отрывок по психологии. помогите перевести психол.

[mushka-blaga]

One of the most important aspects of brain development is that as one ascends the phylogenetic scale one rinds that less of the cortex. is concerned with purely sensory and motor functions and more is concerned with complex integrative functions that seem to be the basis for complex learning.

as one ascends the phylogenetic scale - зд. спускаясь по филогенетической лестнице.