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Active, not recruitingNCT04566900Updated Jul 10, 2026

Neurofeedback to Improve Working Memory in Mild Cognitive Impairment

An interventional study of Neurofeedback and Placebo in Mild Cognitive Impairment, sponsored by University of California, San Diego. Active, not recruiting at 1 site in United States. Open to participants aged 50 Years to 85 Years. Per ClinicalTrials.gov, last updated 2026-07-10.

Sponsored by University of California, San Diego · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Jun 2026, 3 months ago, but the record still lists the study as active, not recruiting.
Phase
Not applicable
Study type
Interventional
Enrollment
112
Allocation
Randomized
Ages
50 Years to 85 Years
Sex
All
01

Study summary

Mild cognitive impairment (MCI) has been identified as an early phase of Alzheimer's disease (AD), a neurodegenerative disorder expected to affect 13.9 million Americans by 2060. AD causes a progressive cognitive decline, including problems related to learning and memory, that adversely affects life quality. Treatment intervention at the MCI stage of the disease could potentially slow down the rate at which people may convert from MCI to AD. Increasing evidence suggests that abnormal activity in frontal regions of the brain is associated with cognitive deficits observed in AD. Furthermore, previous research has shown that neurofeedback (NFB) training targeting these regions can improve memory, making it a potential treatment for AD. NFB is a technique where an individual learns to change his/her brain function in a particular direction, once that function has been made accessible through a visual or auditory metaphor. We are proposing a novel, computer-based brain-training program to enhance frontal gamma oscillatory activity in individuals with MCI. Results from this study will build the scientific foundation necessary for larger clinical trials dedicated to improving treatment options and outcomes for patients with MCI.

Read the detailed description

This is a randomized, double-blind, clinical trial to test the efficacy of gamma-neurofeedback (G-NFB) compared to a placebo (P-NFB) in individuals with MCI. 112 consented participants will be randomized to receive G-NFB (n=56) or placebo-NFB (n=56) during 30-45 minute sessions twice per week for 12 weeks (24 total sessions). Memory and other cognitive domains will be measured using paper and pencil and computerized tests every 4 weeks during the study and at 4 weeks post completion of study.

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Conditions studied

  • Mild Cognitive Impairment

Keywords

  • neurofeedback
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In context

Cognitive Dysfunction

3,843 studies on the registry are indexed under Cognitive Dysfunction; 1,099 are open to participants now.

This study's planned enrollment of 112 is above the median of 65 across 2,807 interventional studies indexed under Cognitive Dysfunction.

Browse Cognitive Dysfunction studies →

Lead sponsor

University of California, San Diego is the lead sponsor of 958 studies on the registry; 191 are open to participants now.

Of its 110 completed or terminated interventional studies of FDA-regulated products, 70 (64%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
50 Years to 85 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. Meet criteria for mild cognitive impairment (MCI).
  2. Living independently.
  3. Literate in English.
  4. Competent to participate in the informed consent process and provide voluntary informed consent.

Exclusion criteria

Exclusion Criteria:

  1. Frontal temporal dementia
  2. Active alcohol or substance use disorder within the past year.
  3. Brain cancer
  4. Stroke within the last 2 years
  5. Anti-epileptic medication
  6. Prior head injury involving loss of consciousness
  7. Seizure disorder
  8. Use of medications likely to affect cognitive function (cf. donepezil, memantine). We will not exclude for other medications but will examine their effects and include medications as covariates as appropriate (e.g., presence v. absence; anticholinergic load).
  9. The potential benefits of the study do not outweigh the potential risks of the study, as determined by the PI.
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Outcomes assessor)
Enrollment
112 participants (estimated)

Study arms

  • Experimental
    Active Treatment

    Subjects will be given a choice of videos consisting of still images set to music. Whether the video progresses and music continues to play will depend on the subject's ability to maintain frontal gamma oscillatory activity within a prespecified range. Over successive weeks, the parameters for positive feedback (music and video progression) will become incrementally more difficult.

    Behavioral: Neurofeedback

  • Sham comparator
    Placebo

    Video and music progression will be random and will not depend on brain activity. Any progression will be by random chance alone.

    Other: Placebo

Interventions

  • BehavioralNeurofeedback

    Neurofeedback is a technique where brain functions are made accessible to the subject in the form of a metaphor. For instance, frontal brain activity may be shown as an airplane flying. Once the activity is made accessible, the subject can modulate it in a pre-specified direction. The parameters used to achieve successful feedback are made difficult over time and hence the brain is taught or conditioned to improve performance.

  • OtherPlacebo

    Subjects in this arm will undergo all of the same testing as active treatment. Music and video progression will not depend on brain activity. Instead feedback will be random.

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What researchers measure

Primary outcomes

  1. Change in Working Memory accuracy

    Change in the computerized test, N-back will be used to measure working memory.

    Time frame: From baseline to 12 weeks of treatment

Secondary outcomes

  1. Durability of Change in Working Memory accuracy

    Change in the computerized test, N-back will be used to measure working memory.

    Time frame: From baseline to 4weeks post end of study

  2. Change in Gamma Band Response

    Change in Gamma oscillations will be measured while the subject performs the n-back task.

    Time frame: From baseline to 12 weeks of treatment

  3. Durability of Gamma Band Response

    Change in Gamma oscillations will be measured while the subject performs the n-back task.

    Time frame: From baseline to 4weeks post end of study

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Study locations

1 site
  • University of California at San Diego
    La Jolla, California 92093, United States
08

References and documents

Publications

  • Diamond A. Executive functions. Annu Rev Psychol. 2013;64:135-68. doi: 10.1146/annurev-psych-113011-143750. Epub 2012 Sep 27. PubMed 23020641 ↗
  • Dohnel K, Sommer M, Ibach B, Rothmayr C, Meinhardt J, Hajak G. Neural correlates of emotional working memory in patients with mild cognitive impairment. Neuropsychologia. 2008 Jan 15;46(1):37-48. doi: 10.1016/j.neuropsychologia.2007.08.012. Epub 2007 Aug 23. PubMed 17915264 ↗
  • Leuchter AF, Newton TF, Cook IA, Walter DO, Rosenberg-Thompson S, Lachenbruch PA. Changes in brain functional connectivity in Alzheimer-type and multi-infarct dementia. Brain. 1992 Oct;115 ( Pt 5):1543-61. doi: 10.1093/brain/115.5.1543. PubMed 1422803 ↗
  • Uhlhaas PJ, Singer W. Neural synchrony in brain disorders: relevance for cognitive dysfunctions and pathophysiology. Neuron. 2006 Oct 5;52(1):155-68. doi: 10.1016/j.neuron.2006.09.020. PubMed 17015233 ↗
  • Stam CJ, van Cappellen van Walsum AM, Pijnenburg YA, Berendse HW, de Munck JC, Scheltens P, van Dijk BW. Generalized synchronization of MEG recordings in Alzheimer's Disease: evidence for involvement of the gamma band. J Clin Neurophysiol. 2002 Dec;19(6):562-74. doi: 10.1097/00004691-200212000-00010. PubMed 12488788 ↗

Study documents

  • Informed consent form · Oct 2, 2024

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 10, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04566900
Lead sponsor
University of California, San Diego
Responsible party
Fiza Singh (Associate Professor of Psychiatry, University of California, San Diego) — Principal investigator
First posted
Sep 28, 2020
Start date
Jan 1, 2021
Primary completion
Jun 30, 2026 (estimated)
Completion
Aug 31, 2026 (estimated)
Last update
Jul 10, 2026

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in May 2026. You cannot join it, but the record below documents what was studied.

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