Electroencephalography

Electroencephalography (EEG) is a method to record an electrogram of the spontaneous electrical activity of the brain. The bio signals detected by EEG have been shown to represent the postsynaptic potentials of pyramidal neurons in the neocortex and allocortex. It is typically non-invasive, with the EEG electrodes placed along the scalp (commonly called "scalp EEG") using the International 10–20 system, or variations of it. Electrocorticography, involving surgical placement of electrodes, is sometimes called "intracranial EEG". EEG is widely used both as a clinical diagnostic tool, particularl

term in acoustics

neural oscillation in the frequency range of 8–12 Hz

thumb|470x470px|Neurofeedback training process diagram

a neural oscillation in the brain with a frequency range of between 12.5 and 30 Hz

high amplitude brain wave, whose frequency lies between 0.5 and 4 hertz

pattern of neural oscillation in humans with a frequency between 25 and 140 Hz

brain response that is the direct result of a specific sensory, cognitive, or motor event

3rd and 4th sleep stage

electrical potential evoked in the nervous system

EEG waveform that occurs during sleep

component in a sequence of stimuli

neural oscillatory pattern

Synchronized patterns of electrical activity in the part of the brain that controls voluntary movement

event-related potential

Component of time-locked EEG sign

thumb|right|350px A K-complex is a waveform that may be seen on an electroencephalogram (EEG). It occurs during stage 2 NREM sleep. It is the "largest event in healthy human EEG". They are more frequent in the first sleep cycles.

method to describe and apply the location of scalp electrodes

In neurology, the Bereitschaftspotential or BP (German for "readiness potential"), also called the pre-motor potential or readiness potential (RP), is a measure of activity in the motor cortex and supplementary motor area of the brain leading up to voluntary muscle movement. The BP is a manifestation of cortical contribution to the pre-motor planning of volitional movement. It was first recorded and reported in 1964 by Hans Helmut Kornhuber and Lüder Deecke at the University of Freiburg in Germany. In 1965 the full publication appeared after many control experiments.

use of electrophysiological methods

Hypsarrhythmia is very chaotic and disorganized brain electrical activity with no recognizable pattern, whereas a normal brain electrical activity shows clear separation between each signal and visible pattern. It is an abnormal interictal pattern, consisting of high amplitude and irregular waves and spikes in a background of chaotic and disorganized activity seen on electroencephalogram (EEG), and frequently encountered in infants diagnosed with infantile spasms, although it can be found in other conditions such as tuberous sclerosis.

numerical analysis of EEG data

electrophysiological assessment of auditory system synchrony

Stereoelectroencephalography (SEEG) is the practice of recording electroencephalographic signals via depth electrodes (electrodes surgically implanted into the brain tissue). It may be used in patients with epilepsy not responding to medical treatment, and who are potential candidates to receive brain surgery in order to control seizures.

hypothetical neural stimulation for altering states of consciousness

altered state of consciousness after an epileptic seizure

oscillatory idle rhythm of synchronized electric brain activity

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brain responses phase-locked to periodic visual stimulation