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Doctor insights on: How Does An Eeg Work

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Dr. Julian Bragg Dr. Bragg
Neurology
13 years in practice
Emory University School of Medicine
1

1
How does an EEG work?

How does an EEG work?

Electrical recording: In the same way an ekg measures electrical activity from the heart, an EEG measures activity from the brain. Electrodes are placed on the scalp and the patient lies quietly while brainwaves are recorded. Sometimes, hyperventilation and/or flashing lights are used to evoke different responses. It is important to relax, as electrical activity from muscle can swamp the signals from the brain. ...Read more

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Dr. Jeffrey Cohen
396 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


Dr. Bennett Machanic Dr. Machanic
Neurology
48 years in practice
Johns Hopkins University School of Medicine
2

2
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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Dr. Kenneth Cheng Dr. Cheng
Family Medicine
27 years in practice
Western University of Health Sciences College of Osteopathic Medicine of the Pacific
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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

Dr. Linda Gromko Dr. Gromko
Family Medicine
44 years in practice
Washington University School of Medicine
4

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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

Dr. Chaim Colen Dr. Colen
Neurosurgery
15 years in practice
University of Puerto Rico School of Medicine
5
Dr. John Hoffmann Dr. Hoffmann
Surgery - Plastics
34 years in practice
Baylor College of Medicine
6

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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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Dr. David Lipkin Dr. Lipkin
Internal Medicine
48 years in practice
Howard University College of Medicine
7

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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

Dr. Heidi Fowler Dr. Fowler
Psychiatry
21 years in practice
Uniformed Services University of the Health Sciences F. Edward Hebert School of Medicine
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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

Dr. Olav Jaren Dr. Jaren
Neurology
15 years in practice
The University of Iowa Roy J. and Lucille A. Carver College of Medicine
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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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Dr. Lois Freisleben-Cook Dr. Freisleben-Cook
Pediatrics
37 years in practice
UCLA School of Medicine
10

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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

Dr. William Lages Dr. Lages
Internal Medicine - Rheumatology
64 years in practice
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Seeing colored spots in vision on and off daily have had EEG MRI blood work and eye exam all normal. Could this be physiological? I do have anx, ocd.

Seeing colored spots in vision on and off daily have had EEG MRI blood work and eye exam all normal. Could this be physiological? I do have anx, ocd.

Don,t worry: You have adequate tests to rule out diseases. Many people have this,and after normal tests no diseases show up long term. Relax and Don,t label yourself. Seeking reassurance Is O.K. and behavior modification therapy is the way to go. ...Read more

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Dr. Bennett Machanic Dr. Machanic
Neurology
48 years in practice
Johns Hopkins University School of Medicine
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I get dizzy every day since I gave birth 4 months ago. I had a CT scan, MRI, EEG, blood work done with normal results. What could it be?

I get dizzy every day since I gave birth 4 months ago. I had a CT scan, MRI, EEG, blood work done with normal results. What could it be?

Suggestions: Your testing appears to rule out central causes of dizziness in brain, and systemic causes due to anemias, or bodily disorders, BUT does NOT exclude inner ear pathology, which should be evaluated. See an otolaryngologist and get appropriate testing, as inner ear pathology can be treated with vestibular rehabilitation by a skilled physical therapist. ...Read more

Dr. Inaam Schneider Dr. Schneider
Internal Medicine
40 years in practice
Wayne State University School of Medicine
13

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Colored spots in vision that come and go daily? Seen neurologist, pcp and had eye exam, Mri EEG blood work all normal. What could be going on?

Colored spots in vision that come and go daily? Seen neurologist, pcp and had eye exam, Mri EEG blood work all normal. What could be going on?

Ocular migraines: Colored spots in your vision with out the headache , with normal neurological exam and normal neurological work up is most likely due to Occular migraines . It is like having a migraine in your eye , without the pain . Fortunately , they are just annoying and do not last long . ...Read more

Dr. Heidi Fowler Dr. Fowler
Psychiatry
21 years in practice
Uniformed Services University of the Health Sciences F. Edward Hebert School of Medicine
14
Dr. Leonard Pizzolatto Dr. Pizzolatto
General Practice
37 years in practice
University of Medicine and Dentistry of New Jersey - New Jersey Medical School
15
Dr. Olav Jaren Dr. Jaren
Neurology
15 years in practice
The University of Iowa Roy J. and Lucille A. Carver College of Medicine
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Black outs, seizures, headache, weakness, slurred speech, dizziness. Test done, EEG, CT, MRI, blood work. ALL negative, what other test are there?

Black outs, seizures,  headache, weakness, slurred speech, dizziness. Test done, EEG, CT, MRI, blood work. ALL negative, what other test are there?

One suggestion: Echocardiogram testing sometimes shows a large PFO in a case like this, and it might be considered an option. It is good that the other tests are normal- don't give up. ...Read more

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Dr. Salman Saeed Dr. Saeed
Neurology
29 years in practice
University of Karachi, Dow Medical College
17
Dr. Eric Weisman Dr. Weisman
Neurology
32 years in practice
St. George's University School of Medicine
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Eeg MRI CT eye exam blood work and carotid all normal. Seeing colored spots constantly and what looks like heat waves that worsen during mensus?

Eeg MRI CT eye exam blood work and carotid all normal. Seeing colored spots constantly and what looks like heat waves that worsen during mensus?

Migraine equivalent: Migraine aura without cephalgia (head pain) is referred to as migraine equivalent. Similar in many ways to focal seizures. I would discuss this with a neurologist (bring a copy of your eeg on disk for them to review) that should give you a good leg up on things. ...Read more

Dr. Dariush Saghafi Dr. Saghafi
Neurology
29 years in practice
Autonomous University of Guadalajara Faculty of Medicine
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Eeg MRI CT eye exam blood work and carotid all normal have been seeing colored spots in constantly with what looks like heat waves worse during mensus?

Eeg MRI CT eye exam blood work and carotid all normal have been seeing colored spots in constantly with what looks like heat waves worse during mensus?

Sound like migraine: Your symptoms sound like the visual aura of migraine headache and if they are particularly unbearable during or just before menses begin then, you are describing what can be looked at menstrual migraines perhaps. Your eyes are likely fine. ...Read more

Dr. Edwin Ishoo Dr. Ishoo
ENT - Head & Neck Surgery
24 years in practice
University of Michigan Medical School
20

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Colored spots in vision that's worse when anxious increased floaters and pulsating vision when I cough? Have had EEG MRI CT blood work had eyes exam.

Colored spots in vision that's worse when anxious increased floaters and pulsating vision when I cough? Have had EEG MRI CT blood work had eyes exam.

Visual disturbance: You are likely forcing the doctors to do a multimillion dollar work up for an anxiety disorder since you have no organic pathology on any tests. Please consider consulting a mental health specialist specializing in treatment of depression, anxiety and Somatization disorder. Why are you on depakote? there is no condition listed to explain your meds. ...Read more