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• W4319059992 abstract "The computational role of a neuron during attention depends on its firing properties, neurotransmitter expression and functional connectivity. Neurons in the visual cortical area V4 are reliably engaged by selective attention but exhibit diversity in the effect of attention on firing rates and correlated variability. It remains unclear what specific neuronal properties shape these attention effects. In this study, we quantitatively characterised the distribution of attention modulation of firing rates across populations of V4 neurons. Neurons exhibited a continuum of time-varying attention effects. At one end of the continuum, neurons' spontaneous firing rates were slightly depressed with attention (compared to when unattended), whereas their stimulus responses were enhanced with attention. The other end of the continuum showed the converse pattern: attention depressed stimulus responses but increased spontaneous activity. We tested whether the particular pattern of time-varying attention effects that a neuron exhibited was related to the shape of their actions potentials (so-called 'fast-spiking' [FS] neurons have been linked to inhibition) and the strength of their coupling to the overall population. We found an interdependence among neural attention effects, neuron type and population coupling. In particular, we found neurons for which attention enhanced spontaneous activity but suppressed stimulus responses were less likely to be fast-spiking (more likely to be non-fast-spiking) and tended to have stronger population coupling, compared to neurons with other types of attention effects. These results add important information to our understanding of visual attention circuits at the cellular level." @default.
• W4319059992 created "2023-02-04" @default.
• W4319059992 creator A5046599050 @default.
• W4319059992 creator A5086083669 @default.
• W4319059992 date "2023-03-01" @default.
• W4319059992 modified "2023-10-15" @default.
• W4319059992 title "Dynamic attention signalling in V4: Relation to fast‐spiking/non‐fast‐spiking cell class and population coupling" @default.
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• W4319059992 doi "https://doi.org/10.1111/ejn.15928" @default.
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• W4319059992 hasPublicationYear "2023" @default.
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