thy report qeeg

7/24/2019 Thy Report QEEG

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BRAINWAVESWhat kind of activity?

When an area of your brain is active, it produces electricity. Wherever theres electrical activity,

theres an electromagnetic field. The electrodes detect this electromagnetic field activity, known

as brain waves. Brain waves are active all the time in ever changing proportions. The brainwave

spectrum reflects your state of arousal, or the tone of the nervous system. Though operating in

a continuous spectrum, brainwaves are divided into bandwidths to describe their function.

Delta (14Hz) Sleep, repair, instinct, deep unconscious.

Theta (4-8Hz) Creativity, insight, dream states.

Alpha (8-12Hz) Alertness, peacefulness, readiness, meditation.

SMR (12-15Hz) Mental alertness, physical relaxation.

Beta (12-21Hz) Thinking, focusing, sustained attention.High Beta (20-32Hz) Intensity, hyper alertness, anxiety.

Gamma (38-42Hz) Cognitive processing, integration, learning.

BRAIN AREASWhere is the activity happening?

Left Hemisphere Logical sequencing, detail oriented, language ability, word retrieval,

fluency, reading, maths, science, problem solving, verbal memory.

Right Hemisphere

Episodic memory, social awareness, eye contact, music, humor, empathy,spatial awareness, art, insight, intuition, non-verbal memory, whole-picture thinking

Frontal LobesImmediate and sustained attention, motivation & initiative, judgement, time

management, working memory, character, cooperation. Left:Working memory, concentration,

executive planning, positive emotions, emotional regulation. Right: Episodic memory, social

awareness, empathy. Considerations: Depression, anxiety, fear, poor executive functioning,

obsessions, compulsions, worry, ADHD, OCD.

Parietal LobesLeft:Maths, problem solving, complex grammar, attention, association. Right:

spatial awareness, geometry. Considerations: Dyscalculia, sense of direction, learning disorders.

Temporal Lobes

Left: Word recognition, reading, language, memory. Right: Objectrecognition, music, social cues, facial recognition. Considerations: Anger, rage, freeze reactions,

dyslexia, long-term memory.

Occipital LobesLocating and identifying objects in environment, colour recognition, visual

field, visual learning, reading. Considerations: Learning disorders, visual acuity.

Sensorimotor CortexConscious control of all skeletal muscle movements, spatial

discrimination, identification and localisation of bodily sensations. Left: Attention, mental

processing. Right: Calmness, emotion, empathy. Considerations: Paralysis, seizures, poor

handwriting, ADHD symptoms.


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REPORT FACTORS:

Absolute Power - How much brain power is available?

Absolute power measurement aids in determining whether enough brain power within a

particular frequency is present at each recording site.

Relative Power - Who is in charge?

The relative power measurement aids in determining whether a particular frequency is

overpowering other vital brain frequencies.

Amplitude AsymmetryThe brains balancing act.

Asymmetry scores reveal whether the brain waves between the various parts of the brain are

balanced. Excessive activity may indicate an over-firing of brain cells. Insufficient activity may

suggest brain cells are not firing sufficiently to maintain proper function. Both will lead to braininefficiency.

CoherenceHow efficiently is my brain communicating with itself?In order to integrate sensory information and to make and execute decisions, the different parts

of the brain must share information. Coherence is one of the measurements on how well the

brain is able to perform the inner self-talk. This measure gives us an indication of how efficientlythe brain is working to connect and disconnect different parts to accomplish a particular task.

Excessive coherence indicates areas that are overly connected or locked together, meaning the

brain has become overly dependent on those centres and is not efficiently processing or

executing information. This tends to result in poor performance. Deficient coherence is the EEG

sign of a brain not able to efficiently connect cortical areas to perform specific tasks.

Phase LagIs the brain moving at optimal speed?Many of the brains functions are timed events, the signals from one part of the brain arriving at

another area at just the right moment to perform a specific task. Excessive phase statistics mean

the signals arrive too early; deficient, too late. In either case, the brain loses efficiency.


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Quantitative EEG Analyses

EEG and Absolute Power Z scoreseyes open condition

EEG and Absolute Power Z scoreseyes closed condition


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COLOUR CODE FOR STANDARD DEVIATION

The coloured brain maps are based on standard deviations above and below the norm. One

standard deviation (SD) above the norm is yellow, two is orange, and three is red. Zero is the

mean, and is coloured white. One SD below the norm is light blue, two SD below is darker blue,

and three SD below is darkest blue.

The Amplitude Asymmetry, Coherence, and Phase Lag in Delta, Theta, Alpha, Beta, and High

Beta between specific brain areas measured are displayed as maps. The small dots on the mapsrepresent the areas where the electrodes gathered the data. The thin blue line represents one SD

below the norm and gets thickest up to three SD below the norm. The thin red line represents one

SD over norm, and the thickest at three SD above the norm. No lines indicate activity within

normal range.

Eyes open


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LORETA Deep Brain Source Correlation:

Linking a patients symptoms and complaints to functional systems in the brain is important inevaluating the health and efficiency of cognitive and perceptual functions. The electrical rhythms

in the EEG arise from many sources but approximately 50% of the power arises directly beneath

each recording electrode. Electrical NeuroImaging uses a mathematical method called anInverse Solution to accurately estimate the sources of the scalp EEG (Pascual-Marqui et al,

1994; Pascual-Marqui, 1999). Below is a Brodmann map of anatomical brain regions that lie

near to each 10/20 scalp electrode with associated functions as evidenced by fMRI, EEG/MEGand PET NeuroImaging methods.


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1 Hz Z-Score analysis(Red = overactive / Blue = underactive)



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10 Hz Z-Score analysis(Red = overactive / Blue = underactive).


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15 Hz Z-Score analysis(Red = overactive / Blue = underactive).



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