Results 31 to 40 of about 124,132 (280)

Alpha oscillatory activity is causally linked to working memory retention.

PLoS Biology, 2023
Although previous studies have reported correlations between alpha oscillations and the "retention" subprocess of working memory (WM), causal evidence has been limited in human neuroscience due to the lack of delicate modulation of human brain ...
Xueli Chen, Ru Ma, Wei Zhang, Ginger Qinghong Zeng, Qianying Wu, Ajiguli Yimiti, Xinzhao Xia, Jiangtian Cui, Qiongwei Liu, Xueer Meng, Junjie Bu, Qi Chen, Yu Pan, Nancy Xiaonan Yu, Shouyan Wang, Zhi-De Deng, Alexander T Sack, Myles Mc Laughlin, Xiaochu Zhang   +18 more
doaj   +1 more source

Cortical Alpha Oscillations Predict Speech Intelligibility [PDF]

Frontiers in Human Neuroscience, 2017
Understanding speech in noise (SiN) is a complex task involving sensory encoding and cognitive resources including working memory and attention. Previous work has shown that brain oscillations, particularly alpha rhythms (8-12 Hz) play important roles in sensory processes involving working memory and attention.
Dimitrijevic, Andrew, Smith, Michael L., Kadis, Darren S., Moore, David R.   +3 more
openaire   +2 more sources

Alpha Oscillations and Early Stages of Visual Encoding [PDF]

Frontiers in Psychology, 2011
For a long time alpha oscillations have been functionally linked to the processing of visual information. Here we propose an new theory about the functional meaning of alpha. The central idea is that synchronized alpha reflects a basic processing mode that controls access to information stored in a complex long-term memory system, which we term ...
Wolfgang eKlimesch, Robert eFellinger, Roman eFreunberger, Roman eFreunberger   +3 more
openaire   +4 more sources

Stimulus-evoked and resting-state alpha oscillations show a linked dependence on patterned visual experience for development

NeuroImage: Clinical, 2023
Persistent visual impairments after congenital blindness due to dense bilateral cataracts have been attributed to altered visual cortex development within a sensitive period.
Rashi Pant, José Ossandón, Liesa Stange, Idris Shareef, Ramesh Kekunnaya, Brigitte Röder   +5 more
doaj   +1 more source

The functional roles of alpha-band phase synchronization in local and large-scale cortical networks

Frontiers in Psychology, 2011
Alpha-frequency band (8-14 Hz) oscillations are among the most salient phenomena in human electroencephalography (EEG) recordings and yet their functional roles have remained unclear.
Satu ePalva, J. Matias ePalva
doaj   +1 more source

Signatures of Thalamocortical Alpha Oscillations and Synchronization With Increased Anesthetic Depths Under Isoflurane

Frontiers in Pharmacology, 2022
Background: Electroencephalography (EEG) recordings under propofol exhibit an increase in slow and alpha oscillation power and dose-dependent phase–amplitude coupling (PAC), which underlie GABAA potentiation and the central role of thalamocortical ...
Jingyao Jiang, Jingyao Jiang, Yi Zhao, Yi Zhao, Jin Liu, Jin Liu, Yaoxin Yang, Peng Liang, Han Huang, Yongkang Wu, Yi Kang, Tao Zhu, Cheng Zhou   +12 more
doaj   +1 more source

Variations of Alpha in Space and Time [PDF]

, 2002
We study inhomogeneous cosmological variations in the fine structure 'constant', $\alpha ,$ in Friedmann universes. Inhomogeneous motions of the scalar field driving changes in $\alpha $ display spatial oscillations that decrease in amplitude with ...
Barrow, J. D., Magueijo, J., Sandvik, H. B.   +2 more
core   +1 more source

Attentional switching-related human EEG alpha oscillations

Neuroreport, 2002
Alpha oscillations during cognitive performance have mostly been studied in memory and/or basic attention tasks. This study investigates task-related alpha power desynchronization during an attentional switching task requiring higher executive attentional control.
Verstraeten, Edwin, Cluydts, Raymond
openaire   +5 more sources

Time-Series Prediction of the Oscillatory Phase of EEG Signals Using the Least Mean Square Algorithm-Based AR Model

Applied Sciences, 2020
Neural oscillations are vital for the functioning of a central nervous system because they assist in brain communication across a huge network of neurons.
Aqsa Shakeel, Toshihisa Tanaka, Keiichi Kitajo   +2 more
doaj   +1 more source

Do spherical alpha^2-dynamos oscillate?

, 2002
The question is answered whether kinematic alpha^2-shell-dynamos are able to produce a cyclic activity or not. The alpha-effect is allowed to be latitudinally inhomogeneous and/or anisotropic, but it is assumed as radially uniform in the turbulent shell.
Rüdiger, G., Elstner, D., Ossendrijver, M.   +2 more
openaire   +2 more sources