Abstract:Objective To observe the effect of cerebellar fastigial nucleus stimulation (FNS) on the cognitive function of patients with cerebral microbleeds (CMB). Methods A total of 35 CMB cases were randomly divided into observation group and control group. All the patients were given routine medical treatment, and the observation group was further treated with FNS. Montreal cognitive assessment (MoCA) scale was used to evaluate cognitive function of all the patients before and after 15 days' treatment, and MRI susceptibility-weighted imaging was used to detect CMB lesions. Results Before and after FNS treatment,there was no significant difference in the amount of CMB lesions in the observation group (P > 0.05). After the treatment, there was no significant difference in the amount of CMB lesions between the observation group and the control group (P > 0.05); there were no significant differences in the scores of 8 cognitive sub-items in MoCA scale and the total score in the control group before and after medical treatment (P > 0.05). The scores of 8 cognitive sub-items in MoCA scale and the total score in the observation group after FNS treatment were significantly higher than those before FNS treatment (P < 0.05). Meanwhile, the scores of 8 cognitive subitems in MoCA scale and the total score in the observation group after the treatment were significantly higher than those in the control group (P < 0.05). Conclusions FNS can improve the cognitive function in patients with CMB as a safe treatment, which may provide an auxiliary one for patients with CMB cognitive impairment.