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. Author manuscript; available in PMC: 2015 Jun 13.
Published in final edited form as: Curr Top Dev Biol. 2009;87:81–118. doi: 10.1016/S0070-2153(09)01203-4

Figure 3.4.

Figure 3.4

Cladistic hypothesis of cortical interneuron specification. We believe the fate of inhibitory neuron subtypes are sequentially influenced by both intrinsic genetic cues within the progenitor populations and environmental signals experienced by these populations postmitotically. In this model, we suggest that while the cardinal subdivisions are dependent on an intrinsic (genetic) program, the secondary subdivisions are determined later by environmental signals.