alpha rhythm

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Related to alpha rhythm: beta rhythm

alpha rhythm

alpha wave

(Physiology) physiol the normal bursts of electrical activity from the cerebral cortex of a drowsy or inactive person, occurring at a frequency of 8 to 12 hertz and detectable with an electroencephalograph. See also brain wave

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

al′pha rhythm`

a pattern of slow brain waves (al′pha waves`) in normal persons at rest with closed eyes, thought by some to be associated with an alert but daydreaming mind.

[1935–40]

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Noun

alpha rhythm - the normal brainwave in the electroencephalogram of a person who is awake but relaxed; occurs with a frequency of 8-12 hertz

alpha wave

brain wave, brainwave, cortical potential - (neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectable with an electroencephalograph

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Specifically, the researchers tracked the alpha rhythm in the brain, which occurs at between 8 and 13 Hertz and is a measure of whether the brain is being engaged or is in a resting or "autopilot" mode.

Humans Sense Earth's Magnetic Fields

Conventionally, cortical alpha rhythm is associated with low information processing.

Effect of alpha and gamma binaural beats on reaction time and short-term memory

For our analysis, DTF was computed for the networks formed at the frequency bands of alpha rhythm at 8-12 Hz ("alpha networks") and beta rhythm at 13-30 Hz ("beta networks"), as those are considered the brainwaves most relevant to the sensorimotor processes [73].

Functional Brain Connectivity during Multiple Motor Imagery Tasks in Spinal Cord Injury

Spontaneous slow fluctuation of EEG alpha rhythm reflects activity in deep-brain structures: A simultaneous EEG-fMRI study.

Detection of electroencephalographic, electromyographic, and cardiac variations during wake-sleep transition through change point analysis

The results correlate with the explanation of loss of normal alpha rhythm and prominence of delta rhythm during encephalopathy.

Diagnosis of Encephalopathy Based on Energies of EEG Subbands Using Discrete Wavelet Transform and Support Vector Machine

It was rhythmic with an 8-9-Hz alpha rhythm, and no abnormalities were found.

A rare reflex epilepsy: Bathing-related epilepsy

This is the target for the detection of alpha waves by EEG, which normally occur in awake humans with closed eyes, and in a case of a distress the activity of the alpha rhythm fades away.

Multifunctional neurodevice for recognition of electrophysiological signals and data transmission in an exoskeleton construction

Jennifer then starts to ask questions about her and Marty's future self, but the Doc thought this to be a bad idea and activates a "Sleep-inducing Alpha Rhythm Generator", a hand-held electronic gadget that emitted light which instantaneously put Jennifer to sleep.

A look back to the future

The alpha rhythm only differed significantly between the IR90 and the control groups.

Long-term correlation of the electrocorticogram as a bioindicator of brain exposure to ionizing radiation

for alpha rhythm generation [1] and redesigned by Jansen and Rit to represent the generation of evoked potentials in the visual cortex [2].