Results 21 to 30 of about 19,334 (183)

Ablation of p75NTR signaling strengthens gamma–theta rhythm interaction and counteracts Aβ-induced degradation of neuronal dynamics in mouse hippocampus in vitro [PDF]

open access: yesTranslational Psychiatry, 2021
Gamma and theta brain rhythms play important roles in cognition and their interaction can affect gamma oscillation features. Hippocampal theta oscillations depend on cholinergic and GABAergic input from the medial septum-diagonal band of Broca.
Yuniesky Andrade-Talavera   +5 more
doaj   +2 more sources

An integrative model of the intrinsic hippocampal theta rhythm. [PDF]

open access: yesPLoS One, 2017
Hippocampal theta oscillations (4-12 Hz) are consistently recorded during memory tasks and spatial navigation. Despite several known circuits and structures that generate hippocampal theta locally in vitro, none of them were found to be critical in vivo, and the hippocampal theta rhythm is severely attenuated by disruption of external input from medial
Hummos A, Nair SS.
europepmc   +5 more sources

The modulation of hippocampal theta rhythm by the vestibular system [PDF]

open access: yesJournal of Neurophysiology, 2018
The vestibular system is a sensory system that has evolved over millions of years to detect acceleration of the head, both rotational and translational, in three dimensions. One of its most important functions is to stabilize gaze during unexpected head movement; however, it is also important in the control of posture and autonomic reflexes.
Phillip, Aitken   +2 more
openaire   +3 more sources

Neural tracking at theta predicts drumming-induced altered states of consciousness [PDF]

open access: yesScientific Reports
Altered states of consciousness (ASC) involve shifts in perception, cognition, and awareness, offering a unique lens on the nature of consciousness. Across cultures, rhythmic drumming in the theta range (4–7 Hz) is often used to induce such states, but ...
Yoel Gordon   +3 more
doaj   +2 more sources

Movement-related theta rhythm in humans: coordinating self-directed hippocampal learning. [PDF]

open access: yesPLoS Biology, 2012
The hippocampus is crucial for episodic or declarative memory and the theta rhythm has been implicated in mnemonic processing, but the functional contribution of theta to memory remains the subject of intense speculation.
Raphael Kaplan   +6 more
doaj   +2 more sources

Perceptual Temporal Structure Supports Rhythm Learning and Enhances Theta Oscillations When Perception and Action Are Dissociated [PDF]

open access: yesBrain Sciences
Background: Rhythmic knowledge enables the precise timing of actions in dynamic environments. Although rhythm learning has been extensively studied, it remains debated whether such learning arises primarily from the perceptual encoding of rhythmic inputs
Xue Weng   +5 more
doaj   +2 more sources

Phase-locked closed-loop ultrasound stimulation modulates theta and gamma rhythms in the mouse hippocampus

open access: yesFrontiers in Neuroscience, 2022
Previous studies have demonstrated that open-loop transcranial ultrasound stimulation (TUS) can modulate theta and gamma rhythms of the local field potentials (LFPs) in the mouse hippocampus; however, the manner in which closed-loop TUS with different ...
Zhenyu Xie   +7 more
doaj   +1 more source

Hippocampal theta modulation of neocortical spike times and gamma rhythm: a biophysical model study. [PDF]

open access: yesPLoS ONE, 2012
The hippocampal theta and neocortical gamma rhythms are two prominent examples of oscillatory neuronal activity. The hippocampus has often been hypothesized to influence neocortical networks by its theta rhythm, and, recently, evidence for such a direct ...
Eelke Spaak   +2 more
doaj   +1 more source

Older rats show slow modulation of hippocampal theta rhythm during voluntary running

open access: yesExperimental Gerontology, 2023
Aging causes brain function degeneration and slows many motor and behavioural responses. The hippocampal theta rhythm (4–12 Hz) is related to cognition and locomotion.
Cheryl C.H. Yang   +5 more
doaj   +1 more source

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