Results 11 to 20 of about 1,305 (206)

Auditory Perceptual History Is Propagated through Alpha Oscillations [PDF]

Current Biology, 2019
Perception is a proactive, "predictive" process, in which the brain relies, at least in part, on accumulated experience to make best guesses about the world to test against sensory data, updating the guesses as new experience is acquired. Using novel behavioral methods, the present study demonstrates the role of alpha rhythms in communicating past ...
Hao Tam Ho, David Charles Burr, David Alais   +2 more
exaly   +6 more sources

Alpha Oscillations Shape Sensory Representation and Perceptual Sensitivity [PDF]

The Journal of Neuroscience, 2021
Alpha activity (8–14 Hz) is the dominant rhythm in the awake brain and is thought to play an important role in setting the internal state of the brain. Previous work has associated states of decreased alpha power with enhanced neural excitability. However, evidence is mixed on whether and how such excitability enhancement modulates sensory signals of ...
Zhou, Y., Iemi, L., Schoffelen, J.M., Schoffelen, J.M., de Lange, F.P., de Lange, F.P., Haegens, S.   +6 more
openaire   +4 more sources

Spontaneous Alpha-Band Oscillations Bias Subjective Contrast Perception [PDF]

The Journal of Neuroscience, 2021
AbstractPerceptual decisions depend both on the features of the incoming stimulus and on the ongoing brain activity at the moment the stimulus is received. Specifically, trial-to-trial fluctuations in cortical excitability have been linked to fluctuations in the amplitude of pre-stimulus alpha oscillations (≈8-13 Hz), which are in turn are associated ...
Elio Balestrieri, Niko A. Busch
openaire   +2 more sources

Event-related modulation of alpha rhythm explains the auditory P300-evoked response in EEG

eLife, 2023
Evoked responses and oscillations represent two major electrophysiological phenomena in the human brain yet the link between them remains rather obscure.
Alina Studenova, Carina Forster, Denis Alexander Engemann, Tilman Hensch, Christian Sanders, Nicole Mauche, Ulrich Hegerl, Markus Loffler, Arno Villringer, Vadim Nikulin   +9 more
doaj   +1 more source

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

Is there frequency-specificity in the motor control of walking? The putative differential role of alpha and beta oscillations

Frontiers in Systems Neuroscience, 2022
Alpha and beta oscillations have been assessed thoroughly during walking due to their potential role as proxies of the corticoreticulospinal tract (CReST) and corticospinal tract (CST), respectively.
Charalambos C. Charalambous, Charalambos C. Charalambous, Avgis Hadjipapas, Avgis Hadjipapas   +3 more
doaj   +1 more source

Slowed alpha oscillations and percept formation in psychotic psychopathology

Frontiers in Psychology, 2023
IntroductionPsychosis is in part defined by disturbances in perception. Recent investigations have implicated the speed of alpha oscillations observed in brain electrical activity as reflective of a sampling rate of the visual environment and perception.
Scott R. Sponheim, Scott R. Sponheim, Joshua J. Stim, Stephen A. Engel, Victor J. Pokorny   +4 more
doaj   +1 more source

Intra-cortical propagation of EEG alpha oscillations [PDF]

NeuroImage, 2014
The most salient feature of spontaneous human brain activity as recorded with electroencephalography (EEG) are rhythmic fluctuations around 10Hz. These alpha oscillations have been reported to propagate over the scalp with velocities in the range of 5-15m/s. Since these velocities are in the range of action potential velocities through cortico-cortical
Rikkert Hindriks, Michel J.A.M. van Putten, Gustavo Deco   +2 more
openaire   +3 more sources

Alpha oscillation, criticality, and responsiveness in complex brain networks

Network Neuroscience, 2020
Brains in unconsciousness are characterized by significantly limited responsiveness to stimuli. Even during conscious wakefulness, responsiveness is highly dependent on ongoing brain activity, specifically, of alpha oscillations (∼10 Hz). We hypothesized
Kim, MinKyung, Lee, UnCheol
doaj   +1 more source