Results 41 to 50 of about 53,282 (289)

Cross-frequency phase-amplitude coupling as a mechanism for temporal orienting of attention in childhood [PDF]

open access: yes, 2018
Temporal orienting of attention operates by biasing the allocation of cognitive and motor resources in specific moments in time, resulting in the improved processing of information from expected compared with unexpected targets.
Astle, Duncan E.   +2 more
core   +1 more source

Enhancement of encoding and retrieval functions through theta phase-specific manipulation of hippocampus

open access: yeseLife, 2014
Assessing the behavioral relevance of the hippocampal theta rhythm has proven difficult, due to a shortage of experiments that selectively manipulate phase-specific information processing.
Joshua H Siegle, Matthew A Wilson
doaj   +1 more source

Computational study of hippocampal-septal theta rhythm changes due to β-amyloid-altered ionic channels. [PDF]

open access: yesPLoS ONE, 2011
Electroencephagraphy (EEG) of many dementia patients has been characterized by an increase in low frequency field potential oscillations. One of the characteristics of early stage Alzheimer's disease (AD) is an increase in theta band power (4-7 Hz ...
Xin Zou   +3 more
doaj   +1 more source

Making Waves in the Brain: What Are Oscillations, and Why Modulating Them Makes Sense for Brain Injury. [PDF]

open access: yes, 2016
Traumatic brain injury (TBI) can result in persistent cognitive, behavioral and emotional deficits. However, the vast majority of patients are not chronically hospitalized; rather they have to manage their disabilities once they are discharged to home ...
Gurkoff, Gene G   +4 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 ...
A Mazzoni   +44 more
core   +4 more sources

Volume conduction and EEG measurements within the brain: A quantitative approach to the influence of electrical spread on the linear relationship of activity measured at different locations [PDF]

open access: yes, 1977
When recording referentially brain field potentials with several electrodes at relatively small tip separations, a linear relationship between the simultaneously recorded signals may arise solely as a result of volume conduction (electrical spread).
Feenstra, B.W.A., Holsheimer, J.
core   +3 more sources

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

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   +1 more source

Efficacy of Intermittent Theta‐Burst Stimulation for Prolonged Disorders of Consciousness: A Prospective, Randomized, Controlled Trial

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Emerging evidence suggests that low‐frequency neural oscillations are dynamically regulated by consciousness levels, with the recovery of low cortical activity potentially serving as a neurophysiological substrate for conscious emergence. Targeted enhancement of these low‐frequency rhythms in patients with disorders of consciousness
Chuan Xu   +10 more
wiley   +1 more source

EEG cortical network reveals the temporo-spatial mechanism of visual search

open access: yesBrain Research Bulletin, 2023
This study aims to explore a method based on brain networks for implicit attention by using wavelet coherence as feature to identify individual targets in the visual field, find the optimal classification rhythm and time window, and investigate the ...
Rui Qiao, Haiyong Zhang, Yin Tian
doaj   +1 more source

Modeling rhythmic patterns in the hippocampus

open access: yes, 2012
We investigate different dynamical regimes of neuronal network in the CA3 area of the hippocampus. The proposed neuronal circuit includes two fast- and two slowly-spiking cells which are interconnected by means of dynamical synapses.
A. I. Lavrova   +7 more
core   +1 more source

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