Results 31 to 40 of about 19,334 (183)

Artificial theta stimulation impairs encoding of contextual fear memory. [PDF]

PLoS ONE, 2012
Several experiments have demonstrated an intimate relationship between hippocampal theta rhythm (4-12 Hz) and memory. Lesioning the medial septum or fimbria-fornix, a fiber track connecting the hippocampus and the medial septum, abolishes the theta ...
Arto Lipponen, Bisrat T Woldemichael, Kestutis Gurevicius, Heikki Tanila   +3 more
doaj   +1 more source

Does Proprioception Involve Synchronization with Theta Rhythms by a Novel Piezo2 Initiated Ultrafast VGLUT2 Signaling?

Biophysica, 2023
This opinion manuscript outlines how the hippocampal theta rhythm could receive two novel peripheral inputs. One of the ways this could be achieved is through Piezo2 channels and atypical hippocampal-like metabotropic glutamate receptors coupled to ...
Balázs Sonkodi
doaj   +1 more source

Analysis of theta power in hippocampal EEG during bar pressing and running behavior in rats during distinct behavioral contexts [PDF]

, 2004
These experiments examine changes in theta power as measured by wavelet analysis in five rats performing a conditional visual discrimination task and a simple running task. In the conditional task, rats were trained to press one lever to initiate a trial
Hyman, James M., Rossi, Christina A., James M. Hyman, Hasselmo, Michael E., Bradley P. Wyble, Wyble, Brad, Michael E. Hasselmo, Christina A. Rossi   +7 more
core   +1 more source

A computational study on altered theta-gamma coupling during learning and phase coding [PDF]

, 2012
There is considerable interest in the role of coupling between theta and gamma oscillations in the brain in the context of learning and memory. Here we have used a neural network model which is capable of producing coupling of theta phase to gamma ...
Yang Zhan, Haifu Zhou (157350), Zhang Xuejuan, Kendrick Keith M., Zhan Yang, Kendrick, Keith M., Xuejuan Zhang, Zhang, Xuejuan, Zhou Haifu, Jianfeng Feng (48703), Xuejuan Zhang (157336), Zhan, Yang, Keith M. Kendrick (157342), Zhou, Haifu, Haifu Zhou, Yang Zhan (157356), Feng, Jianfeng, Jianfeng Feng, Keith M Kendrick, Feng Jianfeng   +19 more
core   +1 more source

Learning alters theta amplitude, theta-gamma coupling and neuronal synchronization in inferotemporal cortex [PDF]

, 2011
Background: How oscillatory brain rhythms alone, or in combination, influence cortical information processing to support learning has yet to be fully established.
Zhang Xuejuan, Yang Zhan, Zhan Yang, Nicol, Alister U., Fischer Hanno, Kendrick, Keith M., Xuejuan Zhang, Zhang, Xuejuan, Hanno Fischer, Nicol Alister U, Fischer, Hanno, Zhan, Yang, Alister U Nicol, Feng, Jianfeng, Jianfeng Feng, Keith M Kendrick, Kendrick Keith M, Feng Jianfeng   +17 more
core   +1 more source

Increased mesiotemporal delta activity characterizes virtual navigation in humans [PDF]

, 2013
Hippocampal theta or rhythmic slow activity (RSA) occurring during exploratory behaviors and rapid-eye-movement (REM) sleep is a characteristic and well-identifiable oscillatory rhythm in animals.
Janszky, József, Halász, Péter, Rásonyi, György, Erőss, Loránd, Fabó, Dániel, Weiss, Béla, Kelemen, Anna, Clemens, Zsófia, Szűcs, Anna, Borbély, Csaba   +9 more
core   +1 more source

Interneuronal mechanisms of hippocampal theta oscillations in a full-scale model of the rodent CA1 circuit

eLife, 2016
The hippocampal theta rhythm plays important roles in information processing; however, the mechanisms of its generation are not well understood. We developed a data-driven, supercomputer-based, full-scale (1:1) model of the rodent CA1 area and studied ...
Marianne J Bezaire, Ivan Raikov, Kelly Burk, Dhrumil Vyas, Ivan Soltesz   +4 more
doaj   +1 more source

Single-Trial Phase Precession in the Hippocampus [PDF]

, 2009
During the crossing of the place field of a pyramidal cell in the rat hippocampus, the firing phase of the cell decreases with respect to the local theta rhythm.
Schmidt, Robert C., Schmitz, Dietmar, Schmidt, R., Buzsaki, G., Buzsáki, György, Diba, Kamran, Leibold, Christian, Kempter, Richard, Leibold, C., Kempter, R., Schmitz, D., Diba, K.   +11 more
core   +1 more source

Validating the efficacy of neurofeedback for optimising performance. [PDF]

, 2006
The field of neurofeedback training has largely proceeded without validation. Here we review our studies directed at validating SMR, beta and alpha–theta protocols for improving attention, memory, mood and music and dance performance in healthy ...
Vernon, D., David Vernon, Tobias Egner, Gruzelier, John, Egner, T., Gruzelier, J., John Gruzelier   +6 more
core   +1 more source

Long-term plasticity is proportional to theta-activity. [PDF]

PLoS ONE, 2009
BACKGROUND:Theta rhythm in the hippocampal formation is a main feature of exploratory behaviour and is believed to enable the encoding of new spatial information and the modification of synaptic weights.
Marian Tsanov, Denise Manahan-Vaughan
doaj   +1 more source