Transcript Current Horizons in EEG Biofeedback Assessment and Training

The State of the Art in
Biofeedback and Neurofeedback:
Where do we stand?
Thomas F. Collura, Ph.D.
October 16, 2010
Michigan Society for Behavioral Medicine and Biofeedback
Annual Conference: Lansing, Michigan
Historical Perspective
EEG Biofeedback
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Operant Conditioning (Learning)
Based on brain electrical activity
Means to navigate “inner” space
Means to condition and train the brain
Wide range of application areas
EEG ranges from 0 to 100 Hz
Components include alpha, theta, beta,
etc.
Current Trends
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Assessment & Planning
Multichannel Protocols / Connectivity
Live Z-Score Training
EEG & Peripheral Biofeedback
DC and Slow Cortical Potentials
Energy Neurofeedback
Real-World Feedback
EEG circa 1925
EEG Physiology
EEG Physiology
Cells of the Cerebral Cortex
Normal Neuronal Cycle
Concentration/Relaxation Cycle
EEG Biofeedback Goals
• Improve Self-Regulation
• Achieve Flexible & Appropriate Brain
States
• Normalize Connectivity
• Address Functionality, not Symptoms
• Provide Lasting Change
Live Z-Score Training
Multichannel Assessment / Training
Advanced Protocols
Z-Plus
Z-Bars Delta Absolute Power
19 channels
Z-Bars Delta Coherence
19-channel
Live Topographic Maps
Planetary Analogy
• Targets = “sun”
• Z-Scores = “planets”
• PZOK = “how many planets are within the
defined range
• PZMO = “what is the tendency to move
inward” (gravity)
• PZME = “how far are they on average
(size of solar system)
• GOAL: A compact (normal) solar system
Sun and Planets
EEG & Peripheral Training
DC / Slow Cortical Potentials
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Very slow (< 1.0 Hz) signals
Reflect Brain Activation
Glial Cells (10x more than neurons)
Research in Europe, Germany
Clinical, BCI applications
Relatively new in USA
Historically very costly
F3 F4 P3 P4 DC/SCP
Energy Neurofeedback
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Low, Medium, High levels
Emphasis on Assessment & Planning
Feedback generally brief
Facilitates change
Nonvolitional mechanisms
Exact mechanisms may be unknown
Real-World Feedback
Future Horizons
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More General Acceptance of EEG BF
Clinical Outcome Studies
Improved Assessment & Training Methods
Safe, non-drug approach
Employs innate ability of brain to selfregulate
• Migration to home, school, office