Classically, many cortical areas have been defined by their distinctive myeloarchitectonic laminar profiles. Here, we explore laminar transitions by adjusting the structural MRI resolution according to the average width of standard six cortical layers and by attenuating Gibbs’ ringing artefact using T1w/T2w-FLAIR ratio in anesthetized macaque monkeys. We demonstrate that laminar similarity measures, together with the ‘Human Connectome Project’-style midthickness weighted gradients, reveal sharp transitions between several cortical areas in heavily and lightly myelinated brain areas providing mutually supportive information of cortical organization.
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