Recovery of Motor Imagery Ability in Stroke Patients

Table 1

Mean accuracy scores for patients that were impaired on the implicit motor imagery and, or the visual imagery task and, or the explicit motor imagery task versus control subjects (SD in parentheses) at 3 weeks poststroke. Impairment of individual patients versus controls was tested with a modified 𝑡-test, with 𝑃<.05. Table shows that 7 of the 12 patients were not impaired on any of the imagery tasks. One patient was impaired on the visual imagery task selectively, 2 patients were impaired on implicit motor and visual imagery simultaneously, and 2 patients were impaired on implicit motor imagery selectively.

	Implicit motor imagery	Visual imagery	Explicit motor imagery
Controls	89.5 (6.8)	90.3 (10.6)	7.5 (2.0)
Patients
No impairment of imagery
1	96	99	10
4	81	95	8
5	85	94	6
6	83	85	7
8	84	90	8
10	77	73	7
11	83	97	8
Selective impairment of visual imagery
12	73	57	6
Impairment of motor imagery
Selectively
3	47	70	6
9	53	93	0
Simultaneous with visual imagery
2	52	56	6
7	57	62	0