theta wave


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Related to theta wave: beta waves

theta wave

n.
1. An electrical oscillation occurring in the human brain at a frequency of about 4 to 8 hertz or less as recorded on an electroencephalogram, possibly associated with memory and navigation.
2. A similar brain wave occurring in rodents chiefly in the hippocampus, having a frequency range of about 4 to 10 hertz and associated with a state of alert arousal. In both senses also called theta rhythm.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.theta wave - the normal brainwave in the encephalogram of a person who is awake but relaxed and drowsy; occurs with low frequency and low amplitude
brain wave, brainwave, cortical potential - (neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectable with an electroencephalograph
References in periodicals archive ?
It spiked when I got up for the nocturnal tinkles that we over 50s now treat as an extreme sport - only going into a deep theta wave state about ten minutes before I awoke.
Epstein's method, before they begin their imagery exercise, I guide them into a meditative state which puts their brain in the alpha or theta wave. At these lower brain frequencies, they are in effect in an altered state of consciousness or very light trance.
This includes hundreds of specific "Channels" - Delta Wave Channel, Theta Wave Channel etc..
Baseline EEG showed beta wave, and EEG wave during examination stress showed theta wave. This difference in frequency was statistically significant.
For all the phases of [f.sub.1], [f.sub.2], and [f.sub.3], Alpha waves ([B.sub.1]) are decreased significantly and transferred into Theta wave ([B.sub.3]) and Delta wave ([B.sub.4]) standing for the slights sleeping status.
Others to follow Bath 3.10 Theta Wave, 3.40 Milldown Story, 4.40 Piazza San Pietro, 5.10 Lucy's Perfect.
FOLKESTONE: 5.20 Ta Aleem, 5.50 Golden Games, 6.20 Yarra River, 6.50 Hi Shinko, 7.20 Theta Wave, 7.50 Step It Up.
NAOMI MATTHEW: 5.20 Ta Aleem, 5.50 Rough Sketch, 6.20 Yarra River, 6.50 Hi Shinko, 7.20 Theta Wave, 7.50 Step It Up.
FOLKESTONE: 5.20 Ta Aleem, 5.50 Rough Sketch, 6.20 Yarra River, 6.50 Hi Shinko, 7.20 Theta Wave, 7.50 Step It Up.
As activity levels at resting conditions are low, greater increases in delta and theta wave activity can be achieved during mental work, corresponding to better performance.
A considerable decrease in delta and theta wave activity was observed, particularly in brain regions closely connected to cognitive performance.