Table 2 Results of four psychometric tests for individual patients. The normal range derives from a data set obtained from a cohort of healthy age matched controls.

Patient No	NCT A (s)	NCT B (s)	Digit symbol	Digit copying
1	32	100	76	128
2	55	Not completed	50	154
3	59	Not completed	45	118
4	31	90	67	143
5	72	Not completed	19	80
Normal range	15–37 s	31–81 s	55–90	124–208

NCT, number connection tests.