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Your Sunday Morning Illusion

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Here’s a cool demonstration of how our brains deal with conflicts between what we hear and what we see by picking favorites and going with the visual cortex. The eyes have it, as it were.

Does this work on you? They say in the video (and in Penn Jillette’s tweet, where I found this) that it’s impossible to turn it off even after you know what’s happening. Personally, I found that once I knew, it was pretty easy to turn it off and and on again — I could look at the “Ff” mouth and see a video clip with unattached sound laid over it, instead of the mouth actually doing the talking. What was your experience?

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3 Comments

  1. I can’t turn it off (I watched it fullscreen, not sure if that influences it). The only way I could turn it off was to cover his mouth. And a couple of times, when I was slow to do so, I’d hear ‘fbah’. I even tried concentrating on his eyes… no dice.

  2. In other examples of this, I have been unable to break the illusion. With this one, I could clearly hear ‘ba’ in all cases except when the announcer was doing voiceovers and the sound was pushed to the background. In those cases, I heard ‘fa’ while looking at the ‘f’ mouth, but I immediately heard ‘ba’ again when the announcer stopped and the sound returned to the fore. I was also watching it fullscreen.

  3. I couldn’t turn it off, but when I made an effort to hear Bah while watch the Fah mouth motions it did change what I heard slightly. I started to hear something that sounded like Bah with an F-like fricative before it. It was really strange. Couldn’t get it to play full screen though.

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