Colour perception

[ElRaja]

Do our brains interpret wavelengths of light as the same colour for different people?

If i had spent my whole life seeing long wavelength (reddish) visible light as being green and vice versa, would there be any way of me knowing that what i saw was different to everyone else other?

Can anyone think of a thought experiment which could theoretically prove or disprove that all humans (who do not suffer from visual impairment) have the same colour perception.

I have thought about this, quite a bit and searched online a little but have as yet failed to come to any answer at all, would love to hear some ideas, the wackier the better.

Disclaimer, i do not mean the sensitivity of our eyes to minute wavelength changes in visible light, but rather whether the colours in the images our brain creates from the specific wavelength of light that hitting our eyes is the same for two different people, i.e. is my red and your red the same?

[Black Zero]

Yes, they are same...for healthy eyes and brain

[x-man]

Colour is sensed by the cone cells in your retina. The cone cells are histologically same for Human being regardless of Race. And bio chemically. They have Iodopsin a pigment which sends exact signals to barain. Now brain just feels some electrical activity and put a name for that colour as red or Green. Brain doesn't see the colour actually. Cones sense.
If u need more explanations contact me by message.


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[x-man]

This is my field of study. You are welcome.


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[Poison]

Are you saying there's a possibility ... we're all really negros?

[ElRaja]

Originally Posted by x-man Colour is sensed by the cone cells in your retina. The cone cells are histologically same for Human being regardless of Race. And bio chemically. They have Iodopsin a pigment which sends exact signals to barain. Now brain just feels some electrical activity and put a name for that colour as red or Green. Brain doesn't see the colour actually. Cones sense. If u need more explanations contact me by message. Sent from my iPhone using Tapatalk

i get that, the bit i was wondering about was how the brain interprets the electrical message into the colour we percieve, and if we can be certain all healthy humans see the same "colour" for a given electric signal to the brain.

Originally Posted by Poison Are you saying there's a possibility ... we're all really negros?

im wondering if our brains show us the same colour for same wavelength light or not, i.e if someone saw humans as purple but they were taught that colour was called brown there whole life and had no other scale of comparing the colours, they would accept the purples humans as being brown.

[Poison]

I take it from the OP that you're colorblind (or something else dunno what its called) ... were you told from an early age that you had this issue or did you think red was green and green was red? I.e. I understand a cricket ball would look green to you ... is green your red or is red actually green?

[Badsha]

what if we see different colours?

What I see as "green" all my life is "red" to op and vice versa.


Is that what OP is asking? if so.. I also have this question.

[velu]

IMO its quite possible that two normal people see two colors differently
ex:- two people will be seeing the same blue color differently


http://www.sciencedaily.com/releases...1026082313.htm

http://www.bbc.co.uk/news/science-environment-14421303

[ElRaja]

Originally Posted by Poison I take it from the OP that you're colorblind (or something else dunno what its called) ... were you told from an early age that you had this issue or did you think red was green and green was red? I.e. I understand a cricket ball would look green to you ... is green your red or is red actually green?

i guess im finding it hard to articulate, lets say what you said is true, how would i confirm whether you and me saw the ball (how are brain interpreted the "red wavelength of light") as being the same colour?

Originally Posted by Badsha what if we see different colours? What I see as "green" all my life is "red" to op and vice versa. Is that what OP is asking? if so.. I also have this question.

yep, thats what im getting at.

[Poison]

Originally Posted by ElRaja how would i confirm whether you and me saw the ball (how are brain interpreted the "red wavelength of light") as being the same colour?

head just exploded /i'm out

[ElRaja]

was glad to find out im not the only person whos thought about this. apparently the technical term for perceptions we cannot describe in words is "qualia"

goes off on a bit of a tangent later, but still a good watch imo

[mithun_minhas]

Good thread.

May be brown people are actually black people. We just see it as brown.

I always thought I had some black in me.

I love big - - - I cannot lie

[Gotham Cronie]

Have thought about this many times. Always get weird looks when I bring it up though...