Results 11 to 20 of about 269,647 (277)

Decision time, slow inhibition, and theta rhythm [PDF]

open access: yesThe Journal of Neuroscience, 2010
In this paper, we examine decision making in a spiking neuronal network and show that longer time constants for the inhibitory neurons can decrease the reaction times and produce theta rhythm.We analyze the mechanism and find that the spontaneous firing
Smerieri, Anteo   +5 more
core   +5 more sources

Nonlinear properties of the brain theta rhythm [PDF]

open access: yesИзвестия высших учебных заведений: Прикладная нелинейная динамика
The purpose of this study is to identify nonlinearity of local brain field potential signals during theta rhythm. Methods. The nonlinearity in the signal is manifested in the synchronous behavior of the fundamental frequency and its higher harmonics; to
Dolinina, Anastasiya Yuryevna   +4 more
doaj   +3 more sources

Young infants process prediction errors at the theta rhythm [PDF]

open access: yesNeuroImage, 2021
Examining how young infants respond to unexpected events is key to our understanding of their emerging concepts about the world around them. From a predictive processing perspective, it is intriguing to investigate how the infant brain responds to ...
Moritz Köster   +3 more
doaj   +2 more sources

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

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

open access: yesPLoS 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   +3 more
doaj   +1 more source

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

open access: yesBiophysica, 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]

open access: yes, 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.   +7 more
core   +1 more source

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

open access: yes, 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   +19 more
core   +2 more sources

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

open access: yes, 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   +17 more
core   +4 more sources

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