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What is known about Persistence of Vision in various animals? (self.askscience)

submitted 9 months ago by j4k3 to c/askscience

5 comments fedilink hide all child comments

I'm curious about building cat toys that are impractically over complicated with Arduino/Maker stuff. Thus the casual curiosity about persistence of vision. I wonder if other animals have something like a different internal clock frequency where the image only forms at higher (or lower) frequencies than most humans.

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[–] Paragone 0 points 9 months ago

I think I read somewheres that you need 240Hz monitor to reach flicker-fusion with parrots?

It was either 120Hz or 240Hz.

I lost flicker-fusion one time in a movie theatre when an onscreen character pulled a knife, & suddenly the screen was AVALANCHING my mind with discrete-frames, & they were jumping around ( my eyes were jumping-around, but my perspective, within my brain, had been jarred ). That even seemed to have lasted about 1 second.

There is some video, journalism or documentary or something, on dragonflies, and the person with the knowledge was saying..

~ we know how long it takes for each layer in a brain ( neural-network ) to process its layer's stuff, and we know from the short reaction-time of dragonflies that they're using 3-neurons-deep brain for navigating/hunting/reacting.

We don't know how. ~

I seem to remember that neural-signal in our biology runs at about .. 300km/h?

Something like that.

So, with all the circuitry being shorter in an always-smaller kind of animal, it may have a predictably-shorter flicker-fusion rate?

( within kind, so no extrapolating from humans to birds, e.g. )

Anyways, interesting question!

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