electroencephalograms
Cranial electrical recordings
Electroencephalograms are recordings of electrical activity in the brain, produced by attaching electrodes to the scalp.
The resulting readout shows brain waves as wavy lines, useful for diagnosing epilepsy, sleep disorders, and other neurological conditions.
Often abbreviated EEG, which refers to both the test and its output: The EEG showed abnormal activity.
Electrical signals from neurons
- epilepsyBrain disorder causing seizures
- seizuresInvoluntary convulsions or takings
- abnormalitiesDeviations from standard patterns
- diagnosisIdentification of illness
neurologist · sleep disorders · encephalopathy · coma · brain death · dementia · concussion · stroke
Electrical contact points
- scalpSkin covering skull
- channelsPaths for transmission
- montageAssembled sequence of images
- amplifierSignal-strengthening electronic device
frequency · amplitude · voltage · hertz · bandwidth · filters · artifact · impedance
Study of nervous systems
- cognitionMental knowledge acquisition
- brain mappingCharting neural structures
- attentionFocused mental awareness
- memoryMind's retention capacity
sleep stages · REM · biofeedback · neurofeedback · quantitative · spectral analysis · coherence · connectivity
First Greek letter
- betaGreek alphabet's second letter
- thetaEighth Hellenic letter
- deltaSymbol denoting variation
- gammaGreek alphabet's third
spindles · spikes · rhythms · synchrony · desynchronization · triphasic · periodic · focal
Skilled practical worker
- laboratoryFacility for scientific investigation
- outpatientTreated without admission
- inpatientAdmitted overnight patient
- ambulatoryAble to walk
telemetry · ICU · bedside · referral · insurance · report · neurophysiologist · reading
brainwaves
Electrical signals from neurons
- epilepsyBrain disorder causing seizures
- seizuresInvoluntary convulsions or takings
- abnormalitiesDeviations from standard patterns
diagnosis · neurologist · sleep disorders · encephalopathy · coma · brain death · dementia · concussion · stroke · tumors
electrodes
Electrical contact points
amplifier · frequency · amplitude · voltage · hertz · bandwidth · filters · artifact · impedance · calibration
neuroscience
Study of nervous systems
- cognitionMental knowledge acquisition
- brain mappingCharting neural structures
- attentionFocused mental awareness
memory · sleep stages · REM · biofeedback · neurofeedback · quantitative · spectral analysis · coherence · connectivity · plasticity
alpha
First Greek letter
gamma · spindles · spikes · rhythms · synchrony · desynchronization · triphasic · periodic · focal · generalized
technician
Skilled practical worker
- laboratoryFacility for scientific investigation
- outpatientTreated without admission
- inpatientAdmitted overnight patient
ambulatory · telemetry · ICU · bedside · referral · insurance · report · neurophysiologist · reading · routine