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. Author manuscript; available in PMC: 2008 Jun 27.
Published in final edited form as: Neuroscience. 2007 Jul 17;152(4):970–981. doi: 10.1016/j.neuroscience.2007.07.014

Fig. 3.

Fig. 3

A plot of the number of asymmetric and symmetric synapses present per mm3 in the neuropil of layer 5 against age. The dashed line superimposed on the plot for asymmetric synapses is the piecewise analysis, which shows that the loss of these synapses with age is gradual.