4 posts · 5,152 views
A blog about vision: cognitive, computational, biological, neural...
File under: “it turns out it’s more complicated than that.” Many deaf people have better-than-average vision and many studies have shown that the parts of the brain that would be used for hearing are helping out with vision instead. New work from a joint team from universities in Italy and France demonstrates that things may [...]... Read more »
Bottari, D., Caclin, A., Giard, M., & Pavani, F. (2011) Changes in Early Cortical Visual Processing Predict Enhanced Reactivity in Deaf Individuals. PLoS ONE, 6(9). DOI: 10.1371/journal.pone.0025607
Seeing what isn’t there
When we see something, our visual systems rapidly recognises its shape, colour, location and so on, and these features are then “bound” to the object, so we see a “red ball” rather than separate “redness” and “ballness”. Or that’s what usually happens. Work by Otto, Ögmen, and Herzog  uses short [...]... Read more »
Thomas Otto. (2006) The flight path of the phoenix—The visible trace of invisible elements in human vision. Journal of Vision, 6(10), 1079-1086. DOI/10.1167/6.10.7
Yang Liu. (2008) Disparity statistics in natural scenes. Journal of Vision, 8(11), 1-14. DOI/10.1167/8.11.19
A (fairly) new paper by Graham Martin et al. in the wonderful PLoS ONE discusses kiwi and their eyes. Coming from (nearly) the opposite side of the world, I am (was) embarrassingly ignorant about kiwi. I knew they were large and flightless birds from New Zealand, but that was about it. (I even thought the [...]... Read more »
Graham Martin, Kerry-Jayne Wilson, J Martin Wild, Stuart Parsons, M Fabiana Kubke, Jeremy Corfield, & Andrew Iwaniuk. (2007) Kiwi Forego Vision in the Guidance of Their Nocturnal Activities. PLoS ONE, 2(2). DOI: 10.1371/journal.pone.0000198
Suppose that one type of eye is better at detecting information about the world than another. Then it will allow its owner to respond more usefully to the visual world, whether it’s finding food, avoiding predators and harsh conditions, monitoring its own movement, or whatever. As always, natural selection works at a local level, local [...]... Read more »
Dan-E Nilsson, & Susanne Pelger. (1994) A Pessimistic Estimate of the Time Required for an Eye to Evolve. Proceedings of the Royal Society B: Biological Sciences, 256(1345), 53-58. DOI: 10.1098/rspb.1994.0048
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