What external factors can effect an EEG result?
442130
it is importain to be sleep deprived for the test. everything else should be done as you normally would do. the things they do during the test could possibly cause you to have a seizure...for example you'll have to do a breathing excersise which is basically hyperventilation and you'll do that for approximately 3-5 mins. theyll ask you to take a nap and seizures and interictal activity may show up then as well also they will put a strobe light in front of your eyes and blink it at different frequencies.\n\nthis test is noninvasive and the only thing that may affect your test would be some drugs like barbituates and other street drugs...caffeine will increase your beta waves but nothing significant and prescriptions like prozac will make fast eye movements show up on the test but all of that can be differentiated from epileptic activity\n\nthe epileptic activity they would be looking for may or may not show up. that would depend on what area of the brain the originate from. if you have experienced seizures in the past it is very importain to describe in detail how it began...like an aura (strange smells, seeing lights, strange feelings like intense deja vu or being unable to talk; even embarrasing auras like sexual feelings right before a seizure) this information will help with determining the area of the brain that the seizure comes from.\n\nthe only bad part of the test is that there will be a little bit of paste left in your hair the good thing is though it washes right out\n\ni hope this helps
325205
Your question is a very difficult one to answer because there are a lot of variables.  Age, area of brain injured, severity of injury are just a few of the variables that would impact recovery.  Some individuals never fully recover while others have a miraculous recovery.  There is no clear cut answer to your question.
952658
Internal and external rhythm....
605283
My daughter suffers from seizures and she is much more likely to have seizures just before she menstruates.  It's just something about the hormones causing more activity in the brain.  I don't really understand it, but I know it's true.  Another thing that affects her is overworking herself.  Doing too much at one time.  when I'm around her, I try to keep her from too much strenuous activity.
43911
there could be many causes such as environment factors, stress, diet or even allergy to certain substances...
798451
I would expect light exposure variance has much to do with it. Look at how it effects circadian rhythm, for instance. Probably begins a cascade of varying hormonal changes.
258090
often it refers to the controllable factors. It could mean that other possible influences on the research have been accounted for.
401656
Damage to the human organism is dependent on frequency, distance to the source, and transmit power (in Watts)\n\nSee the following:
732648
A second battery of diagnostic tools include an electroencephalograph (EEG). This is a machine that records brain waves picked up by tiny wires taped to the head. Electrical signals from brain cells are recorded as wavy lines by the machine. Brain waves during or between seizures may show special patterns which help the doctor decide whether or not someone has epilepsy.\n\nImaging methods such as CT (computerized tomography) or MRI (magnetic resonance imaging) scans may be used to search for any growths, scars, or other physical conditions in the brain that may be causing the seizures. In a few research centers, positron emission tomography (PET) imaging is used to identify areas of the brain which are producing seizures.\n\nWhich tests and how many of them are ordered may vary, depending on how much each test reveals.
158621
I believe a big factor is stress reduction.\n\nA better diet and more exercise would probably help as well.
663038
if you are talking about alcohol;\n\nReaction\n\nAfter drinking, the brain works inefficiently, taking longer to receive messages from the eye; processing information becomes more difficult and instructions to the muscles are delayed. Alcohol can slow down reaction time by 10 to 30 per cent. It also reduces ability to perform two or more tasks at the same time.\n\n\nVision\nAlcohol reduces the ability to see distant objects and night vision can be reduced by 25 per cent. Blurred and double vision can also occur. Ability to perceive what is happening at the roadside is weakened. Loss of peripheral vision could be crucial.\n\nStimulant\nAlcohol may also create a sense of overconfidence, with the result that people are prepared to take greater risks.\n\nyou can also check out this link to the CDC and thier study;\n\nhttp://www.cdc.gov/ncipc/factsheets/drving.htm
34325
I'm a R.N. It could be petit mal seizures.  These are small electrical impulses in the brain that are misfiring. It can be very serious. If you get headaches with it, it could be migraine headache auras.  See an opthamalagist or neurologist.
641625
the area is new to you and so you need more concentration on the area map. radio volume, at an acute level, may cause a barrier to your concentration process. Even, i drive slow.
516770
Depends on conductivity of water which in turn depends on factors such as -- impurities present in water, temperature of water.
1029479
A lack of oxygen to the brain due to hypoxia can cause difficulty in cognitive function.\n\nThe influence of mind altering drugs is the other popular answer.
194758
It increases the neuronal firings in the areas the stimulant affects. It makes your central nervous system work more.
460227
They can't actually see one working. The effects ae difficult to see in action in terms of how the brain physically responds.