Yildirim, F. Z., Coates, D. R., & Sayim, B. (2021). Hidden by bias: How standard psychophysical procedures conceal unbiased visual appearance. Scientific Reports11, 4095 [open access]

Hirsch. T., Haiduk, M., & Sayim, B. (under review). Raphael’s ‘imperfect’ viol – a question of perspective.

Melnik, N., Coates, D. R., & Sayim, B. (in revision). Geometrically Restricted Image Descriptors: A method to capture the appearance of shape.

Taylor, H., & Sayim, B. (in revision). ‘Redundant Letters Lost: Redundancy Masking and the Identity Crowding Debate.


Doerig, A., Schmittwilken, L., Sayim, B. Manassi, M., Herzog, M. H. (2020). Capsule networks as recurrent models of grouping and segmentation PLOS Computational Biology16(7), e1008017. [online]

Yildirim, F. Z., Coates, D. R., & Sayim, B. (2020). Redundancy masking: The loss of repeated items in crowded peripheral vision. Journal of Vision. 2020. 20(4): 14. [open access]

Melnik, N., Coates, D. R., & Sayim, B (2020). Emergent features break the rules of crowding. Scientific Reports10(1), 1-10. [online]


Sayim, B., & Taylor, H. (2019). Letters lost: Capturing appearance in crowded peripheral vision reveals a new kind of masking. Psychological Science30(7), 1082-1086. [online]

Rummens K, & Sayim B (2019). Disrupting uniformity: Feature contrasts that reduce crowding interfere with peripheral word recognition. Vision Research161, 25-35. [online]


Melnik, N., Coates, D. R., & Sayim, B. (2018). Emergent features in the crowding zone: When target-flanker grouping surmounts crowding. Journal of Vision. 2018; 18(9):19 [open access]

Taylor, H., & Sayim, B. (2018). Crowding, attention and consciousness: in support of the inference hypothesis. Mind Lang. 2018; 1-17. [online]

Sayim, B., & Franke, I. (2018). Towards a phenomenology of the unknown. Berlin, Schering Foundation. [online]


Sayim, B., Wagemans, J. (2017). Appearance changes and error distributions in crowding revealed by drawings. Journal of Vision. 2017(17):8. [open access]

Coates, D. R., Wagemans, J., Sayim, B. (2017). Diagnosing the visual periphery: using the rey-osterrieth complex figure test to evaluate peripheral visual function. I-Perception[open access]

Greenwood, J. A., Szinte, M., Sayim, B., & Cavanagh, P. (2017). Variations in crowding, saccadic precision, and spatial localization reveal the shared topology of spatial vision. Proceedings of the National Academy of Sciences114(17), E3573-E3582. [open access]

Ekroll, V., Sayim, B., & Wagemans, J. (2017). The other side of magic: The psychology of perceiving hidden things. Perspectives on Psychological Science12(1), 91-106. [online]


Herzog MH, Sayim B, Manassi M, Chicherov V (2016). What crowds in crowding? Journal of Vision, September 2016, Vol.16, 25. doi:10.1167/16.11.25.PublicationsPublications

Ekroll V, Sayim B, van der Hallen R, Wagemans J (2016). Illusory visual completion of an object’s invisible backside can make your finger feel shorter. Current Biology 26, no. 8 (April 25, 2016): 1029–33.PublicationsPublications

Coates DR, Chung STL. Crowding in the S-cone pathway. Vision Research April 8, 2016. doi:10.1016/j.visres.2016.03.007.PublicationsPublications


Overvliet KE1Sayim B1 (2015). Perceptual grouping determines haptic contextual modulation. Vision Research. Available online, paper in press. [1 joint first author]PublicationsPublications

Sayim B, Myin E, Van Uytven T (2015). Prior knowledge modulates peripheral color appearance. Proceedings of the International Colour Association (AIC), Tokyo Midterm meeting, 2015, 1147-1152.PublicationsPublications

Herzog MH, Sayim B, Chicherov V, Manassi M (2015). Crowding, grouping, and object recognition: a matter of appearance. Journal of Vision, 15(6):5, 1–18. PublicationsPublications


Sayim B, Greenwood JG, Cavanagh P (2014). Foveal target repetitions reduce crowding. Journal of Vision.14 (6):4, 1-12. PublicationsPublications

Greenwood JG, Sayim B, Cavanagh P (2014). Crowding is reduced by onset transients in the target object (but not in the flankers). Journal of Vision, 14 (6):2, 1-21.PublicationsPublications

Sayim B, Manassi M, Herzog MH (2014). How color, regularity, and Gestalt determine backward masking, Journal of Vision, 14(7):8, 1-11. PublicationsPublications

Coates DR, Chung STL. Changes across the psychometric function following perceptual learning of an RSVP reading task. Frontiers in Psychology (2014) Dec 23; 5:1434. doi: 10.3389/fpsyg.2014.01434PublicationsPublications

Coates DR, Levi DM. Contour interaction in foveal vision: A response to Siderov, Waugh, and Bedell (2013) Vision Research 96 (2014):140-144. doi: 10.1016/j.visres.2013.10.016PublicationsPublications


Ekroll V, Sayim B, Wagemans J (2013). Against better knowledge: The magical force of amodal volume completion. i-perception, 4, 511-515. PublicationsPublications

Manassi M, Sayim B, Herzog MH (2013). When crowding of crowding leads to uncrowding. Journal of Vision. 13(13):10, 1–10. PublicationsPublications

Sayim B, Cavanagh P (2013). Grouping and Crowding Affect Target Appearance over Different Spatial Scales. PLoS ONE 8(8): e71188. PublicationsPublications

Coates DR, Chin JM, Chung STL. Factors affecting crowded acuity: eccentricity and contrast. Optometry & Vision Science (2013) Jul;90(7):628-38. doi: 10.1097/OPX.0b013e31829908a4PublicationsPublications


Manassi M, Sayim B, Herzog MH (2012). Grouping, pooling, and when bigger is better in visual crowding. Journal of Vision, 12(10):13, 1–14. PublicationsPublications


Sayim B, Cavanagh P (2011). What line drawings reveal about the visual brain. Front. Hum. Neurosci. 5:118. PublicationsPublications

Sayim B, Cavanagh P (2011). The Art of Transparency. i-Perception, 2(7), 679-696. PublicationsPublications

Sayim B, Wesheimer G, Herzog MH (2011). Quantifying target conspicuity in contextual modulation by visual search. Journal of Vision, 11(1):6, 1-11. PublicationsPublications


Sayim B, Grubert A, Herzog MH, Krummenacher J (2010). Display probability modulates attentional capture by onset distractors. Journal of Vision, 10(3):10, 1-8. PublicationsPublications

Sayim B, Westheimer G, Herzog MH (2010). Gestalt Factors Modulate Basic Spatial Vision. Psychological Science, 21(5):641-4.PublicationsPublications

2009 (and earlier)

Saarela TP, Sayim B, Westheimer G, Herzog MH (2009). Global stimulus configuration modulates crowding. Journal of Vision, 9(2):5, 1-11. PublicationsPublications

Sayim B, Westheimer G, Herzog MH (2008). Contrast polarity, chromaticity, and stereoscopic depth modulate contextual interactions in vernier acuity. Journal of Vision, 8(8):12, 1-9. PublicationsPublications

Sayim B, Jameson KA, Alvarado N, Szeszel M (2005). Semantic and perceptual representations of color: Evidence of a shared color naming function. Journal of Cognition and Culture, 5, 165-220.