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My general research area is visual perception. So far I have concentrated on two main areas: categorical colour perception and flexible spatial frequency processing. Although these two areas seem quite different to each other, there is one main theme: cognitive penetrability of visual perception. Cognitive penetrability of vision means the degree to which, low-level (basic) mechanisms of visual perception can be influenced (penetrated) by high-level mechanisms of cognition such as language, learning, categorisation, knowledge, and expectations. Evidence suggests that even low-level (early) vision may indeed be cognitively penetrable. In other words, perceptual systems may not be passive mechanisms that send information in a one-way traffic up to the higher levels (later stages) of processing in the brain. Rather, they receive information from those higher levels too (two-way traffic), and actively collect information from the world according to the needs and demands of the organism. For more information on my resaerch in each of these two specific areas of vision, follow the links below.
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