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Articles by Runhao Lu
Computer Science > Machine Learning
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Distinct and complementary mechanisms of oscillatory and aperiodic alpha activity in visuospatial attention
Abstract Alpha oscillations are thought to play a key role in visuospatial attention, particularly through lateralisation mechanisms. However, whether this function is driven purely by oscillatory activity or also involves aperiodic neural components remains unclear, making it difficult to develop precise theoretical models of alpha function and attention.
Oscillatory control over representational geometry of sequence working memory in macaque frontal cortex
Daily events of our lives all occur within the river of time. Our perception and memory of an event are based not only on the event’s constituent features but also on its temporal context. Writing down a friend’s phone number, for instance, requires one to sequentially memorize the identity of each digit and its ordinal position, then bind all digits into sequence working memory (SWM) for later action.
Aperiodic and oscillatory systems underpinning human domain-general cognition
Abstract Domain-general cognitive systems are essential for adaptive human behaviour, supporting various cognitive tasks through flexible neural mechanisms. From decades of fMRI studies, we know that a particular network of frontoparietal brain regions plays a role in supporting many different kinds of cognitive activity, with increased activity and information coding in response to increasing task demands.
Parietal alpha stimulation causally enhances attentional information coding in evoked and oscillatory activity
Abstract Selective attention is a fundamental cognitive mechanism that allows people to prioritise task-relevant information while ignoring irrelevant information. Previous research has suggested key roles of parietal evoked potentials and alpha oscillatory responses in spatial attention tasks. However, the informational content of these signals is less clear, and their causal effects on the coding of multiple task elements are yet unresolved.
The causal roles of parietal alpha oscillations and evoked potentials in coding task-relevant information during selective attention
Abstract Selective attention is a fundamental cognitive mechanism that allows people to prioritise task-relevant information while ignoring irrelevant information. Previous research has suggested key roles of parietal evoked potentials like N2pc, and parietal oscillatory responses like alpha power, in spatial attention tasks. However, the informational content of these signals is less clear.
Double auction and profit maximization mechanism for jobs with heterogeneous durations in cloud federations
Abstract By sharing resources with each other, different cloud providers in a cloud federation can exploit their diversity in resource configuration and operational cost so as to improve service performance. They should consider the strategy of resource pricing, job scheduling and server provisioning altogether to maximize their own interests. On the other hand, they need to efficiently trade the resources with a suitable mechanism, typically auction, so as to guarantee the participants’ profits.
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