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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
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Historical Perspective
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EEG Biofeedback 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.
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Current Trends Assessment & Planning Multichannel Protocols / Connectivity Live Z-Score Training EEG & Peripheral Biofeedback DC and Slow Cortical Potentials Energy Neurofeedback Real-World Feedback
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EEG circa 1925
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EEG Physiology
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Cells of the Cerebral Cortex
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Normal Neuronal Cycle
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Concentration/Relaxation Cycle
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EEG Biofeedback Goals Improve Self-Regulation Achieve Flexible & Appropriate Brain States Normalize Connectivity Address Functionality, not Symptoms Provide Lasting Change
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Live Z-Score Training
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Multichannel Assessment / Training
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Advanced Protocols
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Z-Plus
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Z-Bars Delta Absolute Power 19 channels
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Z-Bars Delta Coherence 19-channel
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Live Topographic Maps
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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
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Sun and Planets
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EEG & Peripheral Training
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DC / Slow Cortical Potentials 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
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F3 F4 P3 P4 DC/SCP
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Energy Neurofeedback Low, Medium, High levels Emphasis on Assessment & Planning Feedback generally brief Facilitates change Nonvolitional mechanisms Exact mechanisms may be unknown
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Real-World Feedback
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Future Horizons More General Acceptance of EEG BF Clinical Outcome Studies Improved Assessment & Training Methods Safe, non-drug approach Employs innate ability of brain to self- regulate Migration to home, school, office
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