Refereed Journal Publications

Ozgen, E. 2004. Language, learning, and color perception. Current Directions in Psychological Science 13 (3): 95-98. View pdf

Ozgen, E; Davies, IRL. 2002. Acquisition of categorical color perception: A perceptual learning approach to the linguistic relativity hypothesis. Journal of Experimental Psychology-General 131 (4): 477-493. View pdf

Ozgen, E; Davies, IRL. 1998. Turkish color terms: tests of Berlin and Kay's theory of color universals and linguistic relativity. Linguistics 36 (5): 919-956.

Ozgen, E; Payne, HE; Sowden, PT; Schyns, PG. 2006. Retinotopic sensitisation to spatial scale: Evidence for flexible spatial frequency processing in scene perception. Vision Research, 46(6-7), 1108-1119. View pdf

Ozgen, E; Sowden, PT; Schyns, PG; Daoutis, C. 2005. Top-down attentional modulation of spatial frequency processing in scene perception. Visual Cognition 12 (6): 925-937. View pdf

Sowden, PT; Ozgen, E; Schyns, PG; Daoutis, C. 2003. Expectancy effects on spatial frequency processing. Vision Research 43 (26): 2759-2772. View pdf

Notman, LA; Sowden, PT; Ozgen, E. 2005. The nature of learned categorical perception effects: a psychophysical approach. Cognition 95 (2): B1-B14. View pdf

Pilling, M; Wiggett, A; Ozgen, E; Davies, IRL. 2003. Is color "categorical perception" really perceptual?. Memory & Cognition 31 (4): 538-551. View pdf

Work submitted or in preparation

Davies, I. R. L., Wiggett, A., Franklin, A., Ozgen, E., Pilling, M. & Wright O. Categorical Effects on Visual Search for Colour: Evidence for Pre-attentive Influences on Categorical Perception. Submitted to Visual Cognition. View pdf

Ozgen, E., & Davies, I. R. L. (2004). Language affects colour perception: comparison of Turkish and English perceptions of blue. Manuscript in preparation.

Chapter in books

Roling, P., Sowden, P. T., Davies, I. R. L., Ozgen, E. & Lawler, M. (1997). Perceptual learning in inspection tasks, in D. Harris (Ed.) Engineering Psychology and Cognitive Ergonomics Volume Two: Job Design and Product Design, Ashgate: Aldershot.  pp. 121-128

Conference Presentations

European Conference on Visual Perception (ECVP) Presentations:

Özgen, E., Davies, I. R. L., & Widdowson, G. (2004). Categorical perception of colour is flexible and language dependent. Perception, 33(supplement), 66. View pdf

Davies, I. R. L., Özgen, E., Pilling, M., & Riddett, A. (2004). The relationship between categorical perception and memory bias towards the prototype. Perception, 33(supplement), 66.

Payne, H. E., Sowden, P. T., Özgen, E., & Schyns, P. G. (2004). Retinotopic specificity of flexible spatial-frequency processing. Perception, 33(supplement), 173-174.

Özgen, E., Sowden, P. T., & Schyns, P. G. (2002). “It’s a highway – no, wait, it’s a city”: Retinal location specificity of flexible scale use. Perception, 31(supplement), 111.

Özgen, E., Sowden, P. T., & Schyns, P. G. (2001). Sensitisation to spatial scale in scene perception is specific to retinal location. Perception, 30(supplement), 6.

Sowden, P. T., Özgen, E., & Schyns, P. G. (2001). Expectancy effects are spatial frequency tuned. Perception, 30(supplement), 91.

Özgen, E., & Davies, I. R. L. (1998). Categorical effects in colour perception: cross-language differences and category learning. Perception, 27(supplement), 177.

Özgen, E., & Davies, I. R. L. (1997). Do linguistic categories affect colour perception? A comparison of English and Turkish perception of blue. Perception, 26 (supplement), 129.

Davies, I. R. L., Marley, L., Özgen, E. & Sowden, P. (1996). Perceptual learning and same-different judgements of colour. Perception, 25 (supplement), 102.

Vision Sciences Society (VSS) Meeting Presentation (Sarasota, Florida):

Özgen, E. & Davies, I. R. L. (2005). Effects of learning and language on colour categorical perception as measured by simultaneous presentation threshold estimates. Journal of Vision, 5(8), 269.

Özgen, E., Sowden, P. T., & Schyns, P. G. (2003). I WILL use the channel I want: flexible spatial scale processing. Journal of Vision, 3(9), 4.

Davies, I. R. L., Özgen, E., Pilling, M., & Wiggett, A. (2003). Categorical perception, perceptual magnet and prototype-bias: same or different phenomena? Journal of Vision, 3(9), 250

Sowden, P. T., Özgen, E., & Schyns, P. G. (2003). Tuning of expectancy effects indicates top-down attentional modulation of SF channels. Journal of Vision, 3(9), 344.

Özgen, E., Sowden, P. T., & Schyns, P. G. (2002). Flexible scale use is retinotopically specific. Journal of Vision, 2(7), 202.

Sowden, P. T., Özgen, E., & Schyns, P. G. (2002). When a plaid is not a plaid: attentional modulation of spatial frequency processing. Journal of Vision, 2(7), 283.

Research Grants Held
“Is the categorical 'perception' of colour really perceptual?” Economic and Social Research Council (UK) Project, 2005. Awarded to P. Sowden. I. Davies and E. Özgen