Neurodiagnostics Glossary

Real-time neurophysiological assessment during surgery to detect and prevent neural damage.

Variability in the time interval between two muscle fiber action potentials from the same motor unit, measured in single...

Large amplitude, biphasic EEG transients characteristic of stage 2 non-REM sleep.

Normal EEG transients occurring over occipital regions during visual scanning, resembling the Greek letter lambda.

Delayed muscle responses following nerve stimulation, including H-reflexes and F-waves.

Non-invasive neuroimaging technique that measures magnetic fields produced by electrical activity in the brain.

An electrophysiological test of trigeminal nerve function by stimulating the mental nerve.

Technique using extremely fine electrodes to record electrical activity from individual neurons or small groups of cells...

The specific arrangement and configuration of electrode pairs used in EEG recording and display.

A technique for estimating the number of functioning motor units in a muscle.

A normal EEG rhythm of 8-13 Hz over central regions that blocks with contralateral hand movement, generated by sensorimo...

The insertional component of electromyography using needle electrodes to assess muscle activity.

A test measuring the speed and strength of electrical signals traveling through peripheral nerves.

A neurodiagnostic technique that tracks changes in brain electrical patterns over time to assess neural adaptation and r...

A quantitative measure from polysomnographic studies expressing the number of periodic limb movements per hour of sleep,...

EEG pattern where a signal changes polarity across adjacent electrodes, indicating the location of electrical activity.

A standard EEG activation procedure using flashing lights to provoke abnormal brain electrical activity.

An abnormal EEG reaction to flashing light stimulation, characterized by epileptiform discharges.

Periodic lateralized epileptiform discharges appearing as repetitive sharp waves or spikes over one hemisphere, indicati...

A comprehensive sleep study that records multiple physiological parameters during sleep.

The altered state of consciousness following a seizure, characterized by confusion, fatigue, and temporary neurological...

The period preceding a seizure, often marked by subtle behavioral or electrographic changes.

Measurement of conduction time in the terminal portion of the pudendal nerve.

Computer-based statistical analysis of EEG data that provides objective measurements of brain electrical activity compar...