(b).

Item	n	Name	Attention	Language	Abstract ability	Delayed memory	Directional force
Left	33	2.56 ± 0.40	4.11 ± 0.72	2.23 ± 0.42	1.65 ± 0.40	3.28 ± 0.62	4.01 ± 0.68
Right	32	2.86 ± 0.51#	4.41 ± 0.71	2.51 ± 0.43	1.41 ± 0.51∗	3.81 ± 0.71	4.78 ± 0.72∗
Bilateral	33	2.61 ± 0.38	4.43 ± 0.73	2.55 ± 0.45	1.88 ± 0.58	4.27 ± 0.81	4.42 ± 0.69

MMSE: Mini-Mental State Examination. MoCA: Montreal Cognitive Assessment. Compared with the left carotid stenosis group, ^#P < 0.05; compared with the bilateral carotid stenosis group, ^∗P < 0.05.