Left temporal alpha band activity increases during working memory retention of pitches

2010 ◽  
pp. no-no ◽  
Author(s):  
Hanneke Van Dijk ◽  
Ingrid L.C. Nieuwenhuis ◽  
Ole Jensen
Keyword(s):  
Working Memory ◽  
Memory Retention ◽  
Alpha Band ◽  
Band Activity

scholarly journals Examining encoding biases in visual working memory using alpha band activity

2020 ◽  
Vol 20 (11) ◽  
pp. 1248
Author(s):  
Gisella Diaz ◽  
Edward Vogel ◽  
Edward Awh
Keyword(s):  
Working Memory ◽  
Visual Working Memory ◽  
Alpha Band ◽  
Band Activity

Stimulus-induced Alpha Suppression Tracks the Difficulty of Attentional Selection, Not Visual Working Memory Storage

2020 ◽  
pp. 1-27 ◽  
Author(s):  
Sisi Wang ◽  
Emma E. Megla ◽  
Geoffrey F. Woodman
Keyword(s):  
Working Memory ◽  
Selective Attention ◽  
Visual System ◽  
Visual Processing ◽  
Stimulus Onset ◽  
Focus Of Attention ◽  
Memory Storage ◽  
Alpha Band ◽  
Perceptual Attention ◽  
Band Activity

Human alpha-band activity (8–12 Hz) has been proposed to index a variety of mechanisms during visual processing. Here, we distinguished between an account in which alpha suppression indexes selective attention versus an account in which it indexes subsequent working memory storage. We manipulated two aspects of the visual stimuli that perceptual attention is believed to mitigate before working memory storage: the potential interference from distractors and the size of the focus of attention. We found that the magnitude of alpha-band suppression tracked both of these aspects of the visual arrays. Thus, alpha-band activity after stimulus onset is clearly related to how the visual system deploys perceptual attention and appears to be distinct from mechanisms that store target representations in working memory.

scholarly journals Spatial selectivity of alpha band activity declines with increasing visual working memory load

2017 ◽  
Vol 17 (10) ◽  
pp. 332
Author(s):  
David Sutterer ◽  
Joshua Foster ◽  
Kirsten Adam ◽  
Edward Vogel ◽  
Edward Awh
Keyword(s):  
Working Memory ◽  
Visual Working Memory ◽  
Memory Load ◽  
Alpha Band ◽  
Working Memory Load ◽  
Spatial Selectivity ◽  
Band Activity

scholarly journals Covert Intention to Answer to Self-Referential Questions Is Represented in Alpha-Band Local and Interregional Neural Synchronies

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Jeong Woo Choi ◽  
Kwang Su Cha ◽  
Kyung Hwan Kim
Keyword(s):  
Working Memory ◽  
Cognitive Load ◽  
Interpersonal Communication ◽  
Mental Representation ◽  
Neural Mechanism ◽  
Memory Retention ◽  
Alpha Band ◽  
Attentional Demand ◽  
Binary Decision ◽  
Spectral Perturbation

The most fundamental and simplest intention for interpersonal communication may be the intentions to answer “yes” or “no” to a question, based on a binary decision. However, the neural mechanism of this type of intention has not been investigated in detail. The main purpose of this study was to investigate cortical processing of the “yes/no” intentions to answer self-referential questions. Multichannel electroencephalograms (EEGs) were recorded while covertly answering self-referential questions with either “yes” or “no”. Event-related spectral perturbation (ERSP) and interregional phase synchrony (PS) were investigated to identify the differences in local and global neural synchronies between two intentions. We found that the local and interregional neural synchronies in the alpha-band were significantly different between “yes” and “no,” especially at the period of retaining the intention in mind, which was greater for “no” than for “yes.” These results can be interpreted to signify that a higher cognitive load during working memory retention or higher attentional demand is required for the “no” intention compared to “yes.” Our findings suggest that both local and global neural synchronies in the alpha-band may be significantly differentiated during a critical temporal epoch, according to the contents of the mental representation of the intention.

scholarly journals Working memory reconstructions using alpha-band activity are disrupted by sensory input.

2017 ◽  
Vol 17 (10) ◽  
pp. 334
Author(s):  
Tom Bullock ◽  
Mary MacLean ◽  
Barry Giesbrecht
Keyword(s):  
Working Memory ◽  
Sensory Input ◽  
Alpha Band ◽  
Band Activity

scholarly journals Frequency-Selective Oscillatory Control of Working Memory Robustness to Distractors

2020 ◽  
Author(s):  
Nikita Novikov ◽  
Boris Gutkin
Keyword(s):  
Working Memory ◽  
Large Scale ◽  
Large Body ◽  
Active State ◽  
Dependent Manner ◽  
Alpha Band ◽  
Beta Band ◽  
Excitatory Effect ◽  
Theoretical Understanding ◽  
Band Activity

Working memory (WM) is the brain's ability to retain information that is not directly available from the sensory systems. WM retention is accompanied by sustained firing rate modulation and changes of the large-scale oscillatory profile. Among other changes, beta-band activity elevates in task-related regions, presumably stabilizing WM retention. Alpha-band activity, in turn, is stronger in task-irrelevant regions, serving to protect WM trace from distracting information. Although a large body of experimental evidence links neural oscillations to WM functions, theoretical understanding of their interrelations is still incomplete. In this study, we used a computational approach to explore a potential role of beta and alpha oscillations in control of WM stability. First, we examined a single bistable module that served as a discrete object representation and was resonant in the beta-band in the active state. We demonstrated that beta-band input produced differentially stronger excitatory effect on the module in the active state compared to the background state, while this difference decreased with the input frequency. We then considered a system of two competing modules, selective for a stimulus and for a distractor, respectively. We simulated a task, in which a stimulus was loaded into the first module, then an identical oscillatory input to both modules was turned on, after which a distractor was presented to the second module. We showed that beta-band input prevented loading of high-amplitude distractors and erasure of the stimulus from WM. On the contrary, alpha-band input promoted loading of low-amplitude distractors and the stimulus erasure. In summary, we demonstrated that stability of WM trace could be controlled by global oscillatory input in a frequency-dependent manner via controlling the level of competition between stimulus-encoding and distractor-encoding circuits. Such control is possible due to difference in the resonant and non-linear properties between the background and the active states.

scholarly journals Alpha-Band Activity Reveals Spontaneous Representations of Spatial Position in Visual Working Memory

2017 ◽  
Vol 27 (20) ◽  
pp. 3216-3223.e6 ◽  
Author(s):  
Joshua J. Foster ◽  
Emma M. Bsales ◽  
Russell J. Jaffe ◽  
Edward Awh
Keyword(s):  
Working Memory ◽  
Visual Working Memory ◽  
Spatial Position ◽  
Alpha Band ◽  
Band Activity
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