highly significantP < 0.0001
Jennrich tests confirmed highly significant statistical differences between controls and Alzheimer’s disease (χ 2 = 1.15 × 10 8 , n 1 = 12, n 2 = 17, P < 0.0001); controls and PSP (χ 2 = 975 547, n 1 = 12, n 2 = 17, P < 0.0001); and Alzheimer’s disease and PSP (χ 2 = 733 030, n 1 = 17, n 2 = 17, P < 0.0001).