individuals and individuals with schizophrenia. This study is not intended to diagnose, cure or treat schizophrenia or any other disease.

Being studied: Transcranial Direct Current Stimulation

Conditions: Healthy

Eligibility criteria

Copied from the official record. The study team makes the final decision at screening.

Show full criteria

Inclusion Criteria

  • between ages of 18 and 50
  • ability to sufficiently speak and understand English so as to be able to understand and complete cognitive tasks
  • ability to give valid informed consent

Exclusion Criteria

  • no history of head trauma
  • no current or previous history of treatment with psychotropic medication
  • corrected vision 20/30 or better
  • tDCS/MRI contraindications, including: pregnancy, ferrous metal in any part of the body, serious medical conditions, claustrophobia, metallic implants, skin damage, conditions such as eczema at electrode sites, cranial pathologies

Recruiting US locations

  • Imaging Research Center

    Sacramento, CA 95817

    Site contact: Vanessa Zarubin, BS/BA · 916-734-3749 · vczarubin@ucdavis.edu

Study contacts (from the official record)

  • Minhtrang Chu · 1-916-734-1482 · mihchu@ucdavis.edu
All healthy volunteers studies in California →
Effects of PFC tDCS on Cognitive Control, Attention Lapses and… (NCT04885322) | Bored Studies