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Offlinebenson7
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Why do pupils dilate on some drugs?
    #2521482 - 04/03/04 12:39 PM (19 years, 11 months ago)

I've always wondered - why is it that pupils dilate on drugs? and why is it that some drugs don't do this?

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OfflineChiefThunderbong
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Re: Why do pupils dilate on some drugs? [Re: benson7]
    #2521492 - 04/03/04 12:45 PM (19 years, 11 months ago)

Why is grass green?


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OfflineKingkole
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Re: Why do pupils dilate on some drugs? [Re: ChiefThunderbong]
    #2521493 - 04/03/04 12:46 PM (19 years, 11 months ago)

I also want to know this, its so odd.

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OfflineGrovesk8ter
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Re: Why do pupils dilate on some drugs? [Re: Kingkole]
    #2521517 - 04/03/04 12:55 PM (19 years, 11 months ago)

I heard something about hallucinogens causeing your brain to think the atmosphere is darker, so your pupils dilate to let in more light.. It could be beacuase of all the visuals too!!


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"Much madness is divinest sense"
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OfflineTinTree
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Re: Why do pupils dilate on some drugs? [Re: benson7]
    #2521703 - 04/03/04 02:04 PM (19 years, 11 months ago)

I wonder if this is related to red light shift on hallucinogens?


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"I'm afraid of losing my obscurity. Genuineness only thrives in the dark. Like celery."
- Aldous Huxley

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Offline123
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Re: Why do pupils dilate on some drugs? [Re: TinTree]
    #2521713 - 04/03/04 02:08 PM (19 years, 11 months ago)

Grass is green because it has chrolophyl.
I have no idea why pupils dilate on drugs. I like what Grovesk8ter had to say.

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OfflineChiefThunderbong
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Re: Why do pupils dilate on some drugs? [Re: 123]
    #2521722 - 04/03/04 02:13 PM (19 years, 11 months ago)

I knew someone was gonna say the chlorophyl thing.....you obviously missed the point. Your pupils dialate cause thats just what happens. Although grove said some interesting theories....I honestly don't agree with him at all. I think visuals are the result of, not the cause of the pupil dialation.

There prolly is an actual answer to this question, something to do with our brain and different receptors and shit and somehow the various hallicinogens do something specific to a specific part of our brain which causes pupil dialation.........which is what I ment with my first post. It's just what happens.


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OfflineBenFungTorez
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Re: Why do pupils dilate on some drugs? [Re: benson7]
    #2521816 - 04/03/04 02:55 PM (19 years, 11 months ago)

i know pupil constriction is mediated by the sympathetic nervous system. stimulation of alpha 1 adrenergic receptor causes the smooth muscles in in pupils to constrict.
so..my guess would be the drugs effect your sympathetic nervous system in a way that blocks these receptors and allows the muscles that control your pupil to relax.?
just my thoughts...i'm sure its more complex than this.

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InvisibleDankman
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Re: Why do pupils dilate on some drugs? [Re: BenFungTorez]
    #2521863 - 04/03/04 03:09 PM (19 years, 11 months ago)

Your pupils dialate on coke and meth and there aren't any visuals. I think visuals have to do with something totally different. Dialated pupils might help though!


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"There was a dirty rainbow coming out of the fucking toilet" - 40 Oz.

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OfflineChiefThunderbong
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Re: Why do pupils dilate on some drugs? [Re: Dankman]
    #2521992 - 04/03/04 03:33 PM (19 years, 11 months ago)

Thats a very interesting point, it all has something to do with brain signals and receptors and shit I'm sure.

What I ment by it causes the visuals though, is your pupils are huge so more light enters the eyes.....making things brighter and whatnot. Thats all I was saying with that, it's all really goin on in the brain.


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Yeah spinnin' around again
yea caught in a tailspin

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Invisibletoad857
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Re: Why do pupils dilate on some drugs? [Re: benson7]
    #2522408 - 04/03/04 05:40 PM (19 years, 11 months ago)

it's complicated. but interesting if you're into biology

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InvisibleDankman
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Re: Why do pupils dilate on some drugs? [Re: toad857]
    #2522511 - 04/03/04 06:07 PM (19 years, 11 months ago)

I am interested in biology. Please enlighten us.


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"There was a dirty rainbow coming out of the fucking toilet" - 40 Oz.

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OfflineDivided_Sky
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Re: Why do pupils dilate on some drugs? [Re: Dankman]
    #2522725 - 04/03/04 07:08 PM (19 years, 11 months ago)

When a foreign substance is introduced into your body and starts affecting the way you function, the natural reaction is adrenaline: your heart rate increases, your eyes dilate. It's like shock. Same thing happens if you are in a high stress situation.


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1. "After an hour I wasn't feeling anything so I decided to take another..."
2. "We were feeling pretty good so we decided to smoke a few bowls..."
3. "I had to be real quiet because my parents were asleep upstairs..."

Edited by Divided_Sky (04/03/04 07:11 PM)

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Invisibledobinky
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Re: Why do pupils dilate on some drugs? [Re: benson7]
    #2522790 - 04/03/04 07:25 PM (19 years, 11 months ago)



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InvisibleRavus
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Re: Why do pupils dilate on some drugs? [Re: Divided_Sky]
    #2523290 - 04/03/04 10:25 PM (19 years, 11 months ago)

Quote:

Divided_Sky said:
When a foreign substance is introduced into your body and starts affecting the way you function, the natural reaction is adrenaline: your heart rate increases, your eyes dilate. It's like shock. Same thing happens if you are in a high stress situation.




If so then the guy who directed Fear and Loathing must've made something wrong, because when Duke ate the adrenochrome his pupils were the size of a needle.

I also wonder, why is it that cocaine makes the pupils dilate, but heroin and some other opiates make the pupils shrink?

On another note, pupil dilation also occurs when you see someone you're attracted to, and pupil constriction occurs when you see someone you actively dislike. Dilated pupils are considered more attractive than constricted ones, and this is why Belladonna is Italian for beautiful lady, where the woman in Italy would take Belladonna to dilate their pupils.
http://www.askmen.com/dating/datingadvice/dating17.html

"An eye can threaten like a loaded and leveled gun, or it can insult like hissing or kicking; or, in its altered mood, by beams of kindness, it can make the heart dance for joy."
- Ralph Waldo Emerson


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So long as you are praised think only that you are not yet on your own path but on that of another.

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InvisibleHeavyToilet
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Re: Why do pupils dilate on some drugs? [Re: Ravus]
    #2523312 - 04/03/04 10:38 PM (19 years, 11 months ago)

I believe Adrenochrome is not actually psychoactive, it's just a myth.

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Offlinemopeds_beep_beep
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Re: Why do pupils dilate on some drugs? [Re: Ravus]
    #2523320 - 04/03/04 10:41 PM (19 years, 11 months ago)

Quote:

Ravus said:
I also wonder, why is it that cocaine makes the pupils dilate, but heroin and some other opiates make the pupils shrink?





Is cocaine considered an opiate? I didnt think it was...

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InvisibleRavus
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Re: Why do pupils dilate on some drugs? [Re: mopeds_beep_beep]
    #2523347 - 04/03/04 10:54 PM (19 years, 11 months ago)

Ah, that might be why. I always thought it was due to similar actions, as in similar addiction, combinations with other opiates (like speedballing) and pain relief, but if it's not actually an opiate... then what is it? A CNS stimulant, of course, but cocaine and crack would have a category of their own?


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So long as you are praised think only that you are not yet on your own path but on that of another.

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InvisibleDankman
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Re: Why do pupils dilate on some drugs? [Re: Ravus]
    #2523471 - 04/03/04 11:58 PM (19 years, 11 months ago)

an opiate comes from opium. opiates come from the poppy plant while cocaine comes from the coca plant.


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"There was a dirty rainbow coming out of the fucking toilet" - 40 Oz.

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Invisiblezeta
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Re: Why do pupils dilate on some drugs? [Re: mopeds_beep_beep]
    #2523906 - 04/04/04 06:05 AM (19 years, 11 months ago)

nobody said cocaine is an opiate

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Invisiblepsyphon
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Re: Why do pupils dilate on some drugs? [Re: zeta]
    #2525452 - 04/04/04 06:37 PM (19 years, 11 months ago)

Interestingly enough though, cocaine is a narcotic, which is classically something that causes sleep. Its a very interesting molecule, with interesting pharmacology.


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"The real voyage of discovery consists not in seeking new landscapes but in having new eyes."
- Marcel Proust

I wish you all ceaselessly flowing moments of happiness.

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InvisibleHeavyToilet
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Re: Why do pupils dilate on some drugs? [Re: psyphon]
    #2525467 - 04/04/04 06:41 PM (19 years, 11 months ago)

I don't think cocaine is a narcotic.

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OfflineGinseng
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Re: Why do pupils dilate on some drugs? [Re: benson7]
    #2525866 - 04/04/04 09:03 PM (19 years, 11 months ago)

i figured your pupils dilate because in a way these drugs are trying to *open your eyes* to the real world...

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InvisibleTremor1127
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Re: Why do pupils dilate on some drugs? [Re: psyphon]
    #2526029 - 04/04/04 10:08 PM (19 years, 11 months ago)

cocaine is a stimulant dude...

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Offlinemopeds_beep_beep
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Re: Why do pupils dilate on some drugs? [Re: zeta]
    #2526265 - 04/05/04 12:09 AM (19 years, 11 months ago)

Lol sorry, i misinterpreted the reading... im also a dumbass

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OfflineSigno
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Re: Why do pupils dilate on some drugs? [Re: mopeds_beep_beep]
    #2526615 - 04/05/04 03:44 AM (19 years, 11 months ago)

wow, alot of misinformation in this thread....im not even going to touch it... :wexican:


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Correlation is not causation!

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InvisibleSixCee
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Re: Why do pupils dilate on some drugs? [Re: ChiefThunderbong]
    #2528691 - 04/05/04 05:52 PM (19 years, 11 months ago)

Chloroplasts reflect green light and absorb the other lights, giving the effect of being green.

Now answer the fuckin question foo!  :crazy2:


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InvisibleSixCee
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Re: Why do pupils dilate on some drugs? [Re: Ravus]
    #2528726 - 04/05/04 06:02 PM (19 years, 11 months ago)

Quote:

Ravus said:
Quote:

Divided_Sky said:
When a foreign substance is introduced into your body and starts affecting the way you function, the natural reaction is adrenaline: your heart rate increases, your eyes dilate. It's like shock. Same thing happens if you are in a high stress situation.




If so then the guy who directed Fear and Loathing must've made something wrong, because when Duke ate the adrenochrome his pupils were the size of a needle.

I also wonder, why is it that cocaine makes the pupils dilate, but heroin and some other opiates make the pupils shrink?





Mind altering chemicals don't all dilate the pupils or work in the same way. Like coke and heroin are two completely different substances. Also adrenachrome is a myth.


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->Quote of the Moment :
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Offlinelittlejohn747
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Re: Why do pupils dilate on some drugs? [Re: SixCee]
    #2529307 - 04/05/04 08:40 PM (19 years, 11 months ago)

I am sure I am way over simplizing this but I always thought of it like this.I read that you pupils dialate when you look at somthing that you find pleasing(on one level or another) so that means that some chemicals start kicking in your body to make a change to your over all mental state during that time during which your pupils dialate as like a side effect to these chemicals(or so that is how i understood it). So if all this is true than when you trip say these same chemicals start to be produced (On a much greater scale) and like befor you eyes dialate.Maybe i am way off but i too have been wondering this for a long time.It would be really great if someone could explain in layman why this happens.

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InvisibleSixCee
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Re: Why do pupils dilate on some drugs? [Re: littlejohn747]
    #2529422 - 04/05/04 09:05 PM (19 years, 11 months ago)

I have read the same thing. Some researches done an experiment where they showed several people (some males some females) pictures of attractive and not so attractive people. The researchers noted that the test subject's eyes dilated when he/she saw a picture of an attractive person and not nearly as much when the picture was of an unattractive person.


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~~~~~~~~~~~~~~~~~~~~~~~~
-->The above statements may or not be true.
->Quote of the Moment :
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Invisiblepsyphon
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Re: Why do pupils dilate on some drugs? [Re: Tremor1127]
    #2531003 - 04/06/04 09:38 AM (19 years, 11 months ago)

Ok sorry, I guess I didn't mean to say that it is a narcotic. I did hear something about it having an unusual chemical structure for its effects. Maybe I meant to say its a tropane alkaloid, like those found in belladonna, jimson weed, datura, etc. Obviously cocaine has different effects from those alkaloids. Typical tropane alkaloids can be used to induce sleep.

Also I'm pretty sure most stimulants don't have anesthetic effects.

I just meant to say that its an interesting molecule with interesting pharmacology. I try not to spread misinformation.


--------------------
"The real voyage of discovery consists not in seeking new landscapes but in having new eyes."
- Marcel Proust

I wish you all ceaselessly flowing moments of happiness.

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OfflinePsilygirl
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Re: Why do pupils dilate on some drugs? [Re: benson7]
    #2531583 - 04/06/04 01:08 PM (19 years, 11 months ago)

well, some of these responses are kinda silly, and some are useful.  here's my take on the whole thing.

drugs interact with your nervous system--that's what causes a response and makes you feel different.  any standard bio text will explain that there are 2 types of autonomic nervous systems: sympathetic and parasympathetic.

your sympathetic nerves are you're "fight or flight" nerves and prepare the body for a more stressful situation.  it causes: dilated pupils, increased heartbeat, inhibits stomach and intestine activity, stimulates the release of glucose, secretes norepinephrine and epinephrine and relaxes the airways.

your parasympathetic nerves, on the contrary, are you're "rest and digest" nerves and promote relaxation and digestion.  it causes: constricted pupils, slow heartbeat, stimulates stomach and intestine activity, inhibits the release of glucose and constricts the airways.

so whats the take home message?  pupil dilation or constriction is the result of a certain drugs specific interaction with your nervous system (which, as far as hallucinogens, there isnt much publishing on).  so depending on the drug, your nervous system has a different response.

:sun:
psily


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"Love says 'I am everything.' Wisdom says 'I am nothing.' Between the two, my life flows."


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