Passive EEG-Guided Neuromodulation in Chronic Migraine: Executive Summary

April 3, 2026

Study Overview

This prospective feasibility study evaluated the Neurogen Brain Balancing Migraine Protocol (NGBBMP), a passive, EEG-guided neuromodulation approach for chronic migraine treatment. Twenty adults (19 female, 1 male; mean age 40.5 years) with an average 14-year migraine history completed five standardized 30-minute sessions over four weeks, delivered by Certified Neurogen Practitioners across multiple U.S. locations and Amsterdam.

Clinical Rationale

Chronic migraine affects approximately 39 million Americans and ranks as the second most disabling condition globally among all ages. Despite widespread pharmacological treatments, up to 40% of patients discontinue preventive medications due to inefficacy or intolerable side effects, with many experiencing only 30-50% reduction in monthly headache days. Traditional neurofeedback, while promising, requires 30-40 sessions over 3-5 months with highly variable outcomes—a burden particularly challenging for migraine sufferers experiencing cognitive fog, sensory sensitivities, and pain.



NGBBMP represents a fundamentally different approach: it is entirely passive, requiring no cognitive effort or behavioral engagement. Using ultra-low-intensity pulsed transcranial electrical signaling (LIP-tES) guided by real-time EEG monitoring, the system detects dysregulated brainwave patterns and applies corrective microcurrents below perceptual thresholds to interrupt maladaptive electrical activity and promote neuroplastic reorganization.


Brain activity visualization

Mechanism of Action

The intervention targets migraine's core neurobiological disturbances:



  • Cortical Hyperexcitability: Reduces excessive neuronal firing in sensory cortices
  • Thalamocortical Dysrhythmia: Restores rhythmic communication between thalamus and cortex
  • Central Sensitization: Interrupts amplified pain processing pathways
  • Neuroinflammation: Attenuates inflammatory signaling
  • Autonomic Imbalance: Promotes parasympathetic dominance
  • Network Homeostasis: Reorganizes whole-brain connectivity


Participant Profile

The cohort represented a treatment-experienced, chronically ill population:

  • 75% suffered migraines ≥10 years (range: 1-55 years)
  • Mean baseline: ~13 migraine days/month
  • Average pain intensity: 7.85/10 (65% in severe range)
  • 90% used prescription medications and complementary therapies
  • Common triggers: stress/anxiety (95%), bright lights (80%), hormonal changes (75%)
  • Prevalent symptoms: throbbing pain, photophobia, phonophobia, difficulty concentrating


Primary Outcomes

Results demonstrated rapid, multidimensional improvements with large effect sizes:

MIDAS (Migraine Disability Assessment):

  • Scores declined from 77.7 (Severe Disability) to 16.5 (Moderate Disability)
  • Represents 79% reduction in migraine-related disability

HIT-6 (Headache Impact Test):

  • Scores decreased from 67.15 ("Very Severe Impact") to 53.95 ("Some Impact")
  • Categorical shift in functional impact

Quality of Life:

  • 49% overall improvement across five domains
  • Sleep: 57% improvement (3.5 → 2.15)
  • Work/School: 42% improvement (3.45 → 2.0)
  • Relationships: 48% improvement (3.35 → 1.75)
  • Recreation: 49% improvement (3.85 → 2.0)
  • Mood: 47% improvement (4.05 → 2.15)

Treatment Goals:

  • 56% of all participant-defined goals rated as "mostly" or "completely" achieved
  • Mean overall effectiveness rating: 6.7/10
  • 60% rated effectiveness ≥7/10

90-Day Follow-Up Findings

Nine participants (45% response rate) completed voluntary follow-up assessments revealing sustained benefits

  • 89% reported less frequent migraines versus baseline
  • 78% reported reduced intensity and painfulness
  • 78% experienced only 0-2 migraine days in final three weeks
  • Pain severity remained in mild-to-moderate range (1-6/10)
  • No respondents reported severe pain (7-10/10)
  • 89% satisfied or very satisfied with treatment
  • No moderate or severe delayed adverse events

Safety Profile

NGBBMP demonstrated excellent tolerability:

  • No serious adverse events across all 100 sessions
  • Minimal side effects (occasional mild, transient headache)
  • Signals delivered at ~2.5 picowatts (1/10,000th power of AA battery)
  • Non-invasive, passive, drug-free intervention
  • No contraindications with existing medications

Clinical Significance

The findings are particularly noteworthy given the treatment-resistant nature of the cohort and the brevity of intervention. Unlike preventive medications requiring weeks to months for effect, many participants reported benefits after the first session, with substantial improvements within four weeks. The passive nature eliminates barriers associated with cognitive demand, making it accessible for individuals unable to engage in traditional neurofeedback.



Qualitative reports reinforced quantitative findings, with participants describing longest migraine-free periods in years, improved sleep architecture, enhanced emotional regulation, reduced trigger sensitivity, and decreased medication reliance.


Study Limitations

As an uncontrolled feasibility study, limitations include: small sample size (n=20), absence of randomization or sham condition, reliance on self-report measures, brief intervention window, and limited follow-up response rate (45%). Future randomized, double-blind, placebo-controlled trials incorporating objective biomarkers (qEEG, fMRI, HRV) and extended follow-up are essential to establish causality and durability.

Broader Implications


This study provides proof-of-concept evidence supporting NGBBMP as a rapid, safe, well-tolerated intervention producing meaningful reductions in migraine burden. The mechanisms align with migraine pathophysiology involving network dysregulation, suggesting potential applications beyond migraine to chronic pain syndromes, PTSD, post-concussion syndrome, sleep disorders, and cognitive dysfunction—conditions sharing overlapping neural network disturbances.


With an estimated 30,000 sessions delivered since 2020 without notable adverse effects, and preliminary VA-funded research underway examining neurophysiological changes via resting-state MRI, the platform represents a promising addition to the neurotherapeutic armamentarium—particularly for individuals seeking non-pharmacologic, accessible, and patient-centered care alternatives.


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After a distinguished 30-year career as a Special Ops Marine, Greg Gillespie returned home with three Purple Hearts and severe combat injuries, including traumatic brain injury (TBI) and post-traumatic stress disorder (PTSD). Like many veterans, he found himself stuck in what he calls the "hamster wheel" of the VA medical system, heavily medicated by a wheelbarrow full of psychotropic drugs but finding no real relief from his debilitating migraines, chronic pain, and depression.  Everything changed when Greg volunteered to be the very first test subject for a new, experimental brain-balancing technology. In a single 13-minute, completely non-invasive session, Greg experienced a miraculous shift: his migraine vanished "like flicking a light switch," and by the next morning, his double vision and chronic pain were almost entirely gone . He also slept completely through the night without nightmares for the first time in seven years. That life-altering moment transformed Greg from "patient number one" into a dedicated practitioner who has since treated over 8,000 people, eventually leading him to his current role as CEO. In the featured video below, originally recorded for the Care at Scale podcast with host Greg Reiners, Greg Gillespie shares his incredible full story. He breaks down exactly how Neurogen's passive neuromodulation works to gently suggest balance to the brain's electrical frequencies, allowing the brain to repair itself without requiring the patient to actively focus or participate . Greg also shares astounding stories of patient recoveries—ranging from stroke victims to paralyzed individuals—and discusses his ongoing mission through BBforVets.org to provide complementary treatments to veterans. Watch the full video below to discover how Neurogen is helping people reclaim their quality of life.
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