Beta wave

Beta wave

Beta wave, or beta rhythm, is the term used to designate the frequency range of brain activity above 12 Hz (12 transitions or cycles per second). Beta states are the states associated with normal waking consciousness. Low amplitude beta waves with multiple and varying frequencies are often associated with active, busy, or anxious thinking and active concentration. Rhythmic beta with a dominant set of frequencies is associated with various pathologies and drug effects. For instance, beta activity can be accentuated by sedative-hypnotic drugs such as benzodiazepines or barbiturates.Fact|date=October 2007 It can also be absent or reduced if the patient underwent cortical damage.

Beta Waves are also split into three sections: High Beta Waves (19Hz+); Beta Waves (15-18Hz); and Low Beta Waves (12-15Hz).

ee also

* Electroencephalography
* SMR
* Sensory Integration Dysfunction
* Holonomic brain theory
* Sleep
* Alpha wave
* Delta wave
* Gamma wave
* Theta wave


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  • beta wave — n. any of the electrical waves from the parietal frontal regions of the brain, having frequencies from 13 to 30 hertz: a sign of mental activity and alertness: also beta rhythm * * * …   Universalium

  • beta wave — n an electrical rhythm of the brain with a frequency of 13 to 30 cycles per second that is associated with normal conscious waking experience called also beta …   Medical dictionary

  • beta wave — n. any of the electrical waves from the parietal frontal regions of the brain, having frequencies from 13 to 30 hertz: a sign of mental activity and alertness: also beta rhythm …   English World dictionary

  • beta wave — noun the normal brainwave in the encephalogram of a person who is awake and alert; occurs with a frequency between 12 and 30 hertz • Syn: ↑beta rhythm • Hypernyms: ↑brainwave, ↑brain wave, ↑cortical potential * * * noun see beta rhythm …   Useful english dictionary

  • beta wave — /ˈbitə weɪv/ (say beetuh wayv) noun a periodic variation in the electrical potential of the normal cerebral cortex with a frequency about 18 to 30 hertz in the alert waking state. Compare alpha wave. Also, beta rhythm …  

  • beta wave — noun Date: 1936 an electrical rhythm of the brain with a frequency of 13 to 30 cycles per second that is associated with normal conscious waking experience called also beta, beta rhythm …   New Collegiate Dictionary

  • beta wave — noun An electrical signal produced by the brain while the subject mentally active. See Also: alpha wave, electroencephalography …   Wiktionary

  • beta rhythm — n BETA WAVE * * * a rhythm in the electroencephalogram consisting of waves smaller than those of the alpha rhythm, having an average frequency of 25 per second; see beta waves under wave. Called also beta activity …   Medical dictionary

  • beta — Second letter of the Greek alphabet, β (see entry at start of letter “B s.” [G.] * * * Biomedical Electronics Technicians Association * * * be·ta bāt ə, chiefly Brit bē tə n 1) the second letter of the Greek alphabet symbol ß or ß 2) BETA… …   Medical dictionary

  • beta rhythm — noun the normal brainwave in the encephalogram of a person who is awake and alert; occurs with a frequency between 12 and 30 hertz • Syn: ↑beta wave • Hypernyms: ↑brainwave, ↑brain wave, ↑cortical potential …   Useful english dictionary

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