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Michael Bach
403 followers -
Personal interests: Life. Professional interests: All things vision.
Personal interests: Life. Professional interests: All things vision.

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Opposite Rotation in Kitaoka's “Rotating Snakes Illusion”

Typically I would not advertise my scientific publications here, but I'm particulary proud of this paper “Rotating Snakes #Illusion—Quantitative Analysis Reveals a Region in Luminance Space With Opposite Illusory Rotation” (Lea Atala-Gérard & Michael Bach, 2017): https://doi.org/10.1177/2041669517691779

The standard rule of thumb is: the disk rotates from the black part over the darker grey towards the white part, as seen in the right disk (clockwise). The left one, although having the same black–dark grey–white–light grey order, rotates ever so slightly the other way. This is only a wee bit of rotation, but was totally unexpected. The luminance effect can be interactively explored here
http://www.michaelbach.de/ot/mot-snakesLum/
One needs to do eye movement beneath the figures to perceive the effect – steady fixation leads to steady disks. For me the rotation of the right disk is so strong that I need to cover it to see the occasional counter-clockwise rotation of the left disk.

We also, in the spirit of open data, have published our full data set on figshare. The data demonstrates that there is variability between observers. By using a nulling task (physical counter-rotation to make it seem stationary), quantification of effect strength was highly reproducible.
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President Trump: The Inauguration (new Twilight episode)
2017-01-20, 4pm, BBC One/ STV
TV review by Damien Love in http://heraldscotland.com

“After a long absence, The Twilight Zone returns with one of the most ambitious, expensive and controversial productions in broadcast history. Sci-fi writers have dabbled often with alternative history stories – among the most common is the “What If The Nazis Had Won The Second World War” setting – but this huge interactive virtual reality project, which will unfold on TV, in the press, and on Twitter over the next four years, sets out to build an ongoing alternative present. The story begins in a nightmarish version of 2017 in which huge sections of the US electorate have somehow been duped into voting to make Donald Trump president. It sounds far-fetched, and it is, but as it goes on it becomes more and more chillingly plausible. Today’s feature-length opener concentrates on the gaudy inauguration of President Trump, and the stirrings of protest and despair surrounding the ceremony, while pundits speculate gravely on what lies ahead. It’s a flawed piece, but a disturbing glimpse of the horrors we could stumble into, if we’re not careful.”

To be on the safe side (I'm not distributing fake news): This a satire, and a hilarious (or horrible?) one at that! Picked up and made popular on twitter.

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Seasonal Illusion – “White Xmas”
In my collection of #illusion I added a variant of White's Illusion appropriate for this time of the year
http://michaelbach.de/ot/col-whiteXmas/

Enjoy – whatever sad events currently dominate the world…
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Ferien in Lanzarote
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11/12/2016
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Open Access for viewing
Scientific publishers Springer and Nature have fused recently. The results are absurd & ridiculous new author disclaimer notes (another topic) and an interesting "content sharing" model. An example here
http://rdcu.be/mU8j
The above link gives you full free reading access to the paper. While you cannot download it, it's a major boon IMHO, even if not really Open Access. [Probably major data harvesting behind it too.] Here
http://authors.springernature.com/share
you can enter the DOI of your paper (if published by Springer-Nature), and if you're lucky get such a sharing link. Currently the choice appears limited, possibly they'll extend this to earlier publications. So far I've found only 3 of my papers from this year there.

Sprinter-Nature write “There are no restrictions on the number of people you may share this link with, how many times they can view the linked article or where you can post the link online.” Wow, nice!
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I couldn't agree more…

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Freiburg Vision Test “FrACT“ updated

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Wakeboarding – possibly for the last time this year
Inherent beauty of water sprays and a (weak) rainbow.
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22/10/2016
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Bodo Wartke – Nicht in meinem Namen

Großartiges Lied von Bodo, passt in diese Zeit. Ich find ihn eh schon seit Jahrzehnten toll, hab ihn auch mal ausführlich getroffen (wir fuhren beide zum Snowboarden), und hier ist er wieder mal phantastisch.

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Vanishing Dots or Twelve black dots illusion
A nice #illusion from 2000 is making the rounds… Here's my interactive version
http://michaelbach.de/ot/lum-NinioDots/
Nice and strong.
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