This video by brusspup on Youtube shows a series of moving white circles that travel in straight lines… the trick is the illusion of circular motion through relative timing of the linear motion. Well done.
NPR has a wonderful story of childhood friends, Henry Wanyoike and Joseph Kibunja who started running together as children 30 years ago and are still running in competition today. That is a remarkable story enough, but even more compelling is that Wanyoike is blind from a stroke that cost him his sight and Kibunja is his running guide.
It is a wonderful story and well worth the read. While there, also be sure to stop by the Henry Wanyoike Foundation website, designed to help bring young people together through sport.
There is a short but fun post over on Knowing Neurons that looks to be part of a series on color and how color is perceived. Its got some great visuals by the guest author Raz and I can’t wait to see what she has to say about oppositional antagonism.
There is an article in Real Simple along with photography by the amazing portrait photographer Peter Hapak of seeing impaired mothers, their children and guide dogs. The article is well worth reading and gives one some insight into the challenges and difficulties facing vision impaired moms and is an inspiring read for those of us who’s work and research is in blinding diseases.
One of the common questions people have is what it means to be colorblind since that is one of the common visual deficit manifestations that they can relate to. Color blindness (pretty good article on Wikipedia there) is very common and just about everyone knows someone who does not see the world quite like they do because of a form of color blindness.
I have a post over on Jonesblog that renders some natural scenes as protanopes, deuteranopes and tritanopes would see them and talks about how to simulate your own images for various forms of color blindness.
Tommy Edison, The Blind Film Critic has been blind since birth. In this sort video from his Youtube Film Channel, he discusses the concept of color to a person who has never before seen. Tommy also has lots of additional videos that give some insight into how the blind navigate through life. For those of us who study vision or are interested in vision, Tommy’s channel is well worth dropping by.
A friend of mine (and amazing landscape/nature photographer) Jim Goldsteinsent me a Tweet and pointed out simmering new conjecture in the art community that Vincent Van Gogh might have been color blind, specifically a protanope. I seem to remember some discussion of this years ago, particularly given that one can rather nicely simulate both protanopia and deuteranopia in Adobe Photoshop with built in filters (View>Proof Setup>Protanopia/Deuteranopia). However, the current speculation comes about from Kazunori Asada who wrote up a Tumbler blog entry here describing how he came about his idea and a subsequent app he wrote to simulate color vision and color blindness. The image above shows Kazunori Asada’s approximation of Van Gogh’s Starry Night and Flowering Garden with Path with the original on the left and the Asada transform approximation on the right.
Vision Research EU has announced the winners of this years Picture Competition. Winners come from around the world including amazingly beautiful images from Amanda Barber, Nicole Körber, Kasi Sandhanam, Kim Baxter, Mike Francke, Tobias Duncker, Young Joon Jo, Jyan L Crayton, Graham Cater and Reenu Varaiya. Click the link and check them out.
Like we did last year, I’ve uploaded a bunch of snapshots from ARVO from around the meeting and from events in the evening including the Moran Eye Center social. I’m out of town right now, so rather than resize all the photos and upload to Webvision, you can see all of them over on Jonesblog by clicking here.
This is an interesting study in PLoS One examining the involvement of melatonin in the retina, particularly in the survival of retinal neurons through aging studies in CH3-f+/+ mice, a melatonin proficient mouse strain. As expected, certain physiological measures (a and b waves) are lost during aging, and in particular, the daily circadian rhythms of those measures. However, the authors, Kenkichi Baba, Francesca Mazzoni, Sharon Owino, Susana Contreras-Alcantara, Enrica Strettoi and Gianluca Tosini did something really interesting and added exogenous melatonin to their assay and concluded that responsiveness of exogenous melatonin is also reduced during aging.
A recent paper by Dan-Eric Nilsson, Eric J. Warrant, Sönke Johnsen, Roger Hanlon and Nadav Shashar reports on the eyes of some of the most mysterious of creatures, Architeuthis and Mesonychoteuthis, the giant and colossal deep sea squid respectively. We here at Webvision love all things retina and would deeply love to get our hands on the retinas of these creatures to perform CMP and explore them through connectomics, to understand how the retinas are constructed, how they evolved and how different/similar they are to other organisms. For now, we have to satisfy ourselves with interesting papers from colleagues on descriptions of eyes from squid the authors have examined as well as their theories for how the squid use their eyes to track prey and predators by seeing the bioluminescence that follows objects as they transit benthic waters.