Medical Mystery II
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yes thats e prob..if u can see with one eye, why need two?Originally posted by ndmmxiaomayi:No lah. The things will appear at a slightly different position and one-eyed people still can see. -
Oh..... not impairedOriginally posted by alfagal:which part of the brain in particular?
note: it doesnt impair, its not permanent. its inhibition (temperarliy)
Not quite sure which part of the brain, the cerebellum, I think. This was never studied in detailed when I did bio, so know nothing about it. -
Hmm, hard one.Originally posted by alfagal:yes thats e prob..if u can see with one eye, why need two? -
yup you got it gal..the cerebellum.Originally posted by ndmmxiaomayi:Oh..... not impaired
Not quite sure which part of the brain, the cerebellum, I think. This was never studied in detailed when I did bio, so know nothing about it.
btw: walking is a gross motor skill (inc running, jumping and hoping)
e.g of fine motor skills are: writing, buttoning up your blouse, tying shoe laces etc...
alcohol affects the cerebellem, which controls motor functions, both fine and gross motor skills. after the alcohol is no longer in the bloodstream, the functions of cerebellum goes back to normal -
Guessing for the eye question. Is it because we need 2 eyes to see the 3D world? One eye can only see 2D.
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hmm...Originally posted by ndmmxiaomayi:Guessing for the eye question. Is it because we need 2 eyes to see the 3D world? One eye can only see 2D.
so you mean when you watch tv with one eye, the human character appears flat unless u open two eyes to watch?
but good thinking there w regards to 2D and 3D...
what ever you see is a 2D image casted on your retina...but the brain processes it to become 3D.
think: do it now. close one eye. then open both...what is e difference? -
This one read from website. Because of prey-predator relationship. If you have one eye, you either can see your left or right. But if got two eyes, can see left and right and maximize the field of view. That is why our face is round (not circle that kind of round, but round enough to be called round)
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Not too much difference, except for the shifting of thingy I explained just now. You also see a narrower view of things. When things are viewed with two eyes, there are more things seen. However, when one eye is closed, only can see a percentage of what two eyes see.Originally posted by alfagal:hmm...
so you mean when you watch tv with one eye, the human character appears flat unless u open two eyes to watch?
but good thinking there w regards to 2D and 3D...
what ever you see is a 2D image casted on your retina...but the brain processes it to become 3D.
think: do it now. close one eye. then open both...what is e difference? -
yeah! got one of the reasons correct..Originally posted by ndmmxiaomayi:This one read from website. Because of prey-predator relationship. If you have one eye, you either can see your left or right. But if got two eyes, can see left and right and maximize the field of view. That is why our face is round (not circle that kind of round, but round enough to be called round)
we have two eyes so that we can have a larger visual field. ard 200 degrees..to see the span of your vision (peripheral) stretch both of ur hands straight, then to your sides inline with your ears..you will find that you can still see your arms...now, extend them abit more backwards..you still can see them for a lill more before they disappear...
for some pple, they can have more than 200 degrees of visual span.
now the second reason
CLUE: tracking of object -
Tracking of object??Originally posted by alfagal:yeah! got one of the reasons correct..
we have two eyes so that we can have a larger visual field. ard 200 degrees..to see the span of your vision (peripheral) stretch both of ur hands straight, then to your sides inline with your ears..you will find that you can still see your arms...now, extend them abit more backwards..you still can see them for a lill more before they disappear...
for some pple, they can have more than 200 degrees of visual span.
now the second reason
CLUE: tracking of object
Like see where the aeroplane has flown?
I think got to do with rotation of eyeball.
Got two eyes can see faster. -
SPECIAL MYSTERY QUESTION
Why is it that:
When you look at the rose in the day, the petals will look redder than in the evening.
Now, when you look at the same rose again in evening time, the stalk appears greener than in the day.
What is the name of this phenomenon? -
does it mean that you will see things happening at a slower speed when you use one eye?Originally posted by ndmmxiaomayi:Tracking of object??
Like see where the aeroplane has flown?
I think got to do with rotation of eyeball.
Got two eyes can see faster.
hmm nahz..
for this part of the question, you would need to do a lil more research
yes, one eg. is to see where the aeroplane is flying etc.. -
Originally posted by alfagal:
Psycological effect. Think so. But could be due to other reasons.
[b]SPECIAL MYSTERY QUESTION
Why is it that:
When you look at the rose in the day, the petals will look redder than in the evening.
Now, when you look at the same rose again in evening time, the stalk appears greener than in the day.
What is the name of this phenomenon?
[/b]
Because evening sky redder, so more red light reflected, the petals look redder.
In the day time, more green light reflected, so green stalk appears to be greener during daytime rather than evening. -
NEW MYSTERY
Imagine if you have the following:
A stick of cigarrette
A tablet of nicotine
Both have the same amount of nicotine.
Now, why is it that when one smokes the stick of cigarrette, the rush of nicotine is much faster than one who takes the tablet orally?
MYSTERY SOLVED -
Read this from wikipedia:Originally posted by alfagal:does it mean that you will see things happening at a slower speed when you use one eye?
hmm nahz..
for this part of the question, you would need to do a lil more research
yes, one eg. is to see where the aeroplane is flying etc..
When the muscles exert different tensions, a torque is exerted on the globe that causes it to turn. This is an almost pure rotation, with only about one millimeter of translation.
Saccades are rapid refocussing actions of the eyes. Many animals are able to quickly look at a point in space (prompted by memory, peripheral vision or an audio cue) without actively looking at anything in between. The eyes simply jerk into a new position. A bit like computer memory.
Vestibulo-ocular reflex. This vestibulo-ocular reflex seems like the answer. The above makes sense to me, but wonder got relationship as to why we need two eyes. Vestibulo-ocular reflex is like focusing on the aeroplane. We can see focus on the aeroplane and see where it has flown while turning our heads to the aeroplane. -
nahz..re read e qn again, think you got mixed up.Originally posted by ndmmxiaomayi:Psycological effect. Think so. But could be due to other reasons.
Because evening sky redder, so more red light reflected, the petals look redder.
In the day time, more green light reflected, so green stalk appears to be greener during daytime rather than evening. -
nope, it explains how the eyes work to track movements,Originally posted by ndmmxiaomayi:Read this from wikipedia:
When the muscles exert different tensions, a torque is exerted on the globe that causes it to turn. This is an almost pure rotation, with only about one millimeter of translation.
Saccades are rapid refocussing actions of the eyes. Many animals are able to quickly look at a point in space (prompted by memory, peripheral vision or an audio cue) without actively looking at anything in between. The eyes simply jerk into a new position. A bit like computer memory.
Vestibulo-ocular reflex. This vestibulo-ocular reflex seems like the answer. The above makes sense to me, but wonder got relationship as to why we need two eyes. Vestibulo-ocular reflex is like focusing on the aeroplane. We can see focus on the aeroplane and see where it has flown while turning our heads to the aeroplane.
but its doesnt say why do you need two eyes to track movements -
Originally posted by alfagal:
jus being lazy here.....
[b]NEW MYSTERY
Imagine if you have the following:
A stick of cigarrette
A tablet of nicotine
Both have the same amount of nicotine.
Now, why is it that when one smokes the stick of cigarrette, the rush of nicotine is much faster than one who takes the tablet orally?
[/b]
its because in tablet form....
paiseh, too lazy..dun wan type
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NEW MYSTERY
Just like the eyes,
Why do we need both ears to listen more effectively?
When do you think we will need both ears?
MYSTERY SOLVED -
hmmm guess its enough mysteries for now, shall retire for now...cya guys ard!
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Not the reflection of light? Then I don't know liao.Originally posted by alfagal:nahz..re read e qn again, think you got mixed up. -
Tired liao.........
Come back tomorrow to see answers......
Bye!! Good night!!!! -
Originally posted by alfagal:
Nasal route > Oral route (first past effect in the liver) but nasal route has the ability to bypass it hence gets absorbed faster into the bloodstream and into the blood brain barrier...
[b]NEW MYSTERY
Imagine if you have the following:
A stick of cigarrette
A tablet of nicotine
Both have the same amount of nicotine.
Now, why is it that when one smokes the stick of cigarrette, the rush of nicotine is much faster than one who takes the tablet orally?
[/b]
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Originally posted by alfagal:
1) Maximize visual field
[b]NEW MYSTERY
Humans have two eyes. But, the world appears the same even if you have one eye, and no problem walking around with one eye....
Qn: What are the uses of having two eyes?
There are two main reasons for this.[/b]
2) Ability to measure distance of objects precisely (depth perception)
3) Faint objects detection are enhanced, as binocular vision has an overlapping field of sight for both eyes
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Originally posted by alfagal:
Having both ears help to localize the direction of the sound.
[b]NEW MYSTERY
Just like the eyes,
Why do we need both ears to listen more effectively?
When do you think we will need both ears?[/b]