How do you know if your EEG is abnormal?

How do you know if your EEG is abnormal?

The electrical impulses in an EEG recording look like wavy lines with peaks and valleys. These lines allow doctors to quickly assess whether there are abnormal patterns. Any irregularities may be a sign of seizures or other brain disorders.

What is a normal EEG result?

Most waves of 8 Hz and higher frequencies are normal findings in the EEG of an awake adult. Waves with a frequency of 7 Hz or less often are classified as abnormal in awake adults, although they normally can be seen in children or in adults who are asleep.

What is EEG image?

An EEG records the electrical activity of your brain via electrodes affixed to your scalp. EEG results show changes in brain activity that may be useful in diagnosing brain conditions, especially epilepsy and other seizure disorders. This activity shows up as wavy lines on an EEG recording.

What could an abnormal EEG mean?

Abnormal results on an EEG test may be due to: Abnormal bleeding (hemorrhage) An abnormal structure in the brain (such as a brain tumor) Tissue death due to a blockage in blood flow (cerebral infarction) Drug or alcohol abuse.

What will an EEG tell you?

An electroencephalogram (EEG) is a noninvasive test that records electrical patterns in your brain. The test is used to help diagnose conditions such as seizures, epilepsy, head injuries, dizziness, headaches, brain tumors and sleeping problems. It can also be used to confirm brain death.

Can you have a false abnormal EEG?

The misdiagnosis of epilepsy is common and has very serious consequences. It is in fact a life-changing diagnosis. A major contributor to the misdiagnosis of epi- lepsy is the tendency to over-read normal tracings as abnormal. In fact, the wrong diagnosis of seizures is sometimes based solely on the ‘abnormal’ EEG.

What are possible results of an EEG?

EEG brain activity An EEG records the electrical activity of your brain via electrodes affixed to your scalp. EEG results show changes in brain activity that may be useful in diagnosing brain conditions, especially epilepsy and other seizure disorders .

What can EEG findings tell us?

The electroencephalogram (EEG) is a medical test used to measure the electrical activity of the brain. A number of electrodes are applied to your scalp. EEG can help diagnose a number of conditions including epilepsy Epilepsy A neurological disorder that causes seizures or unusual sensations and behaviors. , sleep disorders and brain tumours .

What is the normal result of EEG?

Normal results. Electrical activity in the brain appears in an EEG as a pattern of waves. Different levels of consciousness, like sleeping and waking, have a specific range of frequencies of waves per second that are considered normal. For example, the wave patterns move faster when you’re awake than when you’re asleep.

What should I expect with an EEG?

There are no risks associated with an EEG. The test is painless and safe. Some EEGs do not include lights or other stimuli. If an EEG does not produce any abnormalities, stimuli such as strobe lights, or rapid breathing may be added to help induce any abnormalities.