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The phylogenetically oldest part of the cortical mantle of the cerebral hemisphere, represented by the olfactory cortex.
paleocortex/pa·leo·cor·tex/ (-kor´teks) [paleo- +cortex ] that portion of the cerebral cortex that, with the archicortex, develops in association with the olfactory system and is phylogenetically older and less stratified than the neocortex. It is composed chiefly of the piriform cortex and the parahippocampal gyrus. Spelled also palaeocortex .paleocor´tical
the phylogenetically oldest part of the cerebral cortex, particularly the olfactory bulb.
mesocortexA region of the brain between the isocortex and allocortex, which contains the 1st, 5th and 6th layers and merged 2nd, 3rd and 4th layers.
The oldest part phylogenetically of the cortical mantle of the cerebral hemisphere, represented by the olfactory cortex.