Cognitive Enhancement Through Transcranial Laser Therapy (LLLT)
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ClinicalTrials.gov Identifier: NCT02851173 |
Recruitment Status : Unknown
Verified February 2019 by Andreana P. Haley, University of Texas at Austin.
Recruitment status was: Recruiting
First Posted : August 1, 2016
Last Update Posted : February 21, 2019
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Condition or disease | Intervention/treatment | Phase |
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Healthy Participants Mild Cognitive Impairment | Device: LLLT Device: Placebo | Phase 2 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 100 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Single (Participant) |
Primary Purpose: | Treatment |
Official Title: | Cognitive Enhancement Through Transcranial Laser Therapy |
Actual Study Start Date : | February 21, 2016 |
Estimated Primary Completion Date : | August 2020 |
Estimated Study Completion Date : | August 2020 |
Arm | Intervention/treatment |
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Experimental: LLLT
Six weekly sessions of LLLT. The treatment will consist of applying light of a specific wavelength (1064 nm) using a laser diode supplied by Cell Gen Therapeutics, LLC (CG-5000 laser, HD Laser Center, Dallas, TX, USA). Each laser stimulation session will consist of total 8 min, with eight 1 min/cycle treatments alternating between two locations on the right forehead.
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Device: LLLT
The treatment will consist of applying light of a specific wavelength (1064 nm) using a laser diode supplied by Cell Gen Therapeutics, LLC (CG-5000 laser, HD Laser Center, Dallas, TX, USA). |
Active Comparator: Placebo
The control group will undergo the same procedure as the treatment group, but will receive brief (5-s) stimulation to the intended site on the forehead, followed by 55 s of no stimulation, for each 1-min cycle. Thus the control group will receive approximately 1/12th of the cumulative energy density as the treatment group. This is sufficient to provide a brief sensation of slight heat (as active placebo) at the onset of each one-minute cycle, using a fraction of the energy received by the experimental group.
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Device: Placebo
The treatment will consist of applying light of a specific wavelength (1064 nm) using a laser diode supplied by Cell Gen Therapeutics, LLC (CG-5000 laser, HD Laser Center, Dallas, TX, USA). However, the placebo group will receive approximately 1/12th of the cumulative energy density as the treatment group. |
- Psychomotor vigilance task (PVT) [ Time Frame: 8 weeks ]
- BOLD response to working memory task (2 back task) [ Time Frame: 8 weeks ]
- Working memory (2 back task) [ Time Frame: 8 weeks ]

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Ages Eligible for Study: | 45 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
- Men and postmenopausal women, aged 45 and older
- Participants with Mild Cognitive Impairment
Exclusion Criteria:
- neurological disease (e.g., large vessel stroke, seizure disorder, Parkinson's disease, Alzheimer's disease, clinically significant traumatic brain injury with loss of consciousness > 30 minutes, multiple sclerosis, or brain infection/meningitis
- baseline IQ < 85 placing them below the average range of intellectual functioning
- major psychiatric illness (e.g., schizophrenia, bipolar disorder) or substance abuse (diagnosed abuse and/or previous hospitalization for substance abuse)
- severe cardiovascular disease (e.g., pacemaker), chronic obstructive pulmonary disease, liver or kidney disease, inflammatory illness

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): NCT02851173
Contact: Andreana Haley, Ph.D. | 512-232-0863 | haley@austin.utexas.edu | |
Contact: Francisco Gonzalez-Lima, Ph.D. | 512-471-5895 | gonzalezlima@utexas.edu |
United States, Texas | |
University of Texas at Austin | Recruiting |
Austin, Texas, United States, 78712 | |
Contact: Andreana Haley, Ph.D. 512-471-7926 neurolab.ut@gmail.com | |
Principal Investigator: Andreana Haley, PhD | |
Principal Investigator: Hirofumi Tanaka, PhD | |
Principal Investigator: Francisco Gonzalez-Lima, Ph.D. |
Principal Investigator: | Andreana Haley, Ph.D. | The University of Texas at Austin |
Responsible Party: | Andreana P. Haley, Associate Professor, University of Texas at Austin |
ClinicalTrials.gov Identifier: | NCT02851173 |
Other Study ID Numbers: |
2015-09-0018 |
First Posted: | August 1, 2016 Key Record Dates |
Last Update Posted: | February 21, 2019 |
Last Verified: | February 2019 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Undecided |
Cognitive Dysfunction Cognition Disorders Neurocognitive Disorders Mental Disorders |