Brodmann area 27 is a cytoarchitecturally defined cortical area that is a rostral part of the parahippocampal gyrus.

It is commonly regarded as a synonym of presubiculum.

[1] The dorsal part of the presubiculum is more commonly known as the postsubiculum,[2] and is of interest because it contains head direction cells, which are responsive to the facing direction of the head.

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