Table 3. Mean and SD of performance score of the PD patients (PD) and control subjects (C) for the long-term retention session.

	Block 20		Block 21
	Mean	SD	Mean	SD
PD 14	73.6	16.9	73.5	25.1
PD 15	83.9	11.3	80.7	15.1
PD 16*	58.1*	24.7*	32.0*	24.7*
PD 24	84.6	18.0	85.7	9.0
PD 25*	86.5*	10.6*	41.6*	30.9*
PD 26	87.4	16.0	68.6	22.9
C 3	91.6	7.3	88.4	9.0
C 6	84.9	11.0	76.3	19.6
C 8	81.2	28.5	87.2	8.9
C 9	87.4	9.3	79.7	14.7
C 11	91.2	7.1	87.3	14.1
C 17	91.1	8.1	87.0	14.3
C 22	94.0	5.4	89.1	9.5

The last block of the fifth practice day and the first block of the long-term retention session are shown. Results of Patient 16 and 25, who showed performance decreases in long-term retention, are highlighted with an asterisk.