-------------------------------------------
Why Do Some Drugs Make Your Pupils Wider? - Duration: 3:18.
[ ♪ Intro ]
Whether or not eyes are the windows to the soul... scientifically, pupils are the
windows of the eyes.
And sometimes, those windows are more open than usual, like when you've taken a medication
that causes pupil dilation.
Or when people use certain recreational drugs.
It all comes down to how different chemicals can cause changes throughout your whole body,
which can affect little muscles in your eyes.
The pupils are openings that let light into the rest of your eye.
And the colored part of your eye, the iris, controls how much light makes it in.
The balance of two muscle groups in the iris changes how big your pupils are, like a camera aperture.
The iris dilator is arranged like bicycle spokes around the center of your eye.
And when it contracts, it pulls your pupils open wider.
The iris sphincter, on the other hand, is in a ring around your pupil and acts like
most of the sphincter muscles in your body.
It constricts your pupils down to little dots.
So now you know that you've got a sphincter in your eye.
That's just a fact for you.
Anything that blocks or stimulates either muscle can knock that balance out of whack
and cause some really noticeable changes.
For example, drugs that block receptors for the neurotransmitter acetylcholine can cause
impressive dilation.
These medications are designed to inhibit the parasympathetic nervous system, which
controls the involuntary muscle contractions that keep things moving in your body, like
your lungs, or the plumbing that gets rid of waste.
This system also controls the iris sphincter muscle.
So when it's inhibited, the iris sphincter can't counteract the pull from the iris
dilator — and you get wide open, 'blown out' pupils.
Some drugs, like ones for overactive bladders or excessive sweating, target the entire parasympathetic
nervous system.
They often have dilated pupils or blurry vision as side effects, but those aren't the goal.
Others, like the drops used to dilate pupils for eye exams, are more targeted and don't
throw your whole body off.
Now, other drugs can stimulate the sympathetic nervous system, responsible for your body's
'fight-or-flight' response.
And these too can cause dilation.
Take adrenaline, which floods your bloodstream when you're scared but is also a medication
for extreme allergic reactions — it's what's in the EpiPen.
Adrenaline can bind to nerve receptors connected to the iris dilator, making it contract and
pull your pupils open wide.
If people use drugs like cocaine, amphetamines, or even weed, their brains have more dopamine
and norepinephrine floating around.
Usually, either extra neurotransmitters get released, or receptors that naturally suck
them away get blocked by those drugs.
These chemicals are involved in the "high" feeling but also cause dilated pupils.
Scientists think that dopamine makes certain nerve cells release more norepinephrine, which
works like adrenaline to make the iris dilator contract.
So wide pupils can be caused by a lot of things.
But they're a hint that certain chemicals — illicit or not — are bubbling through
your body.
Thanks to our Patreon patrons for asking us great questions like this!
If you want to support us and send us questions, and get some other cool stuff you can go to
patreon.com/scishow.
And if you want to learn more about human eyes, check out our video where I explain
what those pesky little eye floaters actually are.
[ ♪ Outro ]
-------------------------------------------
The Robert Irvine Show (March 27, 2018) A guest suspects his girlfriend's relationship with her.... - Duration: 39:31.
For more infomation >> The Robert Irvine Show (March 27, 2018) A guest suspects his girlfriend's relationship with her.... - Duration: 39:31. -------------------------------------------
Kia Soul met Airco en LMV!! - Duration: 0:58.
For more infomation >> Kia Soul met Airco en LMV!! - Duration: 0:58. -------------------------------------------
Škoda Yeti 1.8 TSI 160pk 4X4 - Duration: 1:01.
For more infomation >> Škoda Yeti 1.8 TSI 160pk 4X4 - Duration: 1:01. -------------------------------------------
Kia Rio 1.2 5DR met ABS, radio/CD/MP3 en USB+AUX - Duration: 1:03.
For more infomation >> Kia Rio 1.2 5DR met ABS, radio/CD/MP3 en USB+AUX - Duration: 1:03. -------------------------------------------
La verità sulla malattia di Fabrizio Frizzi svelata dopo la morte | M.C.G.S - Duration: 3:43.
For more infomation >> La verità sulla malattia di Fabrizio Frizzi svelata dopo la morte | M.C.G.S - Duration: 3:43. -------------------------------------------
Kia Rio 1.2 Comfort Pack met Airco en 7jr garantie!! - Duration: 1:00.
For more infomation >> Kia Rio 1.2 Comfort Pack met Airco en 7jr garantie!! - Duration: 1:00. -------------------------------------------
La Gemma Galgani si è sentita minacciata dal cavaliere campano | M.C.G.S - Duration: 3:36.
For more infomation >> La Gemma Galgani si è sentita minacciata dal cavaliere campano | M.C.G.S - Duration: 3:36. -------------------------------------------
Mazda 6 SKYACTIV-G 2.5 192 PK AUTOMAAT, ZEER MOOI EXEMPLAAR! 12 maanden BOVAG garantie - Duration: 0:58.
For more infomation >> Mazda 6 SKYACTIV-G 2.5 192 PK AUTOMAAT, ZEER MOOI EXEMPLAAR! 12 maanden BOVAG garantie - Duration: 0:58. -------------------------------------------
Kia Venga Seven met Cruise, Navi en Achteruitrijcamera - Duration: 0:57.
For more infomation >> Kia Venga Seven met Cruise, Navi en Achteruitrijcamera - Duration: 0:57. -------------------------------------------
Hyundai i10 1.25I 5DR i-Drive Cool - Duration: 1:01.
For more infomation >> Hyundai i10 1.25I 5DR i-Drive Cool - Duration: 1:01. -------------------------------------------
Kia Picanto 1.0 CVVT 5-DRS ComfortLine weinig km!!!! - Duration: 0:59.
For more infomation >> Kia Picanto 1.0 CVVT 5-DRS ComfortLine weinig km!!!! - Duration: 0:59. -------------------------------------------
Kia Rio World Cup Edition met Leder, Cruise en 7jr garantie - Duration: 0:54.
For more infomation >> Kia Rio World Cup Edition met Leder, Cruise en 7jr garantie - Duration: 0:54. -------------------------------------------
Chevrolet Cruze 1.6 DOHC 124pk 5D LT - Duration: 0:58.
For more infomation >> Chevrolet Cruze 1.6 DOHC 124pk 5D LT - Duration: 0:58. -------------------------------------------
Kia Venga 1.4 90pk X-tra met Airco!!! - Duration: 1:01.
For more infomation >> Kia Venga 1.4 90pk X-tra met Airco!!! - Duration: 1:01. -------------------------------------------
Action Photography - Behind The Scenes #6 with YvensB Photo - Duration: 11:17.
what's up guys Yvens B here I'm thinking again again what am i doing my
life I'm taking you again behind the scenes for another video right now I'm all
packed and ready it's about 1024 a.m. we're gonna go
crush another fitness shoot well this time I'm gonna do some more sporty stuff
so I have a hockey player line up the rink but and I have an assistant boss
also and I packed the car
music leaving home now heading back to my assistant okay so in that shot you'll
see the first test that we did we first we first started using the PLM from
Paul C Buff which is a modifier that I use really really really often
especially when I'm in the studio and just like one big broad light it does
the job I would say 80% of the time it just does whatever it needs to do it's a
broad source it's it looks good everyone looks pretty much good using
that specific light source but you'll see them a few tests I'm not really
happy with the way it looks this audio from this is really saying that I don't
like the way it looks so I'm gonna change it to a smaller source this
that's smaller source actually liked it better because they just controls light
it's in recessed out the box from Paul C buff I just like the way it looks it
really looks good it tends to make light less spread all over but really more
controlled which is something I really appreciate especially with that
situation and also thinking about to my old shoot with the ski thing it's really
to keep a consistency in the way I lit stuff so I was using the Sun as source
like a source of light and then that modifier so I think keeping the same is
just a better way and also in that part of the video you'll see me actually
again lying down on the floor and taking that shot the reason why I immediately
do this is because I really like the effect that it has using a wide-angle
lens Plus like I mean being down on the
ground it really makes it look much much more better so people look taller and
then using a distortion of the lens at the eye
and the lens it just makes people like stretch a bit more a bigger head usually
is a like a longer head injuries a better looking ahead the person looks
like a hero and so just a regular person in an environment that's why I usually
go very very low and to use the effect of the lens to our advantage but this is
cold this is really really cold this is not comfortable at all I mean ten
minutes is fine but then I spent like twenty five minutes in there it was not
comfortable but again sacrifice to win sacrifice to get the shot remember this
this is really important information that I'm sharing right now sacrifice to
win also the reason why I like that policy Bluff octa banks as I mentioned
before is because it's easily modifiable and in that movement really easily with
the with the other modifier the PLM like I mean yes to be put upside down and
then it has to be manipulated this way and then it can actually spin around
with this it pretty much takes the same gravity helps it keep to keep it down
and that recessed light and that double diffuse life is just awesome
so I just really like the way it looks and I tend to gravitate toward this
modifier a lot and keeping inconsistent keeping consistency in my shoot let's
say I did this key one and it was I use the same modifier II and using the Sun
right now I'm faking the Sun by using two strobes on this each other the
subject to make it pop a bit more and decrease separation from the subject so
this is really awesome and every appreciate and I should shut down my
phone because this is unprofessional at all so as you can see sasha is booming
the light over the model so it creates a better light and then it's also creating
a big spread and that recessed light just like really enveloped the subject
what without being spread everywhere which is the issue with the PLM is that
it's a really broad broad light keeping control of it is really difficult that's
why using a smaller modifier to keep control of the lights keep the subject
lit incompletely from A to Z but not spilling everywhere so that the entire
actually Irena is listen for that one light
so I'm of the Church of people that whenever I know I get the shot like at
least like three or four of them I'm not gonna go further and then reshoot cuz
again this is in comfortable situation and also I was depressed with time only
at the arena for the one hour and a half if I had three hours then I would have
been more comfortable and taking more in my time and thinking about it but the
fact that I have such short time to perform the fact that I had such a short
time to perform and do that shoot I had to make a decision like I mean I get
shot or a decent-enough and I can live with it I live with them especially with
the time given on a shoot and then you know budget is running out and then it's
that's coming out of my own pocket because it's my own shoot and I'm doing
this for YouTube and not for a quiet so if I had the client that I wouldn't take
in more time just to make sure I get the crisp puffs but this is perfect this is
really for me and not for anyone else so I'm taking my budget seriously I'm not
rich yet so I'm being careful so one hour and a half to do I had I had in
mind actually only two shots that's all I wanted is really two solid shots the
rest but getting all the great shots okay
stop it there
the second shot that I had in mind except for the hero one is the action
shot so you'll see the model actually skating through the rink and there is
going sasha is actually following him and with the light so that makes it
really interesting you can actually see him moving around and then whenever he's
taking a spin or doing a circle around the ice you can actually see Sasha hang
around and at a certain point I realized that my godox ad600 was actually the
flash duration so the amount of time that the flash and the light is being
spread was a bit too long compared to the Einsteins which our killer Fitness
they're really really short so they're really amazing we can really freeze the
action a good rocks are great at harris sync speed so let's say like one thought
one four thousand one thousand one one thousand but at lower sync speed at to
one 250 compared to the Einsteins they're really really slow so I had to
remove it in order to not get ghosts in my photos I'll show you an example I'll
show you a sample of ghosting in that image right now
right now I got everything I needed as through the action so I had about 10
minutes to do another shot so we set up quickly you can see I put a shit box
behind and I asked the player to actually break like I do a severe break
in front of the net and in front of the light so I sacrificed my light just a
little bit for the shot it's equipment it's not a baby
so sacrifice this I just to get the shot it looks really cool I can't wait to
show it to you in a few minutes so it's a wrap on this finished shoot it's been
kind of hellish because I only had one hour and a half yeah that's what the
budget a lot for today so that's it I'm gonna show you around
and I forgot to take some plates so I'm gonna plate it right now because Sasha
will not be happy with me
that's it and this pretty much wraps it if you
guys have any questions about this shoot or if you have anything let me know in
the comments if you have any questions about it I'll be posting the pictures of
my social media so just make sure you follow me on Instagram and B hands and
on Facebook and also if you liked whatever I just shot or the explanation
that I just gave just make sure to LIKE and subscribe to that YouTube channel
that's gonna help me a lot and also if you're interested in purchasing the gear
that I'm currently using I posted all the links below in the comments so
Cheers I hope you're having a great week I'm
trying to crush it as much as possible and I'll see you next video
Cheers and good luck
-------------------------------------------
Kia Venga 1.6 CVVT 126pk Aut. ExecutiveLine - Duration: 0:58.
For more infomation >> Kia Venga 1.6 CVVT 126pk Aut. ExecutiveLine - Duration: 0:58. -------------------------------------------
Kia cee'd 1.0 T-GDi Comfortplusline Navigator met Airco en 7 jr garantie!! - Duration: 0:57.
For more infomation >> Kia cee'd 1.0 T-GDi Comfortplusline Navigator met Airco en 7 jr garantie!! - Duration: 0:57. -------------------------------------------
Kia cee'd 1.6 GDI Eco Dynamics 135PK DynamicLine - Duration: 1:02.
For more infomation >> Kia cee'd 1.6 GDI Eco Dynamics 135PK DynamicLine - Duration: 1:02. -------------------------------------------
LEGO® - 60th Anniversary
For more infomation >> LEGO® - 60th Anniversary-------------------------------------------
Current Physique and What I'm Doing to Get Shredded - Duration: 3:10.
hey guys Kevin Kreider I wanted to do a YouTube video on what I am currently
doing for my physique right now and there's three things I'm doing to
improve my physique while also to mentally being able to use my nutrition
and training to enhance my mental performance as well and over well since
well being that's most important to me right now and the number one thing is
I'm actually now vegan and the reason what remain me want to switch to vegan
is because I met this woman named Victoria Moran on the subway and she
just had this light and glow about her and we started speaking on the subway
and she was just very very much some energy I was attracted to in a sense
like she just was feeling young her skin was great and she was full of vibrancy
and she told me she was Tegan and I met up with her and we started speaking
about vegan the misconceptions about a vegan diet and culture and I was hooked
so I tried it for 30 days and I told myself I am only doing this for 30 days
but then I got hooked I'm here now and I'm still being in some going vegan and
that's what I'm gonna do to try to improve my physique and the thing is
that it it does have its challenges obviously but I am getting through it
very much more at ease that's almost been three months and I'm feeling really
good about the way I feel and the esthetics obviously I've never gone on a
vegan shred so much but the things that I'm gonna do in the next two things I'm
gonna share with you it's more for getting leaner the next one is I'm gonna
do warriors fasting if you don't know a warrior fasting is you can watch my
previous videos on full details on warrior fasting but it's part of my
warrior within igniting your Warrior Within training course that I actually
have and we're worried are fasting eating one big meal a day and I'm doing
it on the days that I don't like train so it's gonna be four to five times
I'm doing water fasting and only eating one meal a day and that's what I'm doing
and you can look at like I said in the past videos that I have on how you can
do what a fast anymore detail the third thing I'm doing is focusing on
weight training my chest and my shoulders more so I'm only gonna be
weight training twice a week now that might go counter clockwise to most
people on vo I won't cab why are you only doing twice a week reason why I'm
doing two twice a week is because I am doing water fasting more often I'm gonna
nail down my nutrition a little bit more and get used to getting a little bit
lower protein and making sure I'm within a quarter deficit every time and without
feeling deprived and being able to focused and stay energetic as well and
that's my main goal and I want to get down nice and lean for that as well I
hope that helped you guys out a little bit please subscribe to my youtube
channel and I'll see you guys soon
-------------------------------------------
Bill O'Reilly Points Out Two Dirty Tricks About Stormy's Interview That Proves Her Deceit - Duration: 2:38.
Bill O'Reilly Points Out Two Dirty Tricks About Stormy's Interview That Proves Her
Deceit.
The American people don't care what Donald Trump did years ago before he became President.
However, the mainstream media fights to keep the gossip going as their Russia Collusion
narrative is over.
The mainstream media has run out of ideas and will continue to push anything to make
President Trump look bad.
They are so desperate to try to ruin Trump's Presidency, and will continue to not cover
the actual achievements that President Trump and his administration are doing.
Stormy Daniels recently interviewed with CNN's Anderson Cooper Sunday night on 60 Minutes.
During her salacious interview, she discussed her alleged one night affair with Donald Trump
12 years ago.
CNN is obsessed with this porn star now.
The White House pushed back denying the allegations.
In addition "Stormy Daniels" has also denied having any sexual relations with Trump
on 2 separate occasions.
But, many are questioning Stormy Daniels statements from her interview.
ill O' Reilly came forward Monday morning slamming Stormy while pointing out her lies
during the interview in a tweet storm.
O'Reilly tweeted, "So much for the porn performer on "60 Minutes" who's story
doesn't stack.
She says she didn't want money to attack Donald Trump but accepted money.
She doesn't want money now either.
So why are you on national television with all this garbage?
Does that help your daughter?"
"If someone threatened your young child with harm, would you not go to the police?
Even after you saw the man who did it?"
"So, Anderson, some guy threatened my baby daughter to my face but I was too scared to
tell the police but not too scared to tell @60Minutes."
Also, Anderson, I never wanted money but accepted money and tried to sell my Trump story to
a newspaper.
But I never wanted money.
Are you hearing me, Anderson????
The left's new obsession is Stormy Daniels because the Russian collusion is dead.
They want to find any reason to hate the President and make him out to be the worst person ever.
Stormy Daniels is CNN's new vessel right now and they are using her like a puppet.
In two years she will be broke and a nobody.
We Deplorables elected President Trump to Build the Wall and Drain The Swamp.
We did not elect him to be our PASTOR.
What do you think about this?
Please share this news and scroll down to Comment below and don't forget to subscribe
Top Stories Today.
-------------------------------------------
11.B reBels - Neumann János Gimnázium Eger - Duration: 11:32.
For more infomation >> 11.B reBels - Neumann János Gimnázium Eger - Duration: 11:32. -------------------------------------------
Watch "No One" New Release For more infomation >> Watch "No One" New Release-------------------------------------------
MON PONEY EST DOMINANT. QUE FAIRE? - Duration: 9:03.
For more infomation >> MON PONEY EST DOMINANT. QUE FAIRE? - Duration: 9:03. -------------------------------------------
Opérations intersexe | Intersex Genital Mutilation | # Il y A Une Couille Avec Votre Fille - Duration: 9:09.
For more infomation >> Opérations intersexe | Intersex Genital Mutilation | # Il y A Une Couille Avec Votre Fille - Duration: 9:09. -------------------------------------------
Mercedes-Benz C-Klasse 180 K. ELEGANCE ECHTE DEALERAUTO! - Duration: 1:00.
For more infomation >> Mercedes-Benz C-Klasse 180 K. ELEGANCE ECHTE DEALERAUTO! - Duration: 1:00. -------------------------------------------
최신 뉴스: 트로트 가수 금잔디 결혼과 남편 - Duration: 6:03.
For more infomation >> 최신 뉴스: 트로트 가수 금잔디 결혼과 남편 - Duration: 6:03. -------------------------------------------
최신 뉴스: 김영호 부인(아내) 최수임, 딸과 아빠본색 - Duration: 5:46.
For more infomation >> 최신 뉴스: 김영호 부인(아내) 최수임, 딸과 아빠본색 - Duration: 5:46. -------------------------------------------
First Assignment Data Structures Ionian University P2017030 - Duration: 7:30.
First Data Structure Assignment Ionian University
First we have 4 input files with the names data_1, data_2, data_3 and data_4 and we are asked to explain how the heapsort algorithm was executed in these 4 files
First of all, a pile must become a max heap array, that is, it must theoretically be in Binary tree. Based on the theory, the root is greater than or equal to the children. This is applied to this piece of the program. He finds the largest number of the entire table and puts him in the first place.
The program will create a table with our input data in ReadData, which is called call by referance to the Heapsort function, and in the function that we find this table is called heap.
That is, this table, which is the Elements of the data files, in the heapsort function is called heap.
After the heapsort.c program has created a heap array that maintains the MAX HEAP the heapsort is executed
Theoretically, in the first run of the heapsort it becomes a change of the right child in the binary tree with the root and delete the leaf in which the root went
Immediately afterwards we check the children at the bottom of the binary tree if they are older or smaller than the parent.
If the child which we are looking at is bigger then make a change otherwise it looks at the next and compares the parent with the next child
Then again we make max heap to our table, the root goes to the last position and is deleted. This is in theory.
In practice, in our own heapsort we have a for loop which starts with the last elements of the table,
because we want to root theoretically every time.
Thus the for loop will leave the last position that each root has entered each time, the binary tree will diminish
and the range of our table will diminish because in the do-while repeat we want the pointer
we want the pointer indicating to child "c" to be smaller than the index indicating in the last element of the binary tree "j".
I'll take an example of running heapsort data_4 using the algorithm in the program.
Initially, we have created the heap array with the root of 531. In the first run of for we have the change of root with the last element of the table.
Then we see c showing the right child of the binary tree.
C is 1, checks whether the element in heap [c] is less than the upstream element in the binary tree,. If it is then go to check the next child.
. Then it controls the new root if it is smaller than the child. If it is then to make a change so that the larger element is the root.
. To continue do-while and break it later, it assigns the c value to root. Then do-while will check with the other table elements until step 4.
In step 5 the for-loop changes the value of j and goes to the next smaller value, puts 531 on it and at the root puts 204. 23 00: 04: 33,600 -> 00: 04: 54,180 Then c has in its first run the value 1, checks and observes that the child is smaller than the parent and becomes 2, makes the first comparison and observes that the root is actually less than the 531 in the 2nd position.
So 531 goes to position 0. That is, at the root.
In the next do-while iterations it makes changes between sexes and children while keeping the root
in 531, until step 7.
In step 8, the root changes, becomes 489 and the range of the binary tree again decreases.
From what we observe, the exact same pattern you follow from the program to the end of its implementation.
That is, it alternates the largest element in position 0 each time with the element in the table showing j
it reduces the range, ie it goes from the more right to the left element and theoretically deletes it, and implements changes to children and parents if they are unequal.
That is, it also makes internal changes in the table if necessary
So pushing in essence the bigger, in price, elements, in the original positions of the table
This is done in the other input data files. This was the presentation of the implementation of the heapsort algorithm
It also makes a corresponding "push"
This was the presentation of the implementation of the heapsort algorithm
No comments:
Post a Comment