The Period 3 Shift

Why Karl Pribram and Chaos Theory Changed Neurofeedback Forever

By Valdeane W. Brown, Ph.D.
Developer of NeurOptimal® Dynamical Neurofeedback®

For decades, the neurofeedback field followed the medical model: assess thoroughly, assign a diagnostic label, and build a linear treatment protocol around that label. The practitioner assumes the burden of knowing where the brain ought to be, pushing it toward predetermined statistical norms.

When I presented our research with Jay Gunkelman and Dr. Karl Pribram of Stanford University at the SNR conference—later published in the Journal of Neurotherapy—we laid out a radically different premise. We brought nonlinear dynamical systems (chaos theory) into the clinical room and asked a fundamental question: Is the central nervous system a stationary, predictable machine, or is it a dynamic, self-organizing process?

Karl Pribram’s work in cognitive neuroscience and holonomic brain theory demonstrated that the brain processes complex information non-locally and holistically. That insight directly informed what I termed the Period 3 Approach. Rather than micro-managing isolated frequencies based on a diagnostic category, we recognized that the central nervous system renormalizes autopoietically—it self-organizes when given proper dynamical information.

To validate this, we retrospectively analyzed twenty clinical records representing widely divergent presenting problems and diagnoses. Across these varied clients, Joint Time-Frequency Analysis revealed common, problematic amplitude excursions at 3, 5, and 10 Hz.

Using bilateral active placements at C3 and C4, we investigated the effect of 40 Hz augmentations. The results were definitive: bilateral 40 Hz augmentation diminished those excursions across every client, regardless of their diagnosis or clinical label. Multiple complaints resolved concurrently.

This was the pivotal turning point. It proved that when you honor the brain as a nonlinear dynamical system, you do not need complex pre-training workups or differential diagnoses to facilitate genuine transformation. You do not steer the system; you provide the precise dynamical information it requires, stepping back so the nervous system can restore its own resilience and balance from the inside out.

Original intellectual property of Valdeane W. Brown, Ph.D. All rights reserved. Published here with permission.

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The rest of the essays sit together, and his page carries the 5-Phase Model and the work behind it.