The man hanging from ceiling

Scholarpedia defines inattentional blindness as "the failure to notice a fully-visible, but unexpected object because attention was engaged on another task, event, or object."

One of the classic examples of this is provided by the Invisible Gorilla experiment, in which test subjects were asked to watch a video showing a group of people passing a basketball back and forth. Asked to count the number of times the ball was passed, half completely failed to notice that a man wearing a gorilla suit walked through during the middle of the scene.

A recent viral video provides another example. Popular Youtuber Sushi Ramen Riku tied himself to the ceiling of his grandmother's apartment and waited to see how long it would take for her to notice him. Even though he's perfectly visible to her the entire time, in her peripheral vision, she simply doesn't notice him, for over ten minutes. Evidently she didn't expect her grandson to be strapped to the ceiling.

     Posted By: Alex - Sat Aug 03, 2019
     Category: Video | Psychology

I don’t know if this qualifies as inattentional blindness, as most of us don’t routinely look up at our ceilings.
Posted by Brian on 08/03/19 at 10:16 AM
Inattentional Blindness is a variable examined in eyewitness research.

"Sir, did you witness the crime?"
"No, I did not."
"Why did you not witness the crime, sir?"
"I was busy not noticing."

agent j
Posted by agent j on 08/03/19 at 05:46 PM
I've long wondered if this: was staged or Photoshopped because it seems so outrageous, but there have been incidents in my life which make me think I might do it.
Posted by Phideaux on 08/03/19 at 08:54 PM
About 30 years ago, I was designing an wireless intercom system for submarines. I could not use radio waves, so I decided on modulated infrared. Since infrared rays are invisible, but can still harm your eyes, I decided to put the transmitters where there would be a clear path the the receivers (which were worn on crewmen's heads), but not any place that you would look at. So, I decided they would be best on the ceiling.

Unfortunately, this proposal never went to Phase II.
Posted by Joshua Zev Levin, Ph.D. on 08/03/19 at 09:37 PM
Posted by WebNutMark on 08/07/19 at 04:16 PM
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