Trials / Completed
CompletedNCT03800030
Effect of Cross Frequency tACS on Cognitive Control
A Pilot Study Investigating the Effects of Cross Frequency Transcranial Alternating Current Stimulation on Cortical Oscillations Underlying Cognition
- Status
- Completed
- Phase
- N/A
- Study type
- Interventional
- Enrollment
- 26 (actual)
- Sponsor
- University of North Carolina, Chapel Hill · Academic / Other
- Sex
- All
- Age
- 18 Years – 35 Years
- Healthy volunteers
- Accepted
Summary
Investigation of frequency specific transcranial alternating current stimulation on cognitive control signals in frontal cortex
Detailed description
Previous evidence suggests that there are specific frequency bands associated with different aspects of cognitive control. In specific delta (2-4Hz) and beta (15-30Hz) are associated with increased levels of abstraction for learned rules; and theta (5-8Hz) and gamma (30-50Hz) has been associated with increased set-size or number of learned rules. Here we aim to find causal evidence in support of these previous correlational findings by applying cross-frequency transcranial alternating current stimulation (tACS) in the specific frequency bands previously shown to be task-relevant. In a crossover design, we stimulate subjects with either delta-beta or theta-gamma tACS during performance of a hierarchical cognitive control task that manipulates the level of abstraction and set-size of rules that must be learned in order to make the correct button press.
Conditions
Interventions
| Type | Name | Description |
|---|---|---|
| DEVICE | Theta-gamma tACS | NeuroConn technologies, direct current-stimulator plus |
| DEVICE | Delta-beta tACS | NeuroConn technologies, direct current-stimulator plus |
| DEVICE | Sham tACS | NeuroConn technologies, direct current-stimulator plus |
Timeline
- Start date
- 2018-10-07
- Primary completion
- 2019-07-25
- Completion
- 2019-07-25
- First posted
- 2019-01-10
- Last updated
- 2020-05-18
- Results posted
- 2020-05-18
Locations
1 site across 1 country: United States
Regulatory
- FDA-regulated device study
Source: ClinicalTrials.gov record NCT03800030. Inclusion in this directory is not an endorsement.