Doctor insights on:
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 moreSee 2 more doctor answers
Strattera (atomoxetine) increases: Neurotransmitters, chemicals including norepinephrine and (somewhat) dopamine, that conduct messages from one nerve cell to the other and thus improves the function in certain parts of the brain responsible for focus of attention, holding thoughts in working memory long enough to work with them, and screening out distactions that may interfere with attention. ...Read more
No physical symptoms: An XL spike on EEG is basically just a sudden brief burst of electrical activity that doesn't actually create the outward signs of a seizure. "Events" may be similar, but more of a subclinical seizure, evidence for seizure activity on the EEG but no outward physical sign of seizure. ...Read more
Upper/lower?: Upper=stomach endoscopy, usually no prep except not eating/drinking x 4 hrs, then sedation via iv, and doc puts scope through mouth and throat into stomach, looks and biopsies if needed. Lower=colonoscopy, prep by flushing system with strong prep laxatives, then sedation via iv, and scope enters via anus and looks at 5 feet of colon, biopsies etc. ...Read more
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 moreSee 1 more doctor answer
Doppler effect: The echocardiogram utilizes ultrasound and a principle called the doppler effect. Doppler effect means sound waves are reflected at different velocities and this information is electronically transformed to allow visualization of structural details and provide information about blood flow velocities. ...Read moreSee 1 more doctor answer
Bounces sound waves: An echocardiogram is simply an ultrasound. Like any other ultrasound, including those used by fishing boats, the fundamental principle is to send high-frequency sound waves into the target (heart) and measure the time it takes to return to the transducer (echo). The resulting picture is a measure of the distance traveled and the physical properties of the material it passed through. ...Read moreSee 1 more doctor answer
Artificial pacemaker: Artificial (implantable) pacemakers are mostly regulated by a sensor that recognizes motion. It's similar to the sensor that changes your phone/ipads display from portrait to landscape, based on the direction of the device. There are other sensors, such as ones that measure the density of blood in the heart and chest motion (simulating breathing). Get your routine pacemaker maintenance checks. ...Read moreSee 2 more doctor answers
Laboratory: First you obtain a sample of the tissue or fluid . Second to send it to the pathology laboratory for identification, benign or malignant, classification if malignant, then for referral for treatment, even if not malignant. ...Read more
Getting to know you: I would gather a very detailed history - way back to childhood all through time until now and even ask lots about family members. I'd ask for a description of your highs and lows - details of what they include, how long they last and how they feel & cycle. If there are calm times too. I might even witness a mood episode or two. So far, i know of no quick test. I'm concerned if a faster DX is made. ...Read more
- Talk to a doctor live online for free
- What does an eeg test for?
- Does alcohol affect a eeg?
- How does antibiotics work?
- Ask a doctor a question free online
- How does progesterone work?
- How does the heart work?
- How does the bladder work?
- How does soccer work?
- Talk to a neurologist online