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Doctor insights on: Imaging Eeg Electroencephalogram

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What is an electroencephalogram (eeg)?

What is an electroencephalogram (eeg)?

Tests brain activity: A noninvasive, painless exam where electrodes are placed on scalp and electrical activity is recorded via computer. Patient usually sits in a chair, or lays on a stretcher. Indications include seizures and other causes of brain dysfunction. May be used to both diagnose and monitor a seizure disorder. ...Read more

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Dr. Jeffrey Cohen
381 doctors shared insights

Eeg (Definition)

An electroencephaolgram (eeg) is a test that uses wires on the scalp to measure electrical activity produced by the brain. It is used to assess cerebral activity, and can be very helpful in the diagnosis and treatment of seizures as well ...Read more


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How much tome to take EEG testing (electroencephalogram)?

20-40 minutes: Putting the electrodes in place initially takes 20-30 minutes, and then the test proper takes 20-40 minutes after that. Sometimes people will get an "ambulatory eeg, " in which the study goes on for days at a time, but these are much less common. ...Read more

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What doctor inteprets a EEG (electroencephalogram)?

Neurologist: Diagnostic eegs are read by neurologists. Neurosurgeons are trained to read eegs as they relate to lesions to be removed during epilepsy surgery. ...Read more

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Can an EEG (electroencephalogram) detect brain tumors?

Can an EEG (electroencephalogram) detect brain tumors?

No: Eeg can show presence of seizure brain wave activity.These seizure brain activity can be caused by different conditions such as metabolic abnormality, lack of blood supply to brain cells, medication, epilepsy, brain tumor related, etc. It analyzes the brain "function" not the anatomy thus it can't detect brain tumor specifically. Mri needs to be done to detect brain tumors. Discuss with your md. ...Read more

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What is an EEG for?

What is an EEG for?

Brain activity: Eeg is a test of physiological function, and records brain electical activity (like electrocardiogram for heart). It is used to check for seizure activity, to evaluate various headache issues, to check patients with memory loss, evaluated folks with brain infections, and also confirm brain death. ...Read more

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How does an EEG work?

How does an EEG work?

Captures brain waves: Scalp electrodes are placed on designated brain areas. They are connected to amplifiers and to computers, which records brain electrical activity, for a minimum of 20 minutes. Information is filtered and displayed on a computer screen. It is interpreted by a neurologist. Different brain waves may be abnormal or normal. Eeg may be used to detect seizures, or other non-seizure abnormalities. ...Read more

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How reliable is an eeg?

VAGUELY ACCURATE: An EEG is a recording of brain electrical activity taken over the scalp, over about 45 minutes. This brief period may completely miss many paroxysmal events and provide a false negative/normal result. Work with direct electrodes implanted into brain have convincingly demonstrated far more pathology than external recordings. So, basically "hit or miss" issues, and better to clinically assess. ...Read more

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Can add show up on a eeg?

Can add show up on a eeg?

NO: Add or adhd is neurobehavioral and biochemical disorder and diagnosed clinically. Eeg will not show any features of add.However, egg can rule out conditions such as absence seizures that can present as staring spells. Egg is not needed for diagnosis of add. ...Read more

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What does the EEG measure?

Brain activity: Eeg is a test of physiological function, and records brain electical activity (like electrocardiogram for heart). It is used to check for seizure activity, to evaluate various headache issues, to check patients with memory loss, evaluated folks with brain infections, and also confirm brain death. ...Read more

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