What Determines Contrast Sensitivity: An External Noise StudyAcross Spatial Frequencies?

• 作 者: Chang-BingHuang;GeChen;FangfangYan;PanZhang;
• 机 构: Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences 4A, DATUN
• 出 处: 武汉市第五届科学年会心理学分会场:中国心理学会普通心理与实验心理分会代表大会暨2012年学术年会
• 发表日期: 2012年期

　　Contrast sensitivity (CS) plays a fundamental role in human vision.Contrast sensitivity function (CSF) describes how contrast sensitivity changes with spatial frequency and is believed to characterize our visual ability more precisely.Although CSF testisroutinely used in clinical practice and widely applied in computational vision,what determines CS at different spatial frequencies remained elusive.In the current study,we applied an external noise method to probe the limiting factors underlying contrast sensitivity at different spatial frequencies within anobserver model framework.