Definitions for theta rhythm
theta rhythm

Princeton's WordNetRate this definition:0.0 / 0 votes

1. theta rhythm, theta wavenoun

   the normal brainwave in the encephalogram of a person who is awake but relaxed and drowsy; occurs with low frequency and low amplitude

WiktionaryRate this definition:0.0 / 0 votes

1. theta rhythmnoun

   A type of electrical activity in the brain, brain waves with a frequency 4-8 hertz.

2. Etymology: theta + rhythm

ChatGPTRate this definition:0.0 / 0 votes

1. theta rhythm

   Theta rhythm refers to a pattern of brain waves often associated with a state of wakeful relaxation or light sleep. It involves a frequency range of about 4–7 Hz and is typically characterized by its oscillating, wave-like pattern. Theta rhythm is mainly observed in the hippocampus and has been associated with memory formation, navigation, and sensation.

WikidataRate this definition:0.0 / 0 votes

1. Theta rhythm

   The theta rhythm is an oscillatory pattern in EEG signals recorded either from inside the brain or from electrodes glued to the scalp. Two types of theta rhythm have been described. The "hippocampal theta rhythm" is a strong oscillation that can be observed in the hippocampus and other brain structures in numerous species of mammals including rodents, rabbits, dogs, cats, bats, and marsupials. "Cortical theta rhythms" are low-frequency components of scalp EEG, usually recorded from humans. In rats, the most frequently studied species, theta rhythmicity is easily observed in the hippocampus, but can also be detected in numerous other cortical and subcortical brain structures. Hippocampal theta, with a frequency range of 6–10 Hz, appears when a rat is engaged in active motor behavior such as walking or exploratory sniffing, and also during REM sleep. Theta waves with a lower frequency range, usually around 6–7 Hz, are sometimes observed when a rat is motionless but alert. When a rat is eating, grooming, or sleeping, the hippocampal EEG usually shows a non-rhythmic pattern known as Large Irregular Activity or LIA. The hippocampal theta rhythm depends critically on projections from the medial septal area, which in turn receives input from the hypothalamus and several brainstem areas. Hippocampal theta rhythms in other species differ in some respects from those in rats. In cats and rabbits, the frequency range is lower, and theta is less strongly associated with movement than in rats. In bats, theta appears in short bursts associated with echolocation. In humans and other primates, hippocampal theta is difficult to observe at all.

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. Theta Rhythm

   One of four types of brain waves, characterized by a frequency of 4-7 Hz, usually observed in the temporal lobes when the individual is awake, but relaxed and sleepy.

Matched Categories

1. • Brainwave

How to pronounce theta rhythm?

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Numerology

1. Chaldean Numerology

   The numerical value of theta rhythm in Chaldean Numerology is: 4

2. Pythagorean Numerology

   The numerical value of theta rhythm in Pythagorean Numerology is: 2

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=theta rhythm
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Theta_Rhythm
3. ^ ChatGPT
   https://chat.openai.com
4. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=theta rhythm