Journal
TRENDS IN COGNITIVE SCIENCES
Volume 22, Issue 5, Pages 422-437Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tics.2018.02.011
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Funding
- Medical Research Council [SUAG/002/RG91365]
- MRC [MC_UU_00005/6] Funding Source: UKRI
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Attention alters three key properties of population neural activity - firing rate, rate variability, and shared variability between neurons. All three properties are well explained by a single canonical computation - normalization - that acts across hierarchically integrated brain systems. Combining data from rodents and nonhuman primates, we argue that cortical cholinergic modulation originating from the basal forebrain closely mimics the effects of directed attention on these three properties of population neural activity. Cholinergic modulation of the cortical microcircuit underlying normalization may represent a key biological basis for the rapid and flexible changes in population neuronal coding that are required by directed attention.
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