Where It Began
- In 1993, Dr. Valdeane W. Brown introduced the Five Phase Model.
- It helped shape a more adaptive and intuitive approach to neurofeedback.
At Zengar®, we believe the strength of NeurOptimal® lies in a connected global community. Since the beginning, we have been committed to building a supportive network shaped by education, service, and ongoing connection.
Who We Are
Zengar® is the company behind NeurOptimal®, a Dynamical Neurofeedback® system designed to provide real-time information through a non-invasive training process. Together, Zengar® and NeurOptimal® reflect a long-standing commitment to accessible training, education, and support.
- Rooted in decades of innovation and experience.
- Built around accessible, non-invasive brain training.
- Supported by a global community and ongoing education.
Our Story
The story of Zengar® and NeurOptimal® began with a different approach to neurofeedback. Over time, that work evolved into a global company and a system shaped by innovation, education, and long-term support.
How It Evolved
- In 1996, Val and Dr. Susan Dermit Brown founded Zengar®.
- The work continued to evolve into a more intuitive and automated system.
Where We Are Today
- In 2008, the system officially took on the NeurOptimal® name.
- Today, Zengar® supports a global community built around innovation, education, and connection.
By the Numbers
A look at the scale, reach, and support behind Zengar® and NeurOptimal®.
Supporting the NeurOptimal® community for more than 25 years.
A global presence built through education, support, and community connection.
A growing team supporting operations, service, and innovation.
Backed by Representatives, Instructors, and ongoing client support.
Meet the Team
The people behind Zengar® and NeurOptimal® have helped shape the system from its early development through its continued growth today.
Dr. Susan Dermit Brown
Co-Founder & Director
Dr. Susan Dermit Brown co-founded Zengar® in 1996 and has played a central role in the development of NeurOptimal®. Her clinical background and hands-on client work helped shape the system’s design and long-term evolution.
Dr. Valdeane W. Brown
Co-Founder & Director
Dr. Valdeane W. Brown introduced the Five Phase Model in 1993, helping lay the foundation for what would become NeurOptimal®. His work in neurofeedback and systems design helped shape the foundation behind the system.
Samantha Diavatis
CEO & COO
Samantha joined Zengar® in 2002 and helped build the operational foundation behind the company’s global community. Today, as CEO and COO, she leads day-to-day operations and long-term growth across the organization.
Alex Theoret
CEO & CFO
Alex Theoret oversees the technical, operational, and financial systems that support Zengar® today. After contributing across production, logistics, and digital infrastructure, he now serves as CEO and CFO.
Mission & Values
The work behind Zengar® and NeurOptimal® is guided by a mission and a set of values that shape how we build, support, and grow.
Mission Statement
- Create, deliver, and support brain training.
- Prioritize safety, ease of use, and long-term support.
- Make access to training more approachable and sustainable.
- Continue refining what we build in service of the people who use it.
Core Values
- Family and team through connection and shared learning.
- Support that continues over time.
- Integrity in how we build, guide, and serve.
- Growth through ongoing learning and refinement.
