Effects of Different Types of Cognitive Training on Cognitive Function, Brain Structure, and Driving Safety in Senior Daily Drivers: A Pilot Study

Table 2

Relationship between the difficulty levels and the periods of rhythmic stimuli in the immediate response task and delayed response task.

Levels	1	2	3	4	5	6	7	8	9	10
Period (s)	3.0	2.0	1.5	1.2	1.0	0.9	0.8	0.7	0.6	0.5