Results 41 to 50 of about 1,658,183 (243)

Posterior Beta and Anterior Gamma Oscillations Predict Cognitive Insight [PDF]

open access: yes, 2009
Pioneering neuroimaging studies on insight have revealed neural correlates of the emotional “Aha!” component of the insight process, but neural substrates of the cognitive component, such as problem restructuring (a key to transformative reasoning ...
Sheth, Bhavin R.   +2 more
core   +1 more source

Beta band oscillations in motor cortex reflect neural population signals that delay movement onset

open access: yeseLife, 2017
Motor cortical beta oscillations have been reported for decades, yet their behavioral correlates remain unresolved. Some studies link beta oscillations to changes in underlying neural activity, but the specific behavioral manifestations of these reported
Preeya Khanna, Jose M Carmena
doaj   +1 more source

Sustained neural rhythms reveal endogenous oscillations supporting speech perception.

open access: yesPLoS Biology, 2021
Rhythmic sensory or electrical stimulation will produce rhythmic brain responses. These rhythmic responses are often interpreted as endogenous neural oscillations aligned (or "entrained") to the stimulus rhythm.
Sander van Bree   +3 more
doaj   +1 more source

Ontogeny of neural circuits underlying spatial memory in the rat [PDF]

open access: yes, 2012
Spatial memory is a well-characterized psychological function in both humans and rodents. The combined computations of a network of systems including place cells in the hippocampus, grid cells in the medial entorhinal cortex and head direction cells ...
Langston, Rosamund F.; id_orcid   +7 more
core   +1 more source

Computational design and nonlinear dynamics of a recurrent network model of the primary visual cortex. [PDF]

open access: yes, 2001
Recurrent interactions in the primary visual cortex make its output a complex nonlinear transform of its input. This transform serves preattentive visual segmentation, that is, autonomously processing visual inputs to give outputs that selectively ...
Li, Z, Li, Z., Zhaoping Li
core   +1 more source

Novel cyclic homogeneous oscillation detection method for high accuracy and specific characterization of neural dynamics

open access: yeseLife
Determining the presence and frequency of neural oscillations is essential to understanding dynamic brain function. Traditional methods that detect peaks over 1/f noise within the power spectrum fail to distinguish between the fundamental frequency and ...
Hohyun Cho   +3 more
doaj   +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

Brain stimulation competes with ongoing oscillations for control of spike timing in the primate brain

open access: yesPLoS Biology, 2022
Transcranial alternating current stimulation (tACS) is a popular method for modulating brain activity noninvasively. In particular, tACS is often used as a targeted intervention that enhances a neural oscillation at a specific frequency to affect a ...
Matthew R. Krause   +3 more
doaj   +2 more sources

Measuring the Coupling Direction between Neural Oscillations with Weighted Symbolic Transfer Entropy

open access: yesEntropy, 2020
Neural oscillations reflect rhythmic fluctuations in the synchronization of neuronal populations and play a significant role in neural processing. To further understand the dynamic interactions between different regions in the brain, it is necessary to ...
Zhaohui Li   +3 more
doaj   +1 more source

Gamma flicker triggers attentional selection without awareness [PDF]

open access: yes, 2009
Gamma band modulations in neural activity have been proposed to mediate attentional processes. To support a causal link between gamma activity and attentional selection, we attempt to evoke gamma oscillations by a 50-Hz subliminal flicker. We find that a
Usher, Marius   +10 more
core   +1 more source

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