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Time perception
I think we've all noticed that time seems to slow down when our feet leave the object. This morning, I ran across a video documenting a couple of experiments on time perception--in particular, one involving freefall:

http://www.youtube.com/watch?v=RjlpamhrId8

The video was either done very early in the experiment, or cherry picks the results. In the end, the researchers came to the conclusion that danger has no effect on the perception of time, but only on recollection:

http://www.plosone.org/...journal.pone.0001295

Enjoy!

Michael
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Re: [crwper] Time perception
Don't have the time or speedy internet
connection to review your links right now
but I totally loved the time-warp reference.

Another jumper and I have swamped some
PMs about this phenomenon. During my 1st
jump from 300 feet --- I took 1 second and
then pitched, the time between releasing the
PC and getting a wing above my head was
definitely the longest hour of my life!!
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Re: [crwper] Time perception
 "cocaine rat, has gotten mad, and keeps trting to break out of his cage..."

lol

i wonder what acid rat does...
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Re: [crwper] Time perception
Then my recollection must be shot! I've had it happen on many skydives and one BASE jump.

Most recently...

On New Years Day I was ice skating and busting some nice moves when I hit a rough spot in the ice as I turned backwards. I was doing about 70~80% of full speed when I went flying backwards parallel to the ground. I consciously remember wondering how much longer is this fall going to last!! Actual "flight" time was just about 2 seconds based on just plain physics. I was laid out parallel in a PLF position for what felt like 5~6 seconds waiting "forever" for impact.

In this "incident," there was no recollection involved. I slid to a stop knowing the time was wrong. IMHO, I'm pretty sure it has something to do with adrenaline and sudden fuckups! First you're Cool then you're Shocked

But... real time dialation would be very cool!
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Re: [avenfoto] Time perception
 
In reply to:
i wonder what acid rat does...


http://learn.genetics.utah.edu/...tion/drugs/mouse.cfm
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Re: [zoobrothertom] Time perception
Are you sure you don't just remember it that way?

I remember the same thing on most of my BASE jumps. I feel like I can see details in the cliff that I shouldn't be able to. I can see climbers on the face clearly, and have time to think about where they are, what they're up to, and so on. For a 1-2 second delay, this doesn't sound right. But the problem is, all of this is what I remember happening at the time, and it's hard to say if that happened after the jump, when the memory was formed, or if I actually picked all that out in the moment.

But there is one thing which can help us tell the difference, and that's how fast you're able to respond in the situation. Friends who have been involved in serious BASE accidents tell me that the thing which surprised them the most is how quickly time went by when it was actually time to do something.

A couple of times I've tripped when I was getting out of the car, or something, and in hindsight it seems like time went really slow. But what's interesting is that my reactions seemed equally slow. Generally, I remember seeing the ground coming up and thinking, "Oh, I'm falling," or something like that.

A while back, I was running and slipped on some ice. What I remember is somehow staying upright while I slid about 6 feet on the ice, which seemed like an incredibly long ride. I definitely didn't respond particularly quickly or intelligently.

In my experience, at least, it seems like although I remember time moving very slowly, I've never actually done something in the moment which proved it's anything more than a memory.

Michael
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Re: [GreenMachine] Time perception
GreenMachine wrote:
Don't have the time or speedy internet
connection to review your links right now
but I totally loved the time-warp reference.

Another jumper and I have swamped some
PMs about this phenomenon. During my 1st
jump from 300 feet --- I took 1 second and
then pitched, the time between releasing the
PC and getting a wing above my head was
definitely the longest hour of my life!!

i keep "feeling" like im taking a 2 second delay but it ends up being a very short 1. its weird falling at subterminal airspeeds.
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Re: [UberChris] Time perception
I usually add 1 sec to my count if I want to take a 3 sec Delay... count to 4 since most count faster.
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Re: [leroydb] Time perception
i don't count at all. i just do what feels right.Smile
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Re: [leroydb] Time perception
leroydb wrote:
I usually add 1 sec to my count if I want to take a 3 sec Delay... count to 4 since most count faster.

I don't know if you had the good fortune to catch Kris's whale impersonation at the potato bridge last May. We'd been jumping rounds, and kept coming short of the 4-second delay we were looking for. Kris steps up, jumps, and, as loud as he can, does the best "whale" impersonation (a la Finding Nemo) I've ever heard: "Oooooonnnneee... Twwwwoooooo..." Everyone bust out laughing. By the time he hit "Fooooouuuurrrr", you could hear the pucker in his voice.

Michael