Fig. 1

Schematic models of cortical laminar transition of the inter-areal signal. a It remains elusive whether the laminar transition of inter-areal signal between higher-order and lower-order cortical areas depends on cognitive operations. IG infragranular layer, SG supragranular layer. b Lateral and coronal views of a monkey brain. A36, area 36. TE, area TE. A, anterior. P, posterior. c Behavioral task. To characterize laminar specificity of inter-areal interaction during cue perception and memory retrieval in cued-recall, an object association memory task was used. In the task, monkeys were required to retrieve the learned paired associate of the presented cue stimulus. See Methods for details