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. Author manuscript; available in PMC: 2010 Aug 2.
Published in final edited form as: Nat Rev Neurosci. 2009 Oct;10(10):724–735. doi: 10.1038/nrn2719

Figure 6.

Figure 6

A. Neocortical areas of the human fetal cerebral hemispheres examined by Johnson et al.(2009) included four distinct subdivisions of the prefrontal cortex (PFC) (blue): orbital, medial, dorsolateral and ventrolateral (Brodman’s areas: 9, 13, 32,44, 45) and perisylvian areas (1–3,4,40,41,42) (yellow). In addition to the ventrolateral PFC, which encompasses the prospective Broca’s area, two other speech and language-related areas were assayed: parietal and temporal association cortices, which encompass the prospective Geschwind’s and Wernicke’s areas, respectively. B-C. Examples of different clusters of correlated gene expression patterns in the PFC and perisylvian (C) cortical areas (Adapted from REF. 124).