Dynamic attention signalling in V4: Relation to fast-spiking/non-fast-spiking cell class and population coupling.

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

SUBMITTER: Sachse EM 

PROVIDER: S-EPMC11521100 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature