Accession Number : AD1042166


Title :   Do People Take Stimulus Correlations into Account in Visual Search (Open Source)


Descriptive Note : Journal Article


Corporate Author : HOUSTON UNIV TX HOUSTON United States


Personal Author(s) : Bhardwaj,Manisha ; Van den Berg,Ronald ; Ma,Wei Ji ; Josic,Kresimir


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1042166.pdf


Report Date : 10 Mar 2016


Pagination or Media Count : 16


Abstract : In laboratory visual search experiments, distractors are often statistically independent of each other. However, stimuli in more naturalistic settings are often correlated and rarely independent. Here, we examine whether human observers take stimulus correlations into account in orientation target detection. We find that they do, although probably not optimally. In particular, it seems that low distractor correlations are overestimated. Our results might contribute to bridging the gap between artificial and natural visual search tasks.


Descriptors :   maximum likelihood estimation , target detection , random variables , probabilistic models , false alarms , Covariance , decision making , normal distribution , visual perception , DATA VISUALIZATION , MENTAL PROCESSES , experimental design , BIOFEEDBACK , Luminance , correlation


Subject Categories : Psychology
      Anatomy and Physiology


Distribution Statement : APPROVED FOR PUBLIC RELEASE