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Doctor insights on: How Does An Eeg Work

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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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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 does the EEG test work?

How does the EEG test work?

Records brain: Electrical activity occurs thruout the body, and like an electrocardiogram recording heart activity, small discs are taped to specific areas of the scalp, and pickup underlying electrical impulses from brain activity. The rhythms vary during sleep and waking, and are compared to normal expectations. Diffuse slowing may correlate with diffuse problems, and paroxysmal activity may indicate seizure. ...Read more

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I had an eeg, following it I got extremely hot and it felt like my brain got burned hard to function ever since, had to take leave from work how to tel damage?

I had an eeg, following it I got extremely hot and it felt like my brain got burned hard to function ever since, had to take leave from work how to tel damage?

Strange: An eeg is a study of electrical wave patterns of the brain. The electrodes do not transmit any energy or electrical waves, it only records the electrical waveforms generated by your brain. Best to follow up with your neurologist. ...Read more

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My 23 yr old son had a first seizure a month and a half ago eeg, mri, cats can all fine blood work fine why are chances he will not have another?

Get the crystal ball: How frightening for you and your son! but I am so happy to hear that the mri, ct, and blood work are normal; what a relief. Sometimes medications can induce seizures; i imagine this has been ruled out. While this is personal, i don't mind sharing that i had a single seizure while in residency training - back in l985. None since, and i'm a very busy, active physician. Good luck to you and your son. ...Read more

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I have reoccurring bell's palsy have had lots of tests. Nothing abnormal. What should I do now? Mri EEG sleep study. Blood work. Getting it monthly

See a specialist: Recurrence of bell's palsy is rare. If not done already, you should have an imaging study such as a ct scan or MRI scan. You also should have a complete evaluation by a facial surgeon or neurologist who is familiar with the management of bell's palsy. ...Read more

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3 wks stomach spasms Lft side getting worse where he can't standor work without getting one. Had eeg, CT scan, MRI and no answers. No meds r working.

3 wks stomach spasms Lft side getting worse where he can't standor work without getting one. Had eeg, CT scan, MRI and no answers. No meds r working.

See answer: Sorry to learn of his problems. Not a very common symptom. In addition to getting additional opinions from local physicians an online consultation at health tap may be helpful. Best would be an InBox Text consult. BUT you would need to upload copies of any studies and be available to answer questions. Also go to CrowdMed > http://bit.ly/1QHSTqT Get well soon ...Read more

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Can a doctor refuse to sign a form to get your drivers license bavk after having a EEG done and not finding seizure activity? Passed out for just a few seconds at work bck in october due to breathing in a chemical and hospital turned it in to penndot as a

Can a doctor refuse to sign a form to get your drivers license bavk after having a EEG done and not finding seizure activity? Passed out for just a few seconds at work bck in october due to breathing in a chemical and hospital turned it in to penndot as a

Hello. : Hello. I can't place judgment in situation. The issue is that an eeg may not be abnormal at the time it is being done, even if the person has a health problem. The doctor has some degree of responsibility for safety if there is concern that the history or physical examination was consistent with a seizure. I know when I have had to not recommend driving for patients with dementia, i usually felt bad because it was so upsetting for the patient. However, i had to do what i believed was ethically and medically the right thing. There is an avvo legal site in which you can ask this from a legal perspective if desired. Take care. ...Read more

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Colored spots in vision daily that come and go and have had constant visual aura for 15 years. Mri EEG blood work eye exam all normal. What is this?

Colored spots in vision daily that come and go and have had constant visual aura for 15 years. Mri EEG  blood work eye exam all normal. What is this?

Retinal exam: Floaters are usually not described as having colors. The description you provide does not suggest a single problem but may be due to pathology of the retina not observed in your exam. Did an ophthalmologist perform your exam? If so, may I suggest that you are having a variant of migraine. Ask your primary care doctor if this is a possibility. ...Read more

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Reflexes don't work,tingling,migraines,severe memory loss&pain,nightly low fevers,dark bruises etc!MRI&EEG neg!will neuro not help me after follow-up?

Sure neuro will help: Your neuro provider should be especially helpful with the migraines and and the tingling. Perhaps a treatment like amitriptyline would help. It is good at suppressing tingling, it is a class A migraine preventer, and sometimes. Perhaps your memory is connected. The night time fevers and bruising are not always related to neurology, and they may need to ask for some assistance regarding those. ...Read more

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