qEEG AND Neurofeedback in mTBI -European Neuro Convention 2017
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Transcript of qEEG AND Neurofeedback in mTBI -European Neuro Convention 2017
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qEEG and Neurofeedbackin Mild Traumatic Brain Injury
Derek Jones PhD MBA Anatomical Concepts (UK) LtdFixxl Ltd
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Can we distinguish brain injured from ‘normals’ based on their qEEG?
Can we use neurofeedback to improve
function?
mTBI
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… Not Just About Sport …•Initial damage may seem minimal .. but …
•Chronic effects in the longer term
•Significant cognitive, sensory and psychiatric dysfunction
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EEGBioelectric potential
recorded at the surface of the head using electrodes
and instrumentation.
Arising from the brain cells in the cerebral cortex
epiphenomenon
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EEG Signal Acquisition
•80 year + Experience •Good hardware •Care needs to be taken
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qEEG =
Quantitative Electroencephalography
•Frequency domain representation •Normative databases •Coherence
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Data Acquisition
• Microvolt level signals • Sensitive to error & protocols • Standardised electrode positions
https://www.biofeedback-tech.com
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moment-to-moment brain function is directly linked to
EEG oscillations.
Trauma should be reflected in the EEG pattern but needs to be quantified - you can’t do this
subjectively
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Frequency SpectrumRepresenting the EEG
as consisting of several “classical” frequency bands
Delta - 0 to 4 Hz Theta - 4 to 7 Hz Alpha - 8 to 13 Hz Beta1 - 15 to 21 Hz Beta2 - 21 to 30 Hz Gamma - 30 to 100 Hz
SMR 12-15 Hz
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Frequency Domain
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Classify..Group A
Group CGroup B
“mTBI”
“normal”
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Coherence
• Coherence (correlation) between regions tends to be high due to high level of connectedness
• Connectivity reflects the amount of processing that the brain is devoting to particular activities
• Could look at magnitude and phase of FFT
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Human ConnectomeMapping Structure and Function
A wiring diagram of the brain
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Normative Database
individual
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Identify mTBIKirtley Thornton “A QEEG activation methodology that obtained 100% accuracy in the discrimination of traumatic brain injured from normal and does the learning disabled show the brain injury pattern?”.Neuroregulation, Vol. 1(3-4):209-218, 2014
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10-20
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Neurofeedback• Signals from the brain are “revealed” to the trainee
• Brain processes new information and learns
• Allows conditioning and signage to occur
• System needs to be intuitive and relatively simple
• There is engagement - but not “trying”
• EEG changes may occur but what matters is clinical outcomes
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Conceptual view of Neurofeedback
EEG
Brain Events
Behaviour
Thought
Externalised
Internalised
Perceived as ThoughtsPerceived as Behaviour
Perceived as Neurofeedback
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Derek Jones PhD MBA Anatomical Concepts (UK) LtdFixxl Ltd