Figure 4.
Proportion of GABAergic and non-GABAergic terminals in contact with ChAT-labeled neurons in the putamen of four monkeys. A: Mean percentage (± SEM) of terminals categorized as “symmetric/GABAergic,” “symmetric/unknown,” or “asymmetric/non-GABAergic.” These categories were based on the relative density of gold particle labeling in terminals forming synaptic contact with ChAT-containing neurons. The gold particle density criteria for each terminal category are described in the legend of Figure 3 and in the text. B: Comparison of the distribution of the different categories of terminals along the entire somatodendritic domain of striatal cholinergic interneurons. The legend key used in A also applies here. *, P < 0.001 Symm, GABAergic versus Symm, Unknown and Asymm, non-GABAergic; #, P < 0.001 Symm/GABAergic versus Symm, Unknown.