The function of the hippocampal theta rhythm is not clearly understood.

The most popular theories, however, link the theta rhythm to mechanisms of learning and memory.

The synchronous theta rhythm ranges from 4 to 7 Hz.

Two types of theta rhythm have been described.

A large body of evidence indicates that theta rhythm is likely involved in spatial learning and navigation (Buzsáki, 2005).

Colours swirled, ebbing and flowing to the theta rhythms of hypnagogic sleep.

This EEG pattern is known as a theta rhythm.

It has not been established that septal lesions exert their effects specifically by eliminating the theta rhythm.

A study reported subjects with Aspergers showed more theta rhythms, "and they were not localized in the AS group".

Hippocampal theta rhythms in other species differ in some respects from those in rats.

What is meant here is that theta rhythms may affect those aspects of learning and memory which are dependent upon synaptic plasticity.

The result is a frequency that corresponds to the so-called theta rhythm, a brain wave that some scientists believe is involved in learning.

"There's a magic rhythm, the theta rhythm - the natural, indigenous rhythm of the hippocampus."

In animals the indication of SA is a high-amplitude and well-organized hippocampal theta rhythm.

A major research problem has been to discover the "pacemaker" for the theta rhythm, that is, the mechanism that determines the oscillation frequency.

For example, The theta rhythm drives the spatially extended place cells in the hippocampus to generate a code giving information about spatial location.

These IPSPs also regulate theta rhythms in pyramidal cells.

The EEG reveals information about a theta rhythm signature that occurs when people with the Ability attempt to control others.

"Cortical theta rhythms" are low-frequency components of scalp EEG, usually recorded from humans.

Cortical theta rhythms observed in human scalp EEG are a different phenomenon, with no clear relationship to the hippocampus.

Thus the rat hippocampal EEG oscillation should not, strictly speaking, have been called a "theta rhythm".

Differential shaping of EEG theta rhythms.

A significant part of Prof. Vinogradova's scientific career was devoted to the analysis of the role of theta rhythm in hippocampal function.

When a rat explores its surroundings, storing information, electromagnetic waves of a certain frequency (called the theta rhythm) emanate from its hippocampus.

Theta rhythms are found in the hippocampus and GABAergic synaptic inhibition helps to modulate them.