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@#AIM: To study the visual efficiency and characteristics of Top-down perceptual pathway in children.<p>METHODS: Totally 26 children volunteers in the outpatient department from January to June 2020 were selected. We adopted the photos of children's self-face as the Top-down perceptive fixation point pictures. The N75 time, P100 peak time, P100 amplitude and P100 repolarization time were recorded by graphic visual evoked potential(PVEP)examination.<p>RESULTS: Different visual perception pathway had no significant effect on the latency of N75, while different spatial frequencies have a significant effect on the N75 time. The latency of N75 was prolonged under high frequency spatial stimulation. The interaction between visual perceptual processing path and spatial frequency has a significant effect on the peak time of P100.Under Top-down condition, the peak time of P100 was significantly shortened under high-frequency spatial stimulus. Different visual perception paths and spatial frequencies had significant effects on P100 amplitude, and Top-down perceptual processing and spatial frequencies had significant effects on the time of P100 wave repolarization, while the interaction between processing paths and spatial frequencies had no significant effects.<p>CONCLUSION:Under Top-down visual perceptual, the visual conduction velocity and visual condition efficiency are improved in children's visual process.
RESUMEN
@#Progressive reduction of visual field is the main feature in glaucoma patients.The paranoid personality and anxiety/depression characteristics of glaucona patients run through the pathogenesis and progression of the disease. The correlation between different visual fields and various cognitive components may lead to cognitive changes or different degrees of emotional disorders in the process of visual field impairment, while the emotional/psychological disorders in glaucoma patients with anxiety/depression as the main characteristics have negative effects on the range of peripheral vision and visual acuity. As a result of the interaction between body and mind, the speed and degree of visual impairment of glaucoma have characteristic changes. "Psychogenic error" or "functional error" will lead to the misjudgment of pathological damage of visual function. Attention to the interaction between mood disorders and visual field impairment in glaucoma patients has promoted the development of combined intervention strategies of body and mind on the course of glaucoma.