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Texture Density Adaptation and the Perceived Numerosity and Distribution of Texture

Texture Density Adaptation and the Perceived Numerosity and Distribution of Texture. Frank H. Durgin (1995) Hunjae Lee, VCC Lab 2009-11-11. Introduction. When we see the complex texture - Detail is lost, abstract summary lefts, then what is it?

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Texture Density Adaptation and the Perceived Numerosity and Distribution of Texture

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  1. Texture Density Adaptation and the Perceived Numerosity andDistribution of Texture Frank H. Durgin (1995) Hunjae Lee, VCC Lab 2009-11-11

  2. Introduction • When we see the complex texture - Detail is lost, abstract summary lefts, then what is it? • What do we see when we look at scatter-dot texture? • Numerosity (number of dots) • Cluster (from texture density)

  3. Basic Procedure (Visual after effects) • Demo

  4. Reviews and Prediction • Occupancy Model (Allik & Tuulmets, 1991) • Numerosity and Density (Barlow, 1978) • Prediction • High density -> Affect on perceived numerosity Not much on the cluster • Low density -> Slight distortion at numerosity Large change in cluster R

  5. Experiment 1 and Results

  6. Experiment 2 And Results

  7. Problem of Occupancy Model

  8. Simulation of Occupancy model

  9. Simulation of Occupancy model

  10. Conclusion and Discussion • The effects of adaptation on numerosity and clustering judgments appear to be range dependent and reciprocal. • In Occupancy model, R must vary with texture density, (density information must be presupposed by the model) • Why does the system not use the smallest R? - for numerosity , for cluster…

  11. Numerical Cognition :Reading Numbers from the Brain Roi Cohen Kadosh and Vincent Walsh 13, October (2009)

  12. They sum up Eger et al (2009) • Eger et al (2009). Deciphering Cortical Number Coding from Human Brain Activity Patterns. • Wrap up and some opinions

  13. Overview of Experimental Design

  14. Summary

  15. Summary

  16. Discussion • So, Durgin on the corner? • Oakyoon, What was the problem of this experiment (you mentioned at lab meeting, 21stOct) • Any idea about number, number, magnitude…

  17. Thank you • Again, please say something ! 

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