Advertisement

Attention, Perception, & Psychophysics

, Volume 76, Issue 1, pp 5–10 | Cite as

Shape-assimilation effect: retrospective distortion of visual shapes

  • Fuminori Ono
  • Katsumi Watanabe
Article

Abstract

A brief visual stimulus distorts the perceived shape of a subsequent visual stimulus as being dissimilar to the shape of a previous stimulus (shape-contrast effect). In this study, we presented a visual stimulus after a to-be-estimated target stimulus and found that the perceived shape of the target stimulus appeared to be similar to the shape of the following stimulus (shape-assimilation effect). The assimilation effect occurred even when the following stimulus was presented at positions different from that of the target stimulus, indicating that the shape-assimilation effect is a nonretinotopic distortion. The results suggest that the preceding and succeeding stimuli differentially modulate the perceived shape of a briefly presented stimulus.

Keywords

Shape perception Shape-assimilation effect Shape-contrast effect 

Notes

Acknowledgments

This research was supported by Grants-in-Aid for Scientific Research (23240034, 23730694) from the Japan Science and Technology Agency and the Ministry of Education, Culture, Sports, Science and Technology.

References

  1. Anderson, N. D., Habak, C., Wilkinson, F., & Wilson, H. R. (2007). Evaluating shape after-effects with radial frequency patterns. Vision Research, 47, 298–308.PubMedCrossRefGoogle Scholar
  2. Au, R. K. C., Ono, F., & Watanabe, K. (2013). Spatial distortion induced by imperceptible visual stimuli. Consciousness and Cognition, 22(1), 99–110.PubMedCrossRefGoogle Scholar
  3. Bachmann, T. (1994). Psychophysiology of visual masking: The fine structure of conscious experience. Commack, NY: Nova Science.Google Scholar
  4. Breitmeyer, B. G. (1984). Visual masking: An integrative approach. New York, NY: Oxford University Press.Google Scholar
  5. Breitmeyer, B. G., & Öğmen, H. (2006). Visual masking: Time slices through conscious and unconscious vision. New York, NY: Oxford University Press.CrossRefGoogle Scholar
  6. Chien, S., Ono, F., & Watanabe, K. (2011). Mislocalization of visual stimuli: Independent effects of static and dynamic attention. PLoS ONE, 6(12), e28371.PubMedCentralPubMedCrossRefGoogle Scholar
  7. Choi, H., & Scholl, B. J. (2006). Perceiving causality after the fact: Postdiction in the temporal dynamics of causal perception. Perception, 35, 385–399.PubMedCrossRefGoogle Scholar
  8. Desimone, R., & Schein, S. J. (1987). Visual properties of neurons in area V4 of the macaque: Sensitivity to stimulus form. Journal of Neurophysiology, 57, 835–868.PubMedGoogle Scholar
  9. Dickinson, J. E., Han, L., Bell, J., & Badcock, D. R. (2010). Local motion effects on form in radial frequency patterns. Journal of Vision, 10(3), 1–15.PubMedCrossRefGoogle Scholar
  10. Eagleman, D. M., & Sejnowski, T. J. (2000). Motion integration and postdiction in visual awareness. Science, 287, 2036–2038.PubMedCrossRefGoogle Scholar
  11. Fortenbaugh, F. C., Prinzmetal, W., & Robertson, L. C. (2011). Rapid changes in visual-spatial attention distort object shape. Psychological Bulletin Review, 18, 287–294.CrossRefGoogle Scholar
  12. Fuchs, A. F. (1967). Saccadic and smooth pursuit eye movements in the monkey. The Journal of Physiology, 191, 609–631.PubMedGoogle Scholar
  13. Kayaert, G., Biederman, I., & Vogels, R. (2003). Shape tuning in macaque inferior temporal cortex. Journal of Neuroscience, 23, 3016–3027.PubMedGoogle Scholar
  14. Kolers, P. A., & von Grünau, M. (1976). Shape and color in apparent motion. Vision Research, 16, 329–335.PubMedCrossRefGoogle Scholar
  15. Ono, F., & Watanabe, K. (2011). Attention can retrospectively distort visual space. Psychological Science, 22(4), 472–477.PubMedCrossRefGoogle Scholar
  16. Prinz, W. (1979). Integration of information in visual search. Quarterly Journal of Experimental Psychology, 31, 287–304.PubMedCrossRefGoogle Scholar
  17. Suzuki, S. (2005). High-level pattern coding revealed by brief shape aftereffects. In C. Clifford & G. Rhodes (Eds.), Fitting the mind to the world: Adaptation and aftereffects in high-level vision (pp. 135–172). New York, NY: Oxford University Press.CrossRefGoogle Scholar
  18. Suzuki, S., & Cavanagh, P. (1998). A shape-contrast effect for briefly presented stimuli. Journal of Experimental Psychology: Human Perception and Performance, 24, 1315–1341.PubMedGoogle Scholar
  19. Sweeny, T. D., Grabowecky, M., & Suzuki, S. (2011). Simultaneous shape repulsion and global assimilation in the perception of aspect ratio. Journal of Vision, 11(1), 1–16.CrossRefGoogle Scholar
  20. Visser, T. A. W., Bischof, W. F., & Di Lollo, V. (1999). Attentional switching in spatial and nonspatial domains: evidence from the attentional blink. Psychological Bulletin, 125, 458–469.CrossRefGoogle Scholar

Copyright information

© Psychonomic Society, Inc. 2013

Authors and Affiliations

  1. 1.Yamaguchi UniversityYamaguchiJapan
  2. 2.The University of TokyoTokyoJapan
  3. 3.Faculty of EducationYamaguchi UniversityYamaguchi-shiJapan

Personalised recommendations