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. Author manuscript; available in PMC: 2013 Aug 1.
Published in final edited form as: Curr Opin Neurobiol. 2012 Apr 11;22(4):575–579. doi: 10.1016/j.conb.2012.03.005

Figure 2.

Figure 2

Identification of various pathways as Class 1 or 2. A: Pathways in mouse thalamic and cortical circuits [4–13]. B: Example from auditory thalamocortical relationships of impact of classification on understanding of circuits [9]. The dominant view is that the MGBv and MGBd represent two parallel streams of information relayed to cortex from the ICc and ICs, respectively (i). Identification of inputs shows that the input from ICs to MGBd is Class 2, and thus modulates input to that nucleus from layer 5 of cortex (ii).