Objective:To explore the correlation between visual spatial attention ability and static balance function in stroke patients with different hemiplegic sides based on different reference frames.Method:Thirty-eight patients with stroke were divided into left hemiplegia group and right hemiplegia group ac-cording to hemiplegic side.All patients completed the assessments in cognition,balance and visual spatial at-tention function.Visual spatial attention ability was assessed through response accuracy and reaction time in egocentric and allocentric reference frame,and the efficiency score is accuracy rate divided by reaction time.The differences of cognitive function,balance function and visual spatial attention ability between the two groups were analyzed.The correction between the results of cognitive function,visual spatial attention function and balance function were analyzed.Result:There was no significant difference between the two groups in terms of sex,age,course of disease,Brunnstrom stage,stroke type,location of the lesion,MoCA and digit span task score(P＞0.05),but there were significant differences in the score of A section of trial making test(P＜0.05).Significant differences were found between the two groups in the average movement speed and length during closed-eye conditions(P＜0.05).There were significant differences in the accuracy rate in egocentric test,the reaction time and efficiency score in allocentirc test between the two groups(P＜0.05).The reaction time and the efficiency scores in ego-centric and allocentric tests were positively related to the static balance parameters in right hemiplegic stroke patients(P＜0.05).However,there was no significant correlation between cognitive function,visual spatial at-tention ability and static balance function in patients with left hemiplegia(P＞0.05).Conclusion:The balance function and visual spatial attention ability of patients with right hemiplegia patients were better than those with left hemiplegia.There is a positive correlation between static balance function and egocentric visual spatial attention ability in patients with right hemiplegia.All these findings provide an impor-tant theoretical basis for stroke patients in balance rehabilitation.

Objective:To explore the correlation between visual spatial attention ability and static balance function in stroke patients with different hemiplegic sides based on different reference frames.Method:Thirty-eight patients with stroke were divided into left hemiplegia group and right hemiplegia group ac-cording to hemiplegic side.All patients completed the assessments in cognition,balance and visual spatial at-tention function.Visual spatial attention ability was assessed through response accuracy and reaction time in egocentric and allocentric reference frame,and the efficiency score is accuracy rate divided by reaction time.The differences of cognitive function,balance function and visual spatial attention ability between the two groups were analyzed.The correction between the results of cognitive function,visual spatial attention function and balance function were analyzed.Result:There was no significant difference between the two groups in terms of sex,age,course of disease,Brunnstrom stage,stroke type,location of the lesion,MoCA and digit span task score(P＞0.05),but there were significant differences in the score of A section of trial making test(P＜0.05).Significant differences were found between the two groups in the average movement speed and length during closed-eye conditions(P＜0.05).There were significant differences in the accuracy rate in egocentric test,the reaction time and efficiency score in allocentirc test between the two groups(P＜0.05).The reaction time and the efficiency scores in ego-centric and allocentric tests were positively related to the static balance parameters in right hemiplegic stroke patients(P＜0.05).However,there was no significant correlation between cognitive function,visual spatial at-tention ability and static balance function in patients with left hemiplegia(P＞0.05).Conclusion:The balance function and visual spatial attention ability of patients with right hemiplegia patients were better than those with left hemiplegia.There is a positive correlation between static balance function and egocentric visual spatial attention ability in patients with right hemiplegia.All these findings provide an impor-tant theoretical basis for stroke patients in balance rehabilitation.

Norovirus, as one of the main pathogens causing non-bacterial gastroenteritis, can cause serious public health problems and economic losses around the world. In recent years, the outbreaks caused by the virus in China are on the rise. Human Norovirus (HuNoV) can hardly be cultivated in-vitro. The nucleic acid detection method (such as RT-qPCR) has the highest sensitivity and specificity, but it was not established that the correlation between the detected viral genome and viral infectivity, which leads to inaccurate judgment of safety risks. Here, the in-vitro and in-vivo culture models, viral genome integrity and capsid protein integrity were cut into three aspects. The research progress and characteristics of infectious Norovirus identification technology in recent years were reviewed and discussed, and the future development trend of this technology was prospected. The aim is to further improve the accuracy of Norovirus quantitative detection and provide a theoretical basis for its application in the field of food safety testing.