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Topic: EEG

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In the News (Wed 21 Aug 19)

  Electroencephalography - Wikipedia, the free encyclopedia
EEG can also be used in conjunction with other types of brain imaging.
Neuroscientists and biological psychiatrists use EEGs to study the function of the brain by recording brainwaves during controlled behavior of human volunteers and animals in lab experiments.
With halogenated anesthetics and intravenous agents such as propofol, a rapid (alpha or low beta), nonreactive EEG pattern is seen over most of the scalp, especially anteriorly; in some older terminology this was known as a WAR (widespread anterior rapid) pattern, contrasted with a WAIS (widespread slow) pattern associated with high doses of opiates.
en.wikipedia.org /wiki/Electroencephalogram   (1292 words)

 Electroencephalogram (EEG)
EEG is the most useful and important test in confirming a diagnosis of epilepsy.
The EEG record is analyzed by a doctor who is specially trained to diagnose and treat disorders affecting the nervous system (neurologist).
The EEG records abnormalities in the brain waves that may not be confined to one specific area of the brain.
my.webmd.com /hw/epilepsy/aa22249.asp   (2047 words)

 The Secret Life of the Brain : Scanning the Brain: EEG
An EEG is a recording of electrical signals from the brain made by hooking up electrodes to the subject's scalp.
EEGs allow researchers to follow electrical impulses across the surface of the brain and observe changes over split seconds of time.
An EEG can show what state a person is in -- asleep, awake, anaesthetized -- because the characteristic patterns of current differ for each of these states.
www.pbs.org /wnet/brain/scanning/eeg.html   (266 words)

 BioMedical Instruments -- Intro to EEG   (Site not responding. Last check: 2007-11-07)
The EEG trace is usually taken in a hospital or a laboratory setting by men in white coats in front of daunting apparatus.
A machine which analyses the EEG signal into its separate components easily differentiates between a calm person solving a problem in mental arithmetic and a person who is reacting to the test ambience.
This is because the muscles are near the surface of the skin and produce large signals whereas the signal which is of interest originates deep in the brain and is severely attenuated in passing through the skull.
www.bio-medical.com /EEG.html   (934 words)

 EEG Biofeedback
EEG Biofeedback is a learning strategy that enables persons to alter their brain waves.
EEG Biofeedback is used for many conditions and disabilities in which the brain is not working as well as it might.
If your doctor is familiar with EEG Biofeedback in general, he may still be thinking in terms of the more common early experiments with alpha wave training, rather than with the training we are dealing with here.
www.eegbiofeedback.cz /english/english.php?menu=faq   (1631 words)

 EEG During Carotid Endarterectomy   (Site not responding. Last check: 2007-11-07)
EEG monitoring is frequently employed in many institutions during CEA in either a continuous or intermittent fashion and has been predominantly used to detect cross-clamp related cerebral ischemia.
Continuous EEG monitoring is preferable since a significant number of strokes do not occur during the period of carotid cross-clamping but after the repair and often result from intraoperative embolization or hyperperfusion.
EEG monitoring is often employed to determine the need for an intraluminal shunt during the period of carotid cross-clamping.
needle.anest.ufl.edu /anest2/mahla/snacc/EEG/eeg_during_cea.html   (664 words)

 MedlinePlus Medical Encyclopedia: EEG
The test is performed by an EEG technician in a specially designed room that may be in your health care provider's office or at a hospital.
The EEG may be done to confirm brain death in a comatose patient.
EEG cannot be used to "read the mind", measure intelligence, or diagnose mental illness.
www.nlm.nih.gov /medlineplus/ency/article/003931.htm   (757 words)

 eMedicine - EEG in Common Epilepsy Syndromes : Article by Raj D Sheth, MD   (Site not responding. Last check: 2007-11-07)
EEG is an essential component in the evaluation of epilepsy.
The EEG changes significantly with gestational age; therefore, calculation of gestational age and familiarity with age-specific norms is crucial in interpretation of the EEG in infants.
West syndrome is a triad of infantile spasms, developmental retardation or regression, and hypsarrhythmia on EEG.
www.emedicine.com /neuro/topic108.htm   (2511 words)

 EEG   (Site not responding. Last check: 2007-11-07)
The EEG or electroencephalogram is a record of electrical activity in the human brain.
An abnormal EEG does not in and of itself mean that the patient has a seizure disorder, nor does a normal EEG mean that there is definitely no problem.
The EEG is one of the tools a neurologist uses in the diagnosis of brain conditions.
www.sleeptight.com /EncyMaster/E/EEG.html   (71 words)

 About EEG's   (Site not responding. Last check: 2007-11-07)
An EEG is the most important test to identify epilepsy.
The EEG picks up electrical activity in the brain and draws squiggly lines representing them on paper or a computer.
The EEG is so sensitive that it is picking up movement in the room - the fl vertical stripe on the computer screen was from when I wiggled on the bed.
library.thinkquest.org /J001619/eeg.html   (213 words)

 EEG Biofeedback Information Summary
EEG brainwaves in individuals with ADD contain a high ratio of slow waves (theta EEG, 4-8 Hz) to fast activity waves (beta EEG, 16-20 Hz) as compared to persons without ADD.
Sensors placed on the head record EEG waves, which are represented on the computer screen as a spectrum of frequencies, which are used by the clinician to calibrate the training exercises to follow.
During training sessions, the subject is presented with a series of tasks (reading, listening to stories, etc.) and is rewarded by changes in the game on the computer screen when he or she produces a certain level of beta wave activity.
www.mind-gear.com /biofeed.htm   (1499 words)

 How it works with EEG   (Site not responding. Last check: 2007-11-07)
An EEG is recorded by attaching 4 small wires to the head with easily removable disposable tabs to view the brain’s activity on the computer screen.
A second EEG is recorded for comparison to the first EEG to measure the effect and results of the training session.
This EEG is used to determine the next session setting for the light and sound training frequencies.
www.alphalearning.ch /how_it_works.htm   (1107 words)

EEG Biofeedback treatment for Attention Deficit Disorders with or without hyperactivity and Learning Disabilities has emerged as an important component in enhancing attention, cognitive functioning and behavior.
The EEG Biofeedback consisted of computerized Autogenic A620 and Biocomp instrumentation using a bipolar placement at CZ and Pz The EEG Biofeedback protocol reinforced the enhancement of Beta brain waves (16-20 Hz) and the suppression of Theta brain waves (4-8 Hz) Muscle tension artifact (EKG) was also suppressed as part of this training protocol.
The significant improvements in intellectual functioning as measured by increases in IQ scores, may be the result of the treatment having an impact on the subjects' ability to attend and concentrate, hence enhancing performance on the subtests which comprise the K-BIT rather than actually increasing their intellectual potential.
www.biof.com /linden.html   (868 words)

 Journal of Neurotherapy (2-4)6 Copyright 1995-2000   (Site not responding. Last check: 2007-11-07)
The purpose of this study was to apply EEG biofeedback technology in an actual school setting with all of the inherent problems, issues, and distractions that are likely to occur in such a setting.
On the positive side, studies have shown EEG biofeedback to be an effective alternative to the use of psychostimulant medication for many children diagnosed with attention deficit/hyperactivity disorders.
EEG biofeedback can become part of the student’s scheduled weekly activities so that there is little or no interference with other educational activities.
www.snr-jnt.org /JournalNT/JNT(2-4)6.html   (2437 words)

 EEG (Electroencephalography)
The EEG is the key test in diagnosing, pinpointing, and managing certain areas of unstable electrical impulses in the brain that cause epilepsy (in other words, the EEG tries to find the seizure foci).
EEGs can identify other very rare seizure syndromes, and are also used to judge the effectiveness of anti-convulsion therapy, which is used in the treatment of seizure disorders.
Although EEGs may record the lack of electrical activity in some comatose patients, which can be used as evidence of brain death, in many other instances EEGs turn up treatable conditions like otherwise undetected seizures disorders or chemical imbalances.
www.kidshealth.org /parent/general/sick/eeg.html   (794 words)

 EEG   (Site not responding. Last check: 2007-11-07)
EEG is een onderzoek waarbij de hersenfunktie wordt onderzocht.
Het is verstandig een fles drinken en een vertrouwde "knuffel" mee te nemen.
Wanneer u een nuchter-waak EEG moet ondergaan is het de bedoeling dat u vanaf 's avonds circa 22.00 uur tot de volgende dag het moment van het onderzoek niet meer eet of slaapt.
www.neurochirurgie-zwolle.nl /eeg.html   (455 words)

 EEG Biofeedback FAQ   (Site not responding. Last check: 2007-11-07)
We observe that if the EEG is not well-behaved under these circumstances, there may be adverse impacts on learning ability, on moods, on sleep, and on behavior.
A prescription for the training, along with a diagnosis, may be required from a physician under the medical part of the plan, or from a licensed psychologist under the mental health services part of the plan.
EEG and behavioral changes in a hyperactive child concurrent training of the sensorimotor rhythm (SMR): A preliminary report.
users.aol.com /eegspectrm/articles/faq.htm   (1316 words)

 Introduction to EEG
The electroencephalogram (EEG) is a recording of the electrical activity of the brain from the scalp.
The first recordings were made by Hans Berger in 1929 although similar studies had been carried out in animals as early as 1870.
EEG activity is quite small, measured in microvolts (µV) with the main frequencies of interest up to approximately 30 Hertz (Hz).
www.ebme.co.uk /arts/eegintro   (341 words)

 EEG and nerve pulse
For certain propagation velocities of EEG wave resonance coupling to the eigen frequencies of cell membrane results: this gives connection with the EEG model of Green and Triffet, in which EEG frequencies are successfully identified as eigen frequencies of the cell membrane.
One obtains an estimate for the amplitude of the EEG oscillations (associated with glial cells) from the fact that the amplitude of EEG oscillations is roughly a fraction of order p sim 10^(-3) of resting potential.
EEG of glial cell groups coordinates the coherent firing of neurons and 10^(10) Hz 'EG' associated with neurons themselves coordinates the conformational dynamics of microtubules (and possibly of other structures, too) inside coherently firing neurons.
www.physics.helsinki.fi /~matpitka/eeg6.html   (10471 words)

 Epilepsy Action: EEG (Electroencephalogram)
It is important to keep still during the EEG as body movement can be recorded, making it difficult for the specialist to interpret the results of the test.
While the EEG cannot, in itself, diagnose epilepsy, it is a useful tool in helping with the diagnosis and treatment of epilepsy.
Further information about the EEG is available from Epilepsy Action by using the Email Helpline or if you live in the UK, by phoning the Freephone Helpline on 0808 800 5050.
www.epilepsy.org.uk /info/eeg.html   (1031 words)

 eMedicine - Normal EEG Variants : Article by Sydney Louis, MD   (Site not responding. Last check: 2007-11-07)
The typical pattern of subclinical rhythmic EEG discharges in adults (SREDA) consists of theta rhythm occurring in a widespread manner, maximal over the parietal and posterior temporal regions, and lasting for a few seconds to a minute without clinical signs or symptoms.
Although the mechanism of SREDA is not understood, it appears to represent a benign EEG phenomenon that should be distinguished from seizure discharges.
EEG is a complex summation of many frequencies.
www.emedicine.com /neuro/topic274.htm   (1409 words)

These interseizure EEG effects are also necessary for a successful treatment course (Fink and Kahn(.
Fink cites himself as he is wont to do but I have no quarrel with his assertion that EEG abnormalities are correlated with therapeutic "benefit" as long as Dr. Fink gets to decide what the benefit is.
EEG slowing and seizure activy abnormal and undesirable by from the point of view of a neurologist, most doctors and all patients.
www.idiom.com /~drjohn/ecteeg.html   (356 words)

 EEG Research in CS at CSU
At CSU we are investigating the possibility of using EEG as another mode of human-computer input, for possible use by paralyzed persons or by anyone for rudimentary user-interface actions, like popping up windows or making menu choices.
Ford, Analysis of LVQ in the Context of Spontaneous EEG Signal Classification.
EEG Research in CS at CSU, Charles W.
www.cs.colostate.edu /~anderson/res/eeg   (2131 words)

 Serial EEG in Alzheimer's disease: 3 year follow-up and clinical outcome   (Site not responding. Last check: 2007-11-07)
Although the majority of the patients showed slowing of the EEG over 3 years, evolutions of the EEG changes were not equal in all patients.
In 12 (50%) of the patients the EEG from T6-O2 derivation was normal or slightly abnormal in the initial record and remained stable during 1 year.
EEG slowing at the time of diagnosis was predictive of poor outcome at year 3; absolute theta amplitude was the best discriminating variable of outcome.
www.uku.fi /neuro/ab9102.htm   (219 words)

 LHSC EEG/Epilepsy Unit
The EEG department is located on the 10th floor south, in the outpatient area.
The EEG Department and Epilepsy Unit at LHSC is a service department providing technical and clinical assistance to the medical and surgical staff in the diagnosis and treatment of neurological and related disorders.
The EEG is most useful in the investigation and management of epilepsy.
www.lhsc.on.ca /eeg/eegs.htm   (247 words)

 EEGinfo.com - The Complete Neurofeedback Resource
Also referred to as EEG biofeedback, this powerful brain-based technique has been successfully helping clients around the world for over 30 years.
You can link to the EEG bulletin board to buy and sell used EEG equipment; locate neurofeedback training courses and conferences; search for biofeedback books, and review a wealth of neurotherapy research and reference material including articles by Dr. Siegfried Othmer.
The authors specialize in the use of EEG biofeedback techniques (also called neurofeedback) for the attention, behavior, mood, and learning problems of children and adults.
www.eeginfo.com   (416 words)

 EEG maturation
In this project we aim to determine normative data with respect to EEG maturation and developmental synchronies in MZ and DZ twins during adolescence.
Due to the large sample size, cross-sectional as well as longitudinal analyses can be expected to yield robust estimates of the "natural" variability of EEG maturation in males and females, as well as of the degree to which EEG maturation is synchronized in MZ twins.
Lykken D.T., Tellegen A. and Iacono W.G. (1982) EEG spectra in twins: evidence for a neglected mechanism of genetic determination.
www.bli.unizh.ch /BLI/Projects/EEG/K236.html   (1066 words)

 EEG : Epilepsy.com
EEG is the name commonly used for electroencephalography (e-LEK-tro-en-SEF-uh-LOG-rah-fee).
EEG is the most important test for diagnosing epilepsy because it records the electrical activity of the brain.
EEGs always used to be recorded on paper, but computerized, paperless EEGs are now used more often.
www.epilepsy.com /epilepsy/testing_eeg.html   (341 words)

 Diagnosing Epilepsy with Electroencephalogram of EEG
An EEG, or electroencephalogram, is a test in which the electrical signals of the brain are recorded.
If you are being evaluated for a sleep disorder, EEG may be performed continuously during the night while you are asleep.
A neurologist examines the EEG recording for abnormalities in the brain-wave pattern, which may reflect diseases of the nervous system.
my.webmd.com /content/article/87/99664.htm?...   (366 words)

 Reduction of ECG and gradient related artifacts in simultaneously recorded human EEG/MRI data. (ResearchIndex)   (Site not responding. Last check: 2007-11-07)
It is even possible to acquire EEG signals during an MR imaging sequence.
However, such EEG signals are severely distorted by artifacts originating from various e#ects (e.g., MR gradients, ECG).
2 The amplitude and distribution of EEG pulse artifact in the..
citeseer.ist.psu.edu /545209.html   (377 words)

 EEG Readings
Both EEG's have demonstrated seizure patterns and abnormal activity in the posterior region in the right side of the brain.
Based on these EEG's alone I would recommend treatment for a period of time, or more prolonged EEG monitoring to determine if she is having subtle seizures.
The day he had his EEG he seemed to me to be having a good day I even asked to EEG tech if we should have the EEG when he is doing so well.
www.medhelp.org /forums/neuro/messages/33156.html   (557 words)

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