Electroencephalogram (EEG)

Definition

An Electroencephalogram (EEG) is a diagnostic test that measures and records the electrical activity of the brain using electrodes attached to the scalp. It is commonly used to diagnose epilepsy and other neurological conditions.

5 Must Know Facts For Your Next Test

1. EEG is essential for diagnosing epilepsy, as it can detect abnormal electrical activity associated with seizures.
2. Different types of EEG patterns help classify various forms of epilepsy, which can guide appropriate treatment plans.
3. Anticonvulsant drugs may alter EEG readings by reducing the frequency or intensity of epileptic spikes and waves.
4. EEGs are often conducted during sleep or after sleep deprivation to increase the likelihood of detecting abnormalities in patients suspected of having epilepsy.
5. Routine EEGs typically last about 20-30 minutes, while extended monitoring may be necessary for capturing infrequent seizure activity.

Review Questions

• How does an Electroencephalogram (EEG) assist in diagnosing epilepsy?
• What impact do anticonvulsant drugs have on EEG readings?
• Why might an EEG be performed after sleep deprivation?

Related terms

Seizure: A sudden, uncontrolled electrical disturbance in the brain that can cause changes in behavior, movements, feelings, or consciousness.

Anticonvulsant Drugs: Medications used to prevent or reduce the frequency and severity of seizures in individuals with epilepsy.

Neurology: The branch of medicine dealing with disorders of the nervous system, including the brain, spinal cord, nerves, and muscles.