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InvisibleXlea321
Stranger
Registered: 02/26/01
Posts: 9,134
Eye dilation
    #1164616 - 12/23/02 10:30 AM (18 years, 7 months ago)

Anyone know why the eyes dilate on psychedelics as opposed to constricting on opiates?


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Offlineamnesiaseizure
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Male

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Last seen: 10 years, 9 months
Re: Eye dilation [Re: Xlea321]
    #1164624 - 12/23/02 10:32 AM (18 years, 7 months ago)

Psychedelics make you see more.

Opiates make you see less.

there.


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InvisibleEthnoJimmy
Voyage thegalaxy

Registered: 12/02/02
Posts: 244
Re: Eye dilation [Re: amnesiaseizure]
    #1164845 - 12/23/02 12:38 PM (18 years, 7 months ago)

Larger pupils=more visuals  :grin:

Jim 


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Offlinealanp007
shroom addict
Registered: 07/07/02
Posts: 19
Last seen: 16 years, 6 months
Re: Eye dilation [Re: EthnoJimmy]
    #1165701 - 12/23/02 07:57 PM (18 years, 7 months ago)

despite the fact that those two answers are completely wrong, i do have an interesting theory kind of relating to that...i thought it up on shrooms (where else?)
I think that the reason that time slows down on shrooms is because you are not restrained by time anymore, and you can cram a lot more information into the time frame that you are forced to live in. In other words, time makes itself longer for you so you can get more information...not time itself but time in your brain. I just remembered this when he said big pupils mean you see more . Im sure thats why everything is so fucking BRIGHT but not why u see visuals, im not sure why it happens.


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Offline3eyedgod
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Re: Eye dilation [Re: Xlea321]
    #1166594 - 12/24/02 07:27 AM (18 years, 7 months ago)

Mushrooms, LSD, and other seratonin antagonistic hallucinogens, cause sensory overload (wider pupils do allow in more light), hence the hallucinations. I'm sure there's a more scientific, physiological explanation for pupil dilation somewhere on the net.

Opiates are depressant narcotics. I think they cause sensory deprivation to some extent.


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Without everything wouldn't nothing be everything and without nothing wouldn't everything be nothing.I am the beginning and the end,the source and the void, the light and the darkness,i am but a small drop of the ocean yet i am an ocean unto myself


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Invisiblematts
matts

Registered: 01/28/02
Posts: 3,649
[Re: 3eyedgod]
    #1166626 - 12/24/02 07:40 AM (18 years, 7 months ago)



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OfflineMeph
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Registered: 09/01/02
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Re: Eye dilation [Re: matts]
    #1166925 - 12/24/02 09:20 AM (18 years, 7 months ago)

Your pupils are dilated even when you close your eyes...

But I agree. I don't see visuals and pupil size being linked together. Eye doctors (don't know the name in English) sometimes put drops in your eyes to look at your retina. What those drops do is that they dilate your pupils. No visuals whatsoever!


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I'm a bipedal carbon-based pseudo-random number generator.

Demonstration: 152.



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Invisiblematts
matts

Registered: 01/28/02
Posts: 3,649
[Re: Meph]
    #1166964 - 12/24/02 09:37 AM (18 years, 7 months ago)



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Offlinegrimio
Luck is Goodness
Registered: 07/23/02
Posts: 34
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Re: Eye dilation [Re: matts]
    #1167022 - 12/24/02 09:59 AM (18 years, 7 months ago)

"visuals have nothing to do with dialation"

Some of the visuals I've gotten were caused by dialation, because the colors of the real world were extremely more vivid. But I'd have to agree, other then vivid colors I don't think dialation causes visuals. I've noticed though, if you look at someones eyes who are shrooming, they're zipping all over the place. That's probably what causes people to look like things are morphing and running around. Most visuals I'd have to say are in the mind though.


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Invisiblematts
matts

Registered: 01/28/02
Posts: 3,649
[Re: grimio]
    #1167105 - 12/24/02 10:18 AM (18 years, 7 months ago)



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Invisiblematts
matts

Registered: 01/28/02
Posts: 3,649
[Re: matts]
    #1167114 - 12/24/02 10:20 AM (18 years, 7 months ago)



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OfflineBrugman
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Re: Eye dilation [Re: grimio]
    #1167117 - 12/24/02 10:21 AM (18 years, 7 months ago)

Uh, pupil dilation causes more light to be let in to your eye..
how would that cause visuals?
that's all it does, is cause light to be more bright.


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OfflineHelixx
Mood:Fragglerocked
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Re: Eye dilation [Re: Xlea321]
    #10439124 - 06/02/09 02:36 AM (12 years, 2 months ago)

Thought it would be better to bump this than to make a new post. 

Would using opiates and lsd together (or any pupil dilation / constriction drugs together) cause a pupil to be normal sized?  (If dosage was concurrent).  Or would it cause your pupils to fluctuate large and small? 

From pure conjecture, constriction seems more prevalent since optometrists can dilate your pupils and then supposedly constrict them afterwards if they choose.


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Offlineskatealex2
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Registered: 07/04/08
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Re: Eye dilation [Re: amnesiaseizure]
    #10439139 - 06/02/09 02:39 AM (12 years, 2 months ago)

Quote:

amnesiaseizure said:
Psychedelics make you see more.

Opiates make you see less.

there.



:thumbup: 

weed dilates my eyes toooo


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OfflineHelixx
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Re: Eye dilation [Re: skatealex2]
    #10439295 - 06/02/09 03:15 AM (12 years, 2 months ago)

Haha that doesn't help too much.  My question was which would take a dominant effect, if any.


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OfflineInnoculus
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Re: Eye dilation [Re: Helixx]
    #10439311 - 06/02/09 03:17 AM (12 years, 2 months ago)

Quote:

Helixx said:
Thought it would be better to bump this than to make a new post. 

Would using opiates and lsd together (or any pupil dilation / constriction drugs together) cause a pupil to be normal sized?  (If dosage was concurrent).  Or would it cause your pupils to fluctuate large and small? 

From pure conjecture, constriction seems more prevalent since optometrists can dilate your pupils and then supposedly constrict them afterwards if they choose.





No.  You should have made a new thread.  This is SIX YEARS OLD.  Possibly the oldest thread I've ever seen resurrected.


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Offlinewrestler_az
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Re: Eye dilation [Re: Xlea321]
    #10439662 - 06/02/09 05:43 AM (12 years, 2 months ago)

Quote:

Many hallucinogens induce mydriasis. The psychedelics, including LSD, magic mushrooms, mescaline, 2C-B, and DMT, to name a few, all do so by agonizing the serotonergic 5-HT2A receptors in the brain. The dissociatives such as ketamine, DXM, and PCP do so as well via antagonism of the NMDA glutamate receptors. There have also been reports that the atypical psychedelic herb salvia divinorum causes mydriasis. It works via agonism of the κ-Opioid receptors in the brain. How the neurological changes induced by these drugs ultimately causes pupil dilation is unknown however.





http://en.wikipedia.org/wiki/Mydriasis




and i like seeing the ancient threads rise from the dead.


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  Edited by yageman (04/20/06 4:20 PM) 


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Invisiblejohnm214
Male User Gallery

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Registered: 05/31/07
Posts: 17,582
Loc: Americas
Re: Eye dilation [Re: Meph]
    #10439812 - 06/02/09 07:43 AM (12 years, 2 months ago)

Quote:

Meph said:
Your pupils are dilated even when you close your eyes...

But I agree. I don't see visuals and pupil size being linked together. Eye doctors (don't know the name in English) sometimes put drops in your eyes to look at your retina. What those drops do is that they dilate your pupils. No visuals whatsoever!








And if you took a bunch of those drops you'd be delirious, hallucinating.




The explanation given previously is correct, essentially.  Serotonin hallucinogens are stimulatory and your eyes open to allow in more light, your blood pressure goes up, your heart beats faster, et cet.


Opioids are depressant and cause your cornea to contract, your heart and breathing to decrease in frequency, and your gut to slow down to increase digestion.


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