Figure 1.
Typical MRI of G0 (right panel) and G2 (left panel; arrows indicate leukoaraiosis).
Figure 2.
Diagram of the designated route at the testing center.
Figure 3.
Flow of the paced auditory serial addition test.
Figure 4.
Positions of the 6-axis accelerometers in the car.
Figure 5.
Normalized values of correct answer rates of PASAT (mean ± S.D.).
Figure 6.
Normal operation errors.
Figure 7.
Critical operation errors.
Figure 8.
Differences in normal operation errors with and without PASAT (one-way ANOVA analysis: F(1, 18) = 5.18 and p<0.05; and F(1, 20) = 4.750 and p<0.05).
Figure 9.
Differences in critical operation errors only for temporary stop with and without PASAT (one-way ANOVA analysis: * F(1, 18) = 4.91 and p<0.05; ** F(1, 22) = 4.34 and p<0.05; and *** F(1, 20) = 17.54 and p<0.001).
Figure 10.
Steering entropy values with and without PASAT for right turns.
Figure 11.
Ratios of steering entropy values for right turns (one-way ANOVA analysis: * F(1, 18) = 4.91 and p<0.05; ** F(1, 22) = 4.50 and p<0.05; and *** F(1, 20) = 6.21 and p<0.05).
Figure 12.
Steering entropy values with and without PASAT for left turns.
Figure 13.
Ratios of steering entropy values for left turns (one-way ANOVA analysis: * F(1, 18) = 14.20 and p<0.01; and ** F(1, 20) = 11.01 and p<0.01).
Figure 14.
Diagram of regression analysis for making right turns with PASAT.
Figure 15.
Diagram of regression analysis for making right turns without PASAT.