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Research library

What trainers have seen across many reasons people train.

A 2008 survey of NeurOptimal® trainers about results they reported after 20 or more sessions.

Adults singing together during a community choir rehearsal

87.9%

Stress

Relaxation and everyday stress

83.3%

Sleep

Rest and sleep quality

83.7%

Focus

Focus and attention

83.7%

Mood

Mood and emotional ease

81.3%

Social ease

Ease with other people

78.3%

Peak performance

Peak performance

Each figure is the share of trainers who reported at least 40% improvement for that reason after 20 or more sessions. These are trainer-reported findings based on client self-report and presentation. The publisher states outcomes were not independently verified. This page is for general education and is not personal medical advice.

Zengar Institute. (2009). Survey report on the use of Zengar NeurOptimal™. Independently supervised by Charlene Zietsma, Ph.D., University of Victoria.

Open the survey PDF

Other NeurOptimal® studies

Peer-reviewed papers and clinic reports that used NeurOptimal® with people who also reported these experiences. They are listed for education. NeurOptimal® is not offered here as treatment for any condition. Each entry links to the paper or journal page.

  1. Mood, ease, and academic confidence in college students

    A small preliminary study of 16 NeurOptimal® sessions with college students who also reported ADHD. Authors described changes in mood, ease, and academic confidence. NeurOptimal® is not offered here as treatment for ADHD, depression, or anxiety.

    Harris, S., Hundley, G., & Lambie, G. (2021). The Effects of Neurofeedback on Depression, Anxiety, and Academic Self-Efficacy.

    Open PDF

  2. Thinking, fatigue, and rest after cancer treatment

    A study of 20 NeurOptimal® sessions with breast cancer survivors after chemotherapy who also reported changes in thinking, fatigue, mood, and sleep. NeurOptimal® is not offered here as cancer treatment or as treatment for chemo-related impairment.

    Alvarez, J. A., et al. (2013). The Effect of EEG Biofeedback on Reducing Postcancer Cognitive Impairment.

    Open PDF

  3. Sound perception and everyday ease

    A multicenter NeurOptimal® study in people who also reported tinnitus. Authors described questionnaire changes around worry, mood, and stress, and asked for a larger sample. NeurOptimal® is not offered here as treatment for tinnitus.

    Manna, C. B., et al. (2023). Dynamical Neurofeedback® NeurOptimal®: A New Approach to Improve the Perception of Tinnitus.

    Open PDF

  4. Attention and self-concept in college students

    A study of 16 NeurOptimal® sessions with college students who also reported ADHD. Authors described changes in attention, activity, and self-concept. NeurOptimal® is not offered here as treatment for ADHD.

    Weaver, L., et al. (2018). The Effects of Neurofeedback Training on College Students' ADHD Symptoms.

    Open article

  5. Mood and ease scores after eight sessions

    Clinic data from adults in NeurOptimal® training. Average mood and ease inventory scores were different at session 8 than at session 0. NeurOptimal® is not offered here as treatment for depression or anxiety.

    Beckett, L., & McCulloch, J. (2014). Effects of NeurOptimal Neurofeedback on Symptoms of Depression and Anxiety. Kingston Institute of Psychotherapy & Neurofeedback.

    Clinic presentation of Beck inventory scores at session 0 and session 8. Not a peer-reviewed trial.

    Open PDF

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