Temporal Interference Brain Stimulation (TI)
|The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.|
|ClinicalTrials.gov Identifier: NCT03747601|
Recruitment Status : Unknown
Verified May 2020 by Beth Israel Deaconess Medical Center.
Recruitment status was: Active, not recruiting
First Posted : November 20, 2018
Last Update Posted : May 20, 2020
The primary aim of this study is to translate temporal interference (TI) stimulation methodology into humans and examine its safety, feasibility, steerability, and focality. In the proposed early phase human experiment, the ability to apply TI stimulation will be assessed along spatial dimensions to selectively modulate neural activity and assess the feasibility of selective targeting deep brain structures without exciting overlaying cortex. The overall goal of the study is to advance TI methodology and its translation to humans.
The specific aims in this study are to
- Assess the safety of TI stimulation.
- Assess the feasibility, focality, and steerability of TI stimulation by selectively modulating activity in subregions of a cortical area (calcarine cortex)
It is hypothesized that TI stimulation can be used to impact different regions of the visual field that are represented within the calcarine fissure of the human brain.
It is hypothesized that TI will be well tolerated by human subjects and side effects will be consistent with other forms of transcranial electric current stimulation (tES).
|Condition or disease||Intervention/treatment||Phase|
|Visual Acuity||Device: Temporal Interference (TI) Stimulation||Not Applicable|
|Study Type :||Interventional (Clinical Trial)|
|Estimated Enrollment :||20 participants|
|Intervention Model:||Single Group Assignment|
|Masking:||None (Open Label)|
|Primary Purpose:||Device Feasibility|
|Official Title:||The Development and Human Translation of Temporal Interference Brain Stimulation|
|Actual Study Start Date :||September 19, 2019|
|Estimated Primary Completion Date :||June 2021|
|Estimated Study Completion Date :||June 2021|
Experimental: Temporal Interference (TI) Stimulation
Temporal Interference stimulation applied to the head via standard electrodes
Device: Temporal Interference (TI) Stimulation
2-4 Temporal Interference stimulation sessions. The device is an experimental non-invasive electrical brain stimulator that functions similar to existing non-significant risk devices for electrical stimulation, including human non-invasive brain stimulation. Briefly, the device produces alternating current electrical stimulation in a kilohertz (kHz) range and results in less net charge applied within the brain. The device is powered by rechargeable 20 volt (V) battery (i.e. there is no connection to building power supply). The current is hardwired and limited to 5 milliamp (mA) via internal resistors. It includes extra safety features such as onboard fuses to limit any abrupt high current, and an emergency stop button which effectively insulates the subject and resets the device. The device was tested and characterized at all the required load conditions.
- Humphrey visual field Mean Deviation (MD) [ Time Frame: Immediately after intervention ]Change in the mean deviation (PMD) Humphrey perimetry between baseline and post-stimulation
- Change in visual discrimination threshold [ Time Frame: Immediately after intervention ]Change in detection thresholds during stimulation compared to before stimulation.
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03747601
|United States, Massachusetts|
|Beth Israel Deaconess Medical Center|
|Boston, Massachusetts, United States, 02215|