【摘要】 目的探讨视觉模式掩蔽的感觉记忆机制。方法使用微持续、微间隔方法,调节刺激物的显示屏数,根据目标的对比度变化来判定掩蔽效应的强弱。结果掩蔽物的显示屏数增加时,掩蔽效应加强;目标的显示屏数以及ISI的屏数增加时,掩蔽效应逐渐减弱。结论掩蔽现象的产生起源于感觉记忆的衰减与叠加,同时注意对模式掩蔽也有显著影响。更多还原

【Abstract】 Objective Probe into the iconic memory mechanism in visual pattern masking.Methods Micro-persistence and interval process,modulate the displaying screen number of the stimulators to determine the strength of masking effect by the contrast of object.Results Masking effect strengthening with the increasing screen number of the masks,while declined with the increasing screen number of objects and ISI. Conclusion The results indicate that masking effect derived from the superposition and attenuation of iconic memory,attention also has a predominant effect to the visual pattern masking.更多还原