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. Author manuscript; available in PMC: 2014 Nov 1.
Published in final edited form as: Exp Neurol. 2013 Aug 8;249:10.1016/j.expneurol.2013.07.019. doi: 10.1016/j.expneurol.2013.07.019

Figure 3.

Figure 3

Diagram of the preparations that were used to determine the influence of pathway predegeneration on specificity generation. Data were obtained by retrograde labeling the distal pathways shown in black. Resulting motoneuron counts were subjected to longitudinal Poisson regression analysis. PMR is the difference between the number of motoneurons correctly reinnervating distal muscle nerve and/or muscle and the number incorrectly reinnervating distal cutaneous nerve and/or skin. PMR was significantly greater (p<0.001) when the pathway had been predegenerated.