Fig. 4From: Hippocampal CA2 Lewy pathology is associated with cholinergic degeneration in Parkinson’s disease with cognitive declineCA2 hippocampal subfield proteinaceous pathology burden and septohippocampal cholinergic deficit in PD with varying degrees of cognitive deficit. Scatter plots comparing tau (a) and αSN (b) pathology in PD, PD-MCI and PDD. Note that 7 diagnostic slides for tau analysis and 9 for αSN analysis had to be excluded due to poor tissue quality and the difficulty in accurately identifying the CA2 subfield. Error bars showing mean ± SEM. Box-and-whiskers plots comparing nvlDBB (Ch2) mean cholinergic neuron count (c) and CA2 ChAT-positive varicosities (d) between PD, PD-MCI and PDD cases. Correlation scatter graph showing the relationship between Ch2 mean cholinergic neuronal count and CA2 hippocampal subfield ChAT-positive varicosity (e). An outlier was observed and is indicated by a box. *p < 0.05; **p < 0.01; ****p < 0.0001Back to article page