About Us


Our Philosophy

We have a passion for creating optimal minds. Seeing our clients change and grow into their best selves is extremely rewarding.

Creating your optimal mind is a co-collaborative work of art. Why choose us?

We listen to our clients like no one else

  • You’ll be involved every step of the way as we continually adjust protocols based on your individual response.

We have the training

  • It’s not just the neurofeedback technology; there are many philosophies of training and choices of protocols.
  • We have trained with the top leaders in the field and chosen what works best for optimal brain performance of the many philosophies and training modalities out there.

We have the experience

  • We have conducted tens of thousands of training sessions for executives, athletes, students, military personnel and other people of all ages to sharpen mental acuity, mental stamina, comprehension and aid in the ability to learn, remember, and be resilient to stress.
  • We’ve worked with people from many of the nation’s top organizations such as the DOD, NASA, the U.S. Army, the White House as well as numerous universities and major corporations. Clients enjoy working with us and often refer us to colleagues, friends, and family.
  • We’ve been creating optimal minds for over eleven years. Our experience means we know how and when to adjust protocols to help you reach your goals in the most efficient and comfortable way.
  • Several of our neurofeedback specialists are former clients who changed career direction to be in this field. They know what it’s like to be the trainee.


  • We do not use “canned programs.” Each training program is created uniquely for that individual.

Flexible training programs and locations

  • Training is painless, drug-free and conducted in a professional office setting or anywhere in the world online.

Safety and efficacy

  • We use a technology that has been proven world-wide over 4 decades.
  • Use of objective and evidence based protocol decision making

Our Team

Our neurofitness specialists are highly skilled, qualified and experienced in the field of neurofeedback. Their expertise, plus our knowledge base of knowing how to train specific brain map patterns based on our eleven years of experience running thousands of sessions ensures the accuracy and success of your training.

Cynde Margritz
CEO & Founder, Peak Neurofitness

Master of Science in Biology from Penn State University
Mid-Atlantic Society for Biofeedback and Behavioral Medicine
Member of the International Society for Neurofeedback and Research (ISNR)
Member of the Association for Applied Psychophysiology and Biofeedback (AAPB)

Cynde is a former NASA scientist and founder of Peak Neurofitness. Motivated by her own lifelong interest on how to enhance brain performance after a childhood concussion impaired her ability to perform at her peak, Cynde dedicated years researching the best of brain-based technologies.

Drawing upon 30 years of research by NASA and other scientists who studied brain performance as well her own personal experience, the result of her work is the highly specialized Peak Neurofitness Program. At Peak Neurofitness, Cynde acts as the current CEO and contributes her expertise in innovating and evaluating new peak performance protocols.

Her extensive study, including the education and training required for certification by the Biofeedback Certification International Alliance (BCIA) also includes studying with many of the pioneers and key players in the field of neurofeedback.:

  • Sue and Sigfried Othmer (of the EEG Institute)
  • Vietta Wilson, PhD. renowned sports psychologist and creator of the Mind Room for 2006 World Cup champion Italian soccer team
  • Les Fehmi, of the Princeton Biofeedback Institute and creator of the Open Focus method
  • Rae Tattenbaum of Inner Act for optimal performance including musical and theatrical
  • Jonathan Walker of the Neurotherapy Center of Dallas and one of the few neurologists practicing neurofeedback
  • Jay Gunkelman of Brain Science International, one of the top electroencephalographs in the country
  • Richard Souter, Ph.D. of the New Mind Center and pioneer of two-channel training
  • Bill Scott, originator of Brain Paint and pioneer in the use of neurofeedback for addictions
  • John Demos, of EEG Vermont, author of Introduction to Neurofeedback
  • The Thompsons of the ADD Centre in Toronto

Cynde also participates in clinician forums for the latest technology and best practices including weekly live, collaborative case reviews. She is a member of the International Society for Neurofeedback and Research (ISNR) and the Association for Applied Psychophysiology and Biofeedback (AAPB). Cynde enjoys her dogs’ antics as well as cooking, baking, wine, chocolate, traveling, photography, hiking, and gardening.


Linda Walker

Member of the International Society for Neurofeedback and Research (ISNR)
Member of the Association for Applied Psychophysiology and Biofeedback (AAPB)
Master’s degree in Human Relations and Counseling

Linda has over 15 years of experience specializing in neurofeedback for mood and mental health issues, chronic pain, cognitive functioning and optimal performance. At Peak Neurofitness, she provides a mental health perspective on peak performance and analyzes complex maps.


Jay Gunkelman
QEEG Diplomate

Former President of The International Society for Neurofeedback and Research
Former President of the Biofeedback Society of California
Board member & Treasurer of the Association for Applied Psychophysiology and Biofeedback

Jay Gunkelman, QEEG Diplomate, is recognized as one of the top leaders in the field of EEG and QEEG, and has processed over 500,000 EEGs since 1972.

He was the first EEG technologist to be certified in QEEG (1996) and was granted Diplomate status in 2002. He has conducted, published or participated in hundreds of research papers, articles, books and meetings internationally.

He continues to lecture on EEG/QEEG at neuroscience meetings worldwide. He has co-authored the textbook on EEG artifacting (2001). Jay remains busy with current projects and publications related to his seminal paper on EEG endophenotypes (2005, Clinical Electroencephalography).

At Peak Neurofitness, Jay contributes his pioneering expertise in map analysis and phenotype (patterns associated with different symptoms) identification.


Cabell Williams
Lead Neurofeedback Specialist Virtual Program

Cabell graduated from George Mason University with her Bachelor of Science in Neuroscience and a minor Psychology. She is currently pursuing her Master’s degree in Clinical Research at the University of Virginia. She will graduate in May of 2018.

Cabell is an expert in brain mapping, map analysis and protocol planning, neurofeedback, heart rate variability biofeedback, skin conductance biofeedback, and mirror therapy. If you are a client of our Virtual Program, she is the expert who will conduct your initial brain map and assessment session; a process that can take 2-3 hours of dedicated analysis.

When not working at Peak Neurofitness, Cabell is conducting research on the biomarkers for social engagement in infants using EEG and fMRI technology at the University of Virginia.

Cabell has also worked at George Mason’s Youth Emotion Lab, where she studied the effects of stress on parent-teen interactions and how it can lead to delinquency, substance abuse, and educational issues later in the teen’s life. Her work there entailed administering Heart Rate Variability Tests, collecting cortisol samples, genetics testing, and drug testing. She also administered psychiatric diagnostic testing, stress tests, and risk assessments for suicide, self-harm, and child abuse.

Cabell currently lives in Charlottesville, Virginia with her loving dog, Moon. She enjoys mindfulness practices, backpacking, cooking, working out, and socializing.


Heather Hill
Lead Neurofeedback Specialist, Arlington Center

Bachelor of Science in Forensic Chemistry (minor in chemistry & psychology), University of New Haven

Heather is an expert in map analysis and protocol planning, neurofeedback, heart rate variability biofeedback, and skin conductance biofeedback. She is the lead neurofeedback specialist at our Arlington Clinic, running sessions there as well as with our Virtual Program. Heather first came to Peak Neurofitness as a client and, after great success, decided to contribute her expertise to the team! Outside of work, she enjoys live music, dancing, yoga and reading on the beach. She integrates mindfulness into her everyday activities to cultivate a calm, positive lifestyle and meditates regularly to promote a healthy mind-body-spirit connection.


Andy Rohr
Lead Neurofeedback Specialist, Burke Center Office Manager

Andy first experienced neurofeedback as a client. A technical person by nature, when he saw how effective it was personally, he decided to learn more about it. He subsequently completed the neurofeedback certification training by the Peak Neurofitness staff and joined our team as a neurofeedback specialist and office manager. Studying neurofeedback has become a passion and he is currently engaged in developing advanced expertise in the field of neurofeedback. One of his goals is to find ways to bring neurofeedback training to segments of the population who could benefit from it, but currently cannot afford it. For the past 30 years, he has worked for two companies, doing general bookkeeping and office management.

Andy is married, living in the Capitol Hill neighborhood of Washington, DC, and his personal life focuses on his cats and dogs as well as his love for the Washington Nationals baseball team and DC’s other sports franchises. Additionally, he paints and is a lover of music.


Hours & Location

Schedule an appointment today and discover your optimal brain and life!

703.824.8733  •  888.815.5829

TIME Tue-Fri 9am – 8pm, Sat 9pm – 3pm

• Arlington VA • Burke VA • Global virtual training

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