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   Bruce Lawson ✅ (quiet time) (brucelawson@social.vivaldi.net)'s status on Saturday, 13-Apr-2024 05:27:17 JST Bruce Lawson ✅ (quiet time)

   Enjoy these two concentric circles

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     Peter Krefting (nafmo@social.vivaldi.net)'s status on Saturday, 13-Apr-2024 05:27:16 JST Peter Krefting

     in reply to

     @brucelawson My eyes hurt!

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     Bruce Lawson ✅ (quiet time) (brucelawson@social.vivaldi.net)'s status on Sunday, 14-Apr-2024 17:50:38 JST Bruce Lawson ✅ (quiet time)

     in reply to

     • Tony Vladusich

     @TonyVladusich arrgghh

     clacke likes this.
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     Tony Vladusich (tonyvladusich@mathstodon.xyz)'s status on Sunday, 14-Apr-2024 17:50:39 JST Tony Vladusich

     in reply to

     @brucelawson

     There is something deeply fundamental about the way the visual system parses images with dark and light components. This example is particularly compelling. I feel certain extant models of visual perception are missing some fundamental idea involving opposite polarity edges and how they are combined into representations. Here’s another example from my own research some years back. The rings seem against high contrast backgrounds seem lustrous and appear to shimmer.

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     josh 🛸 (josh@ms.phocks.org)'s status on Sunday, 14-Apr-2024 17:54:03 JST josh 🛸

     in reply to

     @brucelawson i do not enjoy them thanks

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     Tony Vladusich (tonyvladusich@mathstodon.xyz)'s status on Sunday, 14-Apr-2024 17:54:08 JST Tony Vladusich

     in reply to

     • Tom Bellin :picardfacepalm:
     • sbszine

     @tob @sbszine @brucelawson

     Some folks don’t see simultaneous contrast. You have a very interesting visual system!

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     Tom Bellin :picardfacepalm: (tob@hachyderm.io)'s status on Sunday, 14-Apr-2024 17:54:10 JST Tom Bellin :picardfacepalm:

     in reply to

     • Tony Vladusich
     • sbszine

     @TonyVladusich @sbszine @brucelawson no maybe it's my phone

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     Tony Vladusich (tonyvladusich@mathstodon.xyz)'s status on Sunday, 14-Apr-2024 17:54:11 JST Tony Vladusich

     in reply to

     • Tom Bellin :picardfacepalm:
     • sbszine

     @tob @sbszine @brucelawson

     See a doctor immediately! Jk. Do you see simultaneous contrast in this display? The disk against the dark surround should look lighter than the one against the light surround.

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     Tom Bellin :picardfacepalm: (tob@hachyderm.io)'s status on Sunday, 14-Apr-2024 17:54:12 JST Tom Bellin :picardfacepalm:

     in reply to

     • Tony Vladusich
     • sbszine

     @TonyVladusich @sbszine @brucelawson does it mean anything that I do not see the shimmering effect you're describing?

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     Tony Vladusich (tonyvladusich@mathstodon.xyz)'s status on Sunday, 14-Apr-2024 17:54:13 JST Tony Vladusich

     in reply to

     • sbszine

     @sbszine @brucelawson

     No not animated. It’s a perceptual effect called scintillation.

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     sbszine (sbszine@dice.camp)'s status on Sunday, 14-Apr-2024 17:54:14 JST sbszine

     in reply to

     • Tony Vladusich

     @brucelawson @TonyVladusich Is the one on the right animated or does my brain make the background suddenly and dramatically change colour? Aaargh.