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qeeg Neuroshow
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- 12. Phase measures thespeed of electrical signals moving across the brain's surface. Phase answer the question: “Is the brain's energy moving at the optimal speed for adequate to superior performance?
- 13. Topographic Brain mapsanswer the questions: “Are brain frequencies and patterns appropriate for the task?” “Are the proper brain areas engaging to yield maximum performance?”
- 14. LORETA Z Scoresprovide 3 dimensional perspectives of brainwave activity from deep within the brain.
- 15. Tramatic Brain Injuryand Severity Analysis
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- 17. Spectrum Brain WaveAnalysis examines various frequencies and regions over time and answers the question, “Does this brain switch to a new task in an appropriate, easy and efficient way?”
- 18. Excessive slow waveswith relatively deficient fast frequencies reduce our ability to focus and pay attention.
- 19. Excessive fast frequenciescombined with relatively deficient Alpha and Theta waves may increase feelings of anxiety.
- 20. Unequal brain waveenergy between the two sides of the brain may restrict our ability to think clearly and may be associated with feelings of depression.
- 21. Excessive coherence canproduce lack of differentiation in certain regions and could indicate mild head injury from birth trauma or stroke.
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- 24. EEG characteristics aregraded for performance efficiency in four categories: Relative Power, Asymmetry, Coherence, and Phase.
- 25. Topographic Brain mapsanswer the questions: “Are brain frequencies and patterns appropriate for the task?” “Are the proper brain areas engaging to yield maximum performance?”
- 26. EEG characteristics aregraded for performance efficiency in four categories: Relative Power, Asymmetry, Coherence, and Phase.
- 27. Asymmetry looks atvoltage differences between brain areas, and answers the question: “Are electrical impulses in these regions excessively high or deficiently low for good performance?
- 29. The magnitude (theenergy of each frequency group at the 19 electrode sites) and the relationship between the brain's various frequencies are calculated for efficiency.
- 30. The caudate nucleusas an element of the Executive System of the Brain • The caudate nucleus receives inputs from the whole association cortex of the human brain
- 31. Specialization of corticalareas (reading and hearing) • The PET scan on the left shows two areas of the brain that become particularly active when volunteers read words on a video screen: the primary visual cortex and an additional part of the visual system, both in the back of the left hemisphere. • Other brain regions become especially active when subjects hear words through ear- phones, as seen in the PET scan on the right.
- 32. Damage to CorticalVisual Areas
- 33. Occipital lobe: problems associatedto damage • Defects in vision (Visual Field Defects, Scotomas). • Difficulty with identifying colors (Color Agnosia). • Production of hallucinations • Visual illusions - inaccurately seeing objects. • Word blindness - inability to recognize words. • Difficulty in recognizing drawn objects. • Inability to recognize the movement of an object (Movement Agnosia). • Difficulties with reading and writing. • Damage to one side of the occipital lobe causes homonomous loss of vision with exactly the same "field cut" in both eyes
- 34. Temporal lobe: problems associatedto damage • Difficulty in recognizing faces (Prosopagnosia). • Difficulty in understanding spoken words (Wernicke's Aphasia). • Disturbance with selective attention to what we see and hear. • Difficulty with identification of, and verbalization about objects. • Short-term memory loss. • Interference with long-term memory • Increased or decreased interest in sexual behavior. • Inability to catagorize objects (Catagorization). • Right lobe damage can cause persistant talking. • Increased aggressive behavior.
- 35. Frontal lobe: problemsassociated to damage• Loss of simple movement of various body parts (Paralysis). • Inability to plan a sequence of complex movements, such as making coffee (Sequencing and Short Term Memory impairment). • Loss of spontaneity in interacting with others (Abulia). • Loss of flexibility in thinking, persistence of a single thought (Perseveration). • Imitative and utilization behavior. • Inability to focus on task (Attending). • Changes in social behavior, in personality, in mood (Emotionally Labile).. • Inability to express language (Broca's Aphasia).
- 36. Prefrontal cortex: functions •Planning of behavior (including social)on the basis of integration of sensory and verbal information, emotions and internal state. • Setting ideas, schemes, goals. • Maintaining of working memory • Inhibitory control
- 37. Basal ganglia-thalamo-cortical loop • Thebasal ganglia, substantia nigra, subthalamic nucleus are the elements of cortico- subcortical loop that mediate control of sensory, motor and cognitive functions. This control includes working memory and executive functions.
- 38. Cortico-hippocampal loop • Thisloop is implicated in emotional processing and consolidation of episodic memory.
- 39. Lateral Prefrontal Cortex: Workingmemory • Lateral prefrontal cortex provides a transient buffer for sustaining information stored in other cortical regions. In this example, the person is telling a friend about her work across the Golden gate Bridge. Long-term memories are stored in specific cortical areas and are activated by the LPC.
- 40. Frontal cortex: inhibition Short-latencyauditory evoked potentials reveal filtering deficits in patients with lesions in the lateral prefrontal cortex. Top: No change in patients with parietal lobe lesions. Middle: Reduction in patients with temporo-parietal damage, reflecting the loss of neurons in auditory cortex. Bottom: Amplification in patients with frontal damage, suggesting a loss of inhibition from frontal lobe to temporal lobe.
Editor's Notes
- #2 During the 1970’s and 1980’s there was a great deal of experimentation with QEEG. In the 1990’s (called “The Decade of the Brain” by former President Bush) there were over 500 peer-reviewed articles written on QEEG. The American Medical EEG Association AD Hoc Committee on QEEG has stated that QEEG “ …is of clinical value now and developments suggest it will be of even greater use in the future.” The QEEG has been documented scientifically to aid in the evaluation of conditions such as mild traumatic brain injury, ADD, ADHD, learning disabilities, stroke, epilepsy, and even in predicting outcomes from treating conditions such as alcoholism and drug abuse. The American Psychological Association has also endorsed QEEG as being within the scope of practice of psychologists who are appropriately train
- #23 During the 1970’s and 1980’s there was a great deal of experimentation with QEEG. In the 1990’s (called “The Decade of the Brain” by former President Bush) there were over 500 peer-reviewed articles written on QEEG. The American Medical EEG Association AD Hoc Committee on QEEG has stated that QEEG “ …is of clinical value now and developments suggest it will be of even greater use in the future.” The QEEG has been documented scientifically to aid in the evaluation of conditions such as mild traumatic brain injury, ADD, ADHD, learning disabilities, stroke, epilepsy, and even in predicting outcomes from treating conditions such as alcoholism and drug abuse. The American Psychological Association has also endorsed QEEG as being within the scope of practice of psychologists who are appropriately train
- #24 During the 1970’s and 1980’s there was a great deal of experimentation with QEEG. In the 1990’s (called “The Decade of the Brain” by former President Bush) there were over 500 peer-reviewed articles written on QEEG. The American Medical EEG Association AD Hoc Committee on QEEG has stated that QEEG “ …is of clinical value now and developments suggest it will be of even greater use in the future.” The QEEG has been documented scientifically to aid in the evaluation of conditions such as mild traumatic brain injury, ADD, ADHD, learning disabilities, stroke, epilepsy, and even in predicting outcomes from treating conditions such as alcoholism and drug abuse. The American Psychological Association has also endorsed QEEG as being within the scope of practice of psychologists who are appropriately train