Characteristics of visual conduction under Top-down perceptual processing / 国际眼科杂志(Guoji Yanke Zazhi)
International Eye Science
;
(12): 742-744, 2021.
Article
in Chinese
| WPRIM
| ID: wpr-873884
ABSTRACT
@#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.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
International Eye Science
Year:
2021
Type:
Article
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