EEG Testing
EEG Testing
What is an Electroencephalogram (EEG)?
An electroencephalogram (EEG) is a test that measures electrical activity in the brain. This test also is called an EEG. The test uses small metal discs called electrodes that attach to the scalp. Brain cells communicate via electrical impulses, and this activity shows up as wavy lines on an EEG recording. Brain cells are active all the time, even during sleep.
This test is primarily done as a sleep deprived study but sleep deprivation may not be required in some cases.
An electroencephalogram (EEG) is a test that measures electrical activity in the brain. This test also is called an EEG. The test uses small metal discs called electrodes that attach to the scalp. Brain cells communicate via electrical impulses, and this activity shows up as wavy lines on an EEG recording. Brain cells are active all the time, even during sleep.
This test is primarily done as a sleep deprived study but sleep deprivation may not be required in some cases.
- Help understand age-appropriate cognitive functioning
- Establish a baseline to track cognitive functioning in the future
- Help clarify what might cause cognitive problems
- Help clarify a treatment path if applicable
- signal transmission.
- Motor neurons transmit electrical signals that cause muscles to contract. An EMG uses tiny devices called electrodes to translate these signals into graphs, sounds or numerical values that are then interpreted by a specialist.
- During a needle EMG, a needle electrode inserted directly into a muscle records the electrical activity in that muscle.
- A nerve conduction study, another part of an EMG, uses electrode stickers applied to the skin (surface electrodes) to measure the speed and strength of signals traveling between two or more points.