Dynamics of coherent activity between cortical areas defines a two-stage process of selective attention

Levichkina, Ekaterina; Kermani, Mojtaba; Saalmann, Yuri B.; Vidyasagar, T. R.

doi:10.1101/2020.02.09.940791

2020

DOI: 10.1101/2020.02.09.940791

|View full text |Cite

Preprint

Dynamics of coherent activity between cortical areas defines a two-stage process of selective attention

Ekaterina Levichkina

Mojtaba Kermani

Yuri B. Saalmann

et al.

Abstract: Analysing a visual scene requires the brain to briefly keep in memory potentially relevant parts and then direct attention to their locations for detailed processing.To reveal the neuronal basis of the underlying working memory and top-down attention processes, we trained macaques to match two patterns presented with a

Help me understand this report

View published versions

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2020

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 35 publications

(58 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…increases with attention in a behaviorally relevant manner 16,27,30 . Moreover, recent investigations document a prominent role of low frequency oscillations, especially in the alpha/theta band, in attentional processing and shaping large-scale task-related functional networks of the brain [31][32][33] .…”

mentioning

confidence: 99%

Attention strengthens across-trial pre-stimulus phase coherence in visual cortex, enhancing stimulus processing

Zareian

Maboudi

Daliri

et al. 2020

Sci Rep

View full text Add to dashboard Cite

Attention selectively routes the most behaviorally relevant information from the stream of sensory inputs through the hierarchy of cortical areas. previous studies have shown that visual attention depends on the phase of oscillatory brain activities. these studies mainly focused on the stimulus presentation period, rather than the pre-stimulus period. Here, we hypothesize that selective attention controls the phase of oscillatory neural activities to efficiently process relevant information. We document an attentional modulation of pre-stimulus inter-trial phase coherence (a measure of deviation between instantaneous phases of trials) of low frequency local field potentials (LFP) in visual area Mt of macaque monkeys. our data reveal that phase coherence increases following a spatial cue deploying attention towards the receptive field of the recorded neural population. We further show that the attentional enhancement of phase coherence is positively correlated with the modulation of the stimulus-induced firing rate, and importantly, a higher phase coherence is associated with a faster behavioral response. these results suggest a functional utilization of intrinsic neural oscillatory activities for an enhanced processing of upcoming stimuli.One of the most important cognitive functions of the mammalian brain is selective attention. Attention selectively routes the most behaviorally relevant information from the stream of sensory inputs through the hierarchy of cortical areas. This allows the brain to make the most efficient use of its limited neural resources and to create appropriate behavioral responses quickly 1 . Attentional influences on neural responses in sensory cortex have been extensively documented; effects which reflect a multitude of aspects of cortical information processing 1-4 . Covertly directing attention towards the receptive field of a neuron in visual cortex enhances the neural responses even in the absence of visual stimulation 5,6 , alters the shape and profile of receptive fields 7-9 , modulates the variability and temporal structure of the neuron's firing patterns 10,11 , modulates inter-neuronal correlations to increase neural discriminability 12,13 and synchronizes neighboring neurons, presumably to better propagate information to downstream areas [14][15][16] .Attention has been suggested to exploit oscillatory neural activities, as well as oscillatory components of local field potentials (LFP), to enhance the efficacy of cortical processing 17-23 . LFPs represent synaptic activities of local cortical neuronal populations 24 . Their oscillations are tightly linked to attention in both low and high frequencies 18,[25][26][27][28][29] . Previous studies have shown that synchronization in the gamma as well as high gamma band

show abstract

mentioning

confidence: 99%

Attention strengthens across-trial pre-stimulus phase coherence in visual cortex, enhancing stimulus processing

Zareian

Maboudi

Daliri

et al. 2020

Sci Rep

View full text Add to dashboard Cite

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Dynamics of coherent activity between cortical areas defines a two-stage process of selective attention

Cited by 1 publication

References 35 publications

Attention strengthens across-trial pre-stimulus phase coherence in visual cortex, enhancing stimulus processing

Attention strengthens across-trial pre-stimulus phase coherence in visual cortex, enhancing stimulus processing

Contact Info

Product

Resources

About