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Table 2 Correlations between neuron number and cognitive test scores: NCI and aMCI subjects only

From: Locus coeruleus cellular and molecular pathology during the progression of Alzheimer’s disease

MMSE r = 0.46 (p = 0.03)
GCS r = 0.58 (p = 0.006)
episodic memory r = 0.55 (p = 0.01)
semantic memory r = 0.29 (p = 0.2)
working memory r = 0.6 (p = 0.004)
perceptual speed r = 0.51 (p = 0.02)
visuospatial ability r = 0.55 (p = 0.009)