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. 2017 Nov 7;11:100. doi: 10.3389/fnana.2017.00100

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Copyright © 2017 Shepherd and Rowe.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Basic cortical neuron types and laminae. (A) Neocortex (S1 barrel cortex). Intratelencephalic (IT) cells are found in layers 2–6; they connect only within the neocortex and basal ganglia. Pyramidal tract (PT) cells are restricted to L5B; they connect through the PT to the entire neuraxis. Corticothalamic (CT) cells are restricted to L6; they connect to the thalamus. L4IT: found mostly in L4, connect locally. See text. Adapted from Oberlaender et al. (2012) and Harris and Shepherd (2015). (B) Olfactory cortex IT pyramidal neurons are found in layers IIa, IIb and III. S, semilunar cells (lack basal dendrites); SP, small pyramids; DP, deep pyramids. Adapted from Neville and Haberly (2004).