# New vistas for α-frequency band oscillations

@article{Palva2007NewVF,
title={New vistas for $\alpha$-frequency band oscillations},
author={Satu Palva and J. Matias Palva},
journal={Trends in Neurosciences},
year={2007},
volume={30},
pages={150-158}
}
• Published 1 April 2007
• Biology, Psychology
• Trends in Neurosciences
1,077 Citations

## Figures from this paper

### FEF-Controlled Alpha Delay Activity Precedes Stimulus-Induced Gamma-Band Activity in Visual Cortex

• Psychology, Biology
The Journal of Neuroscience
• 2017
Using noninvasive human MEG recordings in subjects performing a visuospatial attention task, it is shown that fluctuations in alpha power during a delay period in a spatial attention task preceded subsequent stimulus-driven gamma-band activity, and this interactions correlated with behavioral performance.

### Localization of Cortical Phase and Amplitude Dynamics during Visual Working Memory Encoding and Retention

• Biology, Psychology
The Journal of Neuroscience
• 2011
Individual behavioral VWM capacity was predicted by both the magnitude of the N1 evoked response component in early visual regions and by the amplitudes of frontoparietal high-alpha and high-gamma band oscillations, which support the notion that beta- and gamma-band oscillations support the maintenance of object representations in VWM whereas alpha-, beta-, and Gamma-Band oscillations together contribute to attentional and executive processing.

### Modulations of ongoing alpha oscillations predict successful short-term visual memory encoding

• Psychology
Front. Hum. Neurosci.
• 2012
Alpha-frequency band oscillations have been shown to be one of the most prominent aspects of neuronal ongoing oscillatory activity, as reflected by electroencephalography recordings, and the role of oscillations in the upper alpha-band was investigated during a change-detection test of short-term visual memory.

### Entrainment of Neuronal Oscillations as a Mechanism of Attentional Selection

• Biology
Science
• 2008
It is shown that when attended stimuli are in a rhythmic stream, delta-band oscillations in the primary visual cortex entrain to the rhythm of the stream, resulting in increased response gain for task-relevant events and decreased reaction times.

### Beta, but Not Gamma, Band Oscillations Index Visual Form-Motion Integration

• Biology, Psychology
PloS one
• 2014
Trial-by-trial classification of perceptual reports based on beta band oscillations was significant in most observers, further supporting the view that modulation of beta power reliably index perceptual integration of form/motion stimuli, even at the individual level.

### Functional Roles of 10 Hz Alpha-Band Power Modulating Engagement and Disengagement of Cortical Networks in a Complex Visual Motion Task

• Biology, Psychology
PloS one
• 2014
These findings suggest a decoupling of the 10 Hz frequency into separate functional roles: sensory inhibition in the visual processing regions and spatial attention in the frontoparietal regions.

### α-Oscillations in the monkey sensorimotor network influence discrimination performance by rhythmical inhibition of neuronal spiking

• Biology, Psychology
Proceedings of the National Academy of Sciences
• 2011
The pulsed inhibition by α-oscillations plays an important functional role in the extended sensorimotor system and is suggested to exercise a strong inhibitory influence on both spike timing and firing rate.

## References

SHOWING 1-10 OF 85 REFERENCES

### EEG alpha synchronization and functional coupling during top‐down processing in a working memory task

• Psychology, Biology
Human brain mapping
• 2005
Evidence is provided that during top‐down processing in a working memory task, α power increases at prefrontal but decreases at occipital electrode sites, thereby reaching a state in which α power and frequency become very similar over large distances.

### Phase Synchrony among Neuronal Oscillations in the Human Cortex

• Biology, Psychology
The Journal of Neuroscience
• 2005
It is demonstrated, using magnetoencephalography, that robust cross-frequency phase synchrony is present in the human cortex among oscillations with frequencies from 3 to 80 Hz and that it is modulated by cognitive task demands.

### Oscillations in the alpha band (9-12 Hz) increase with memory load during retention in a short-term memory task.

• Biology, Psychology
Cerebral cortex
• 2002
It is found that the alpha peak systematically increased with the number of items held in working memory and the load dependence and the tight temporal regulation of alpha provide strong evidence that thealpha generating system is directly or indirectly linked to the circuits responsible for working memory.

### High Gamma Power Is Phase-Locked to Theta Oscillations in Human Neocortex

• Biology, Psychology
Science
• 2006
The results indicate that transient coupling between low- and high-frequency brain rhythms coordinates activity in distributed cortical areas, providing a mechanism for effective communication during cognitive processing in humans.

### Induced gamma-band activity during the delay of a visual short-term memory task in humans.

• Psychology, Biology
The Journal of neuroscience : the official journal of the Society for Neuroscience
• 1998
It has been hypothesized that visual objects could be represented in the brain by a distributed cell assembly synchronized on an oscillatory mode in the gamma-band (20-80 Hz). If this hypothesis is

### Memory processes, brain oscillations and EEG synchronization.

• W. Klimesch
• Psychology
International journal of psychophysiology : official journal of the International Organization of Psychophysiology
• 1996

### Alpha phase synchronization predicts P1 and N1 latency and amplitude size.

• Physics
Cerebral cortex
• 2005
A memory task in which human subjects had to retrieve a verbal label in response to the presentation of a picture shows that the latencies of ERP components can be predicted at least in part by phase synchronization between frequencies.

### A beta2-frequency (20–30 Hz) oscillation in nonsynaptic networks of somatosensory cortex

• Biology
Proceedings of the National Academy of Sciences
• 2006
A beta2 frequency oscillation occurring in vitro in networks of layer V pyramidal cells, the cells of origin of the corticospinal tract, depends on gap junctional coupling, but it survives a cut through layer 4 and, hence, does not depend on apical dendritic electrogenesis.

### Prestimulus Oscillations Enhance Psychophysical Performance in Humans

• Psychology, Biology
The Journal of Neuroscience
• 2004
The data indicate that the prestimulus oscillatory activity detected over sensorimotor and parietal cortices has a profound effect on the processing of weak stimuli and suggest that ongoing oscillations in sensory cortices may optimize theprocessing of sensory stimuli with the same mechanism as noise sources in intrinsic stochastic resonance.