EEG Terminology Questions And Answers

Process - graphy Instrument - graph Record - Gram EEG-Electroencephalography - The process of amplification, recordings, and analysis of the electrical protentials of the brain Electroencephalogram - EEG recording itself. It can be printed or stored on digital media as a file Electroencephalograph - The instrument used to amplify and record the electrical potentials of the brain Electrocorticography - The recording of electrical activity directly to the surface of the cerebral cortex either during surgery or post surgery using implanted electrodes ND-Neurodiagnostics - Umbrella term that refers to all types of neurophysiologic testing and monitoring. Included in ND are EEG, EP(Evoke Potentials), PSG(Polysomnography), NCS (Nerve conduction Studies), ERG (Electroretinography), LTM (Long term monitoring for epilepsy and long term monitoring in the ICU or IONM ( Intraoperative Neurophysiological Monitoring) EEG- Electroencephalography - Abbreviation "EEG" can refer to the instrument, the process, or the recording. Also can refer to the department though END is usally a better term for the hospital department where EEGs are performed, since there are usually other procedures being performed in the department. Lead - A single electrode placement on the scalp or other recording area. Also used to describe the electrode itself. Montage - An organized combination of electrode derivations recording at the same time on the electroenphalograph Derivation - One set of 2 electrodes, placed into Grid 1 and Grid 2 (the 2 inputs) of one channel of the electroencephalograph Input 1 and Input 2 AKA: Grid 1 and Grid 2 - These are the 2 inputs for each channel that record the electrical potential into the differntial amplifier of an electroencephalograph Dipole - Having two equal and opposite magnetized or electrically charged poles that are seperated by a short distanc