Dynamics of coherent activity between cortical areas defines a two-stage process of top-down attention
E Levichkina, M Kermani, YB Saalmann, TR Vidyasagar
EXPERIMENTAL BRAIN RESEARCH | SPRINGER | Published : 2021
Analysing a visual scene requires the brain to briefly keep in memory potentially relevant items of that scene 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 delay between them. As the above processes are likely to require communication between brain regions, and the parietal cortex is known to be involved in spatial attention, we simultaneously recorded neuronal activities from the interconnected parietal and middle temporal areas. We found that mnemonic information about features of the first pattern was retained i..View full abstract
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Awarded by Australian National Health and Medical Research Council
This work was supported by project grants (251600, 454676 and 628668) from the Australian National Health and Medical Research Council to T.R.V. E.L. was partly supported by ARC Centre of Excellence in Integrative Brain Function.