Visual Mechanisms of Spatial Disorientation in Alzheimer's Disease by Hope L. O'Brien, Sheldon J. Tetewsky, Lisa M. Avery, Laura A. Cushman, Walter Makous and Charles J. Duffy. Cerebral Cortex November 2001, Volume 11 Number 11, pp. 1083–1092.

In the above article, line 3 in Table 1 is incorrect. The row of data for AD subjects should read 25.0 ± 0.52, 24.6 ± 0.97, 5.4 ± 0.25, 10.0 ± 0.82, 3.7 ± 0.40. The correct table is printed below:

Table 2

Results of neuropsychological testing for each group

Subject group MMSE (30) Road Map (32) Figural (10) Verbal (24) Delayed (8) 
Data are mean ± SEM. AD subjects had the lowest scores on all neuropsychological tests. Neuropsychological tests: MMSE, mini-mental state exam; Road Map, Money road map test; Figural memory, verbal immediate memory, and verbal delayed memory from the Wechsler memory scale. (Values in parentheses are maximum scores.) YN, young normals (n = 32); EN, elderly normals (n = 50); AD, Alzheimer's disease subjects (n = 26). 
YN 29.8 ± 0.09 31.6 ± 0.15 8.6 ± 0.13 22.2 ± 0.30 8.0 ± 0.03 
EN 29.5 ± 0.14 29.5 ± 0.43 7.3 ± 0.19 18.7 ± 0.55 7.2 ± 0.19 
AD 25.0 ± 0.52 24.6 ± 0.97 5.4 ± 0.25 10.0 ± 0.82 3.7 ± 0.40 
Subject group MMSE (30) Road Map (32) Figural (10) Verbal (24) Delayed (8) 
Data are mean ± SEM. AD subjects had the lowest scores on all neuropsychological tests. Neuropsychological tests: MMSE, mini-mental state exam; Road Map, Money road map test; Figural memory, verbal immediate memory, and verbal delayed memory from the Wechsler memory scale. (Values in parentheses are maximum scores.) YN, young normals (n = 32); EN, elderly normals (n = 50); AD, Alzheimer's disease subjects (n = 26). 
YN 29.8 ± 0.09 31.6 ± 0.15 8.6 ± 0.13 22.2 ± 0.30 8.0 ± 0.03 
EN 29.5 ± 0.14 29.5 ± 0.43 7.3 ± 0.19 18.7 ± 0.55 7.2 ± 0.19 
AD 25.0 ± 0.52 24.6 ± 0.97 5.4 ± 0.25 10.0 ± 0.82 3.7 ± 0.40