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Definition of the noun alpha rhythm
What does alpha rhythm mean as a name of something?
- the normal brainwave in the electroencephalogram of a person who is awake but relaxed; occurs with a frequency of 8-12 hertz
Printed dictionaries and other books with definitions for Alpha Rhythm
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The Dictionary of Psychology (2016)
by Ray Corsini
alpha rhythm/waves (H. Berger) The most frequently observed impulses or waves seen on an electroencephalogram when a person is awake and relaxed. The waves are large and slow and occur 8 to 12 Hertz (cycles per second) but ...
Human Services Dictionary (2012)
by Howard Rosenthal
alpha rhythm/alpha waves A biofeedback termused todescribe brain wave frequencies of8 to12 cycles per second(cps) or8 to 12 Hertz (Hz).
The normal waking alpha rhythm usually has larger amplitudes over posterior regions, but is typically recorded over widespread scalp regions. Posterior alpha amplitude in most normal adults lies in the range of 15-50 mV; alpha amplitudes ...
by Irving B. Weiner, W. Edward Craighead
The classical alpha rhythm is prominent at electrodes overlying the occipital ( visual) cortex and to a lesser extent over the posterior temporal and parietal areas. Alpha rhythm occurs in a condition of relaxed wakefulness with eyes closed.
by W. Edward Craighead, Charles B. Nemeroff
The classical alpha rhythm is prominent at electrodes overlying the occipital ( visual) cortex and to a lesser extent over the posterior temporal and parietal areas. Alpha rhythm occurs in a condition of relaxed wakefulness with eyes closed, and it ...
by Stuart Sutherland
alpha rhythm ...
by Robert Jean Campbell
The alpha rhythm is the standby mode of the brain; ...
by Charles Pollak, Michael J. Thorpy, Jan Yager
(See also ALPHA RHYTHM.) alpha-delta activity Term describing the presence of the alpha EEG rhythm, which occurs simultaneously with the slower delta EEG pattern of sleep. Alpha-delta activity is typically seen in disorders that disrupt ...
by Houghton Mifflin Company, American Heritage
alpha rhythm n. A pattern of smooth, regular electrical oscillations, as recorded by an electroencephalograph, that occur in the human brain when a person is awake and relaxed. alpha-sy"nuscle-in ...
Encyclopedia of Neuroscience (2009)
Volume One by Larry R. Squire
More commonly, however, the delivery of stimuli in event-related experiments is not dependent on the occurrence of any EEG feature in particular, and even at posterior scalp electrodes, the alpha rhythm may or may not be observable in ...
A Concise and Up-to-date Guide to Medical Terms by Houghton Mifflin Company
alpha rhythm n. A pattern of smooth, regulat electrical oscillations, as recorded by an electroen- cephalograph, that occur in the ...
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