Do you Tetrachromacy?

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Re: Do you Tetrachromacy?

Postby MagsJ » Mon Aug 19, 2019 3:22 pm

surreptitious75 wrote:Would have be an advantage to predators seeking out prey whose defence mechanism was camouflage
Also to those able to differentiate between lethal and non lethal species who had very similar features

All I know, is that I see colours within a colour or surrounding an object.

Are you calling me a predator Surreptitious75? :lol:

I'm not good with bright lights or sunlight.. never have been, and wonder if this is part of the condition. Google says..?
The possibility of anything we can imagine existing is endless and infinite.. ~MagsJ

I haven't got the time to spend the time reading something that is telling me nothing, as I will never be able to get back that time, and I may need it for something important at some point in time.. Huh!? ~MagsJ

You’re suggestions and I just simply don’t mix.. like oil on water, or a very bad DJ ~MagsJ

Examine what is said, not him who speaks ~Arab proverb

aes Sanātana Dharma Pali: the eternal way ~it should not be rigid, but inclusive of the best of all knowledge for the sake of Ṛta.. which is endless.
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Re: Do you Tetrachromacy?

Postby MagsJ » Mon Aug 19, 2019 3:30 pm

Maia wrote:I haven't given up on life and I don't require anyone's pity.

There's something to be said for arranged marriage here.. not marriage by force, but more a match-making of sorts.

Some events companies hold mixers.. disguised as networking drinks, but at least they make it easier to meet someone with the option to date.
The possibility of anything we can imagine existing is endless and infinite.. ~MagsJ

I haven't got the time to spend the time reading something that is telling me nothing, as I will never be able to get back that time, and I may need it for something important at some point in time.. Huh!? ~MagsJ

You’re suggestions and I just simply don’t mix.. like oil on water, or a very bad DJ ~MagsJ

Examine what is said, not him who speaks ~Arab proverb

aes Sanātana Dharma Pali: the eternal way ~it should not be rigid, but inclusive of the best of all knowledge for the sake of Ṛta.. which is endless.
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Re: Do you Tetrachromacy?

Postby Maia » Mon Aug 19, 2019 3:34 pm

MagsJ wrote:
Maia wrote:I haven't given up on life and I don't require anyone's pity.

There's something to be said for arranged marriage here.. not marriage by force, but more a match-making of sorts.

Some events companies hold mixers.. disguised as networking drinks, but at least they make it easier to meet someone with the option to date.


Sounds a bit depressing to be honest.
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Re: Do you Tetrachromacy?

Postby MagsJ » Mon Aug 19, 2019 3:57 pm

Lol.. I've been to some fun parties over the years, but I did go with friends, so that might be why.. it might not have been so much, if I had gone alone.

You can't meet anyone if you don't go out.. as they say.
The possibility of anything we can imagine existing is endless and infinite.. ~MagsJ

I haven't got the time to spend the time reading something that is telling me nothing, as I will never be able to get back that time, and I may need it for something important at some point in time.. Huh!? ~MagsJ

You’re suggestions and I just simply don’t mix.. like oil on water, or a very bad DJ ~MagsJ

Examine what is said, not him who speaks ~Arab proverb

aes Sanātana Dharma Pali: the eternal way ~it should not be rigid, but inclusive of the best of all knowledge for the sake of Ṛta.. which is endless.
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Re: Do you Tetrachromacy?

Postby Maia » Mon Aug 19, 2019 4:34 pm

MagsJ wrote:Lol.. I've been to some fun parties over the years, but I did go with friends, so that might be why.. it might not have been so much, if I had gone alone.

You can't meet anyone if you don't go out.. as they say.


I work most evenings, which can be a bit of a problem.
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Re: Do you Tetrachromacy?

Postby MagsJ » Mon Aug 19, 2019 5:34 pm

You could fit something in around your schedule.. every time I've gone to go out lately, it's rained, which dampened my mood to go out.. literally lol.
The possibility of anything we can imagine existing is endless and infinite.. ~MagsJ

I haven't got the time to spend the time reading something that is telling me nothing, as I will never be able to get back that time, and I may need it for something important at some point in time.. Huh!? ~MagsJ

You’re suggestions and I just simply don’t mix.. like oil on water, or a very bad DJ ~MagsJ

Examine what is said, not him who speaks ~Arab proverb

aes Sanātana Dharma Pali: the eternal way ~it should not be rigid, but inclusive of the best of all knowledge for the sake of Ṛta.. which is endless.
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Re: Do you Tetrachromacy?

Postby Maia » Mon Aug 19, 2019 5:44 pm

MagsJ wrote:You could fit something in around your schedule.. every time I've gone to go out lately, it's rained, which dampened my mood to go out.. literally lol.


I try. I've been to a number of festivals when I have time off, for example. Often camping, which I really enjoy.
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Re: Do you Tetrachromacy?

Postby surreptitious75 » Mon Aug 19, 2019 5:58 pm

You do not have to go out anymore to just meet someone because the whole world is at your fingertips
Now one cannot guarantee success but in terms of sheer quantity there has never been so much choice
Though eventually you need to meet someone in the flesh but just not straight away unless you want to
A MIND IS LIKE A PARACHUTE : IT DOES NOT WORK UNLESS IT IS OPEN
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Re: Do you Tetrachromacy?

Postby Maia » Mon Aug 19, 2019 5:59 pm

surreptitious75 wrote:You do not have to go out anymore to just meet someone because the whole world is at your fingertips
Now one cannot guarantee success but in terms of sheer quantity there has never been so much choice
Though eventually you need to meet someone in the flesh but just not straight away unless you want to


I've spoken to quite a lot of nutters online, so it's definitely not my preferred option.
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Re: Do you Tetrachromacy?

Postby surreptitious75 » Mon Aug 19, 2019 6:11 pm

I am not sure that the odds on meeting fewer of them in real life are actually any more favourable
So you take a risk either way or else remain single forever but that is a decision only you can make
A MIND IS LIKE A PARACHUTE : IT DOES NOT WORK UNLESS IT IS OPEN
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Re: Do you Tetrachromacy?

Postby MagsJ » Mon Aug 19, 2019 7:27 pm

Better to find someone through a common network or social circle, then you may know a little about each other.. at the very least, which is a better starting-point than not.

The only thing left is to hope 'the feeling is mutual' as there's nothing worse than a one-sided attraction.

Meeting someone is the easy part, meeting someone you like.. not so much.
The possibility of anything we can imagine existing is endless and infinite.. ~MagsJ

I haven't got the time to spend the time reading something that is telling me nothing, as I will never be able to get back that time, and I may need it for something important at some point in time.. Huh!? ~MagsJ

You’re suggestions and I just simply don’t mix.. like oil on water, or a very bad DJ ~MagsJ

Examine what is said, not him who speaks ~Arab proverb

aes Sanātana Dharma Pali: the eternal way ~it should not be rigid, but inclusive of the best of all knowledge for the sake of Ṛta.. which is endless.
User avatar
MagsJ
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Re: Do you Tetrachromacy?

Postby Urwrongx1000 » Tue Aug 20, 2019 8:31 am

Maia wrote:I haven't given up on life and I don't require anyone's pity.

Kinda sounded like it, not having children is basically Extinction, loss of pride and self-worth.
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Re: Do you Tetrachromacy?

Postby promethean75 » Tue Aug 20, 2019 8:32 pm

Tetrachromate this, bitches!

https://streamable.com/nvc45
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Re: Do you Tetrachromacy?

Postby MagsJ » Tue Aug 20, 2019 9:06 pm

promethean75 wrote:https://streamable.com/nvc45

That's doing it, for me, bay-bee =P~

:lol:

I guess an array of colours, is like porn, to the Tetrachromat's eyes.. now I feel so dirty. :|
The possibility of anything we can imagine existing is endless and infinite.. ~MagsJ

I haven't got the time to spend the time reading something that is telling me nothing, as I will never be able to get back that time, and I may need it for something important at some point in time.. Huh!? ~MagsJ

You’re suggestions and I just simply don’t mix.. like oil on water, or a very bad DJ ~MagsJ

Examine what is said, not him who speaks ~Arab proverb

aes Sanātana Dharma Pali: the eternal way ~it should not be rigid, but inclusive of the best of all knowledge for the sake of Ṛta.. which is endless.
User avatar
MagsJ
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Re: Do you Tetrachromacy?

Postby promethean75 » Wed Aug 21, 2019 12:50 am

let me guess; faster, faster!? i could move the cam vertically too, if you want.

for real though, the clerks at the sherwin williams thought i was a crazy man when they saw me do that.
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Re: Do you Tetrachromacy?

Postby MagsJ » Wed Aug 21, 2019 1:44 am

promethean75 wrote:let me guess; faster, faster!? i could move the cam vertically too, if you want.

..that would be telling lol, but seeing that colour chart really was appeasing to the senses. My bro only saw one shade of red in an apple I was buying, whereas I saw many reds.. he thought I was odd, in my awe of it. :lol:

for real though, the clerks at the sherwin williams thought i was a crazy man when they saw me do that.

Philosophy.. making us do crazy things in public, that the average person would never do! Same with Art.. Art made me do it, I swear.. but I never cared, if they didn't care, for the wherefores of why.
The possibility of anything we can imagine existing is endless and infinite.. ~MagsJ

I haven't got the time to spend the time reading something that is telling me nothing, as I will never be able to get back that time, and I may need it for something important at some point in time.. Huh!? ~MagsJ

You’re suggestions and I just simply don’t mix.. like oil on water, or a very bad DJ ~MagsJ

Examine what is said, not him who speaks ~Arab proverb

aes Sanātana Dharma Pali: the eternal way ~it should not be rigid, but inclusive of the best of all knowledge for the sake of Ṛta.. which is endless.
User avatar
MagsJ
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Re: Do you Tetrachromacy?

Postby MagsJ » Sun May 15, 2022 7:25 pm

_
Tetrachromacy (‘Super Vision’)

Medically reviewed by Sara N. Frye, OD, MPH, FAAO — Written by Tim Jewell — Updated on May 13, 2022


What is tetrachromacy?

Your eyes have components called rods and cones that help you see light and colors. They’re located inside the retina, the layer of thin tissue at the back of your eyeball near your optic nerve.

Rods and cones are crucial to sight. Rods are sensitive to light and are important for allowing you to see in the dark. Cones are responsible for your ability to see colors.

Most people, as well as other primates like gorillas, orangutans, and chimpanzees (and even some marsupials), only see color through three different types of cones. This color visualization system is known as trichromacy (“three colors”).

But some evidence exists that there are people who have four distinct color perception channels. This is known as tetrachromacy.

Tetrachromacy is thought to be rare among human beings. Research has shown that it’s more common in women than in men. A 2010 study suggested that nearly 12 percent of women may have this fourth color perception channel.

Men aren’t as likely to be tetrachromats. They’re actually more likely to be colorblind, or unable to perceive as many colors as women. This is due to inherited abnormalities in their cones.

Let’s learn more about how tetrachromacy stacks up against typical trichromatic vision, what causes tetrachromacy, and how you can find out if you have it.


Tetrachromacy vs. trichromacy

The typical person has three types of cones in the retina that allow them to see various colors on the spectrum:

• Short-wave (S) cones: sensitive to colors with short wavelengths, such as purple and blue
• Middle-wave (M) cones: sensitive to colors with medium wavelengths, such as yellow and green
• Long-wave (L) cones: sensitive to colors with long wavelengths, such as red and orange

This is known as the theory of trichromacy. Photopigments in these three types of cones give you the ability to perceive the full spectrum of color.

Photopigments are made of a protein called opsin and a molecule that’s sensitive to light. This molecule is known as 11-cis retinal. Different types of photopigments react to certain color wavelengths that they’re sensitive to, which results in your ability to perceive those colors.

Tetrachromats have a fourth type of cone featuring a photopigment that allows perception of more colors that aren’t on the typically visible spectrum. The spectrum is better known as ROY G. BIV (Red, Orange, Yellow, Green, Blue, Indigo, and Violet).

The existence of this extra photopigment may allow a tetrachromat to see more detail or variety within the visible spectrum. This is called the theory of tetrachromacy.

While trichromats can see about 1 million colors, tetrachromats may be able to see an incredible 100 million colors, according to Jay Neitz, PhD, an ophthalmology professor at the University of Washington, who has studied color vision extensively.


Causes of tetrachromacy

Here’s how your color perception typically works:

1. The retina takes in light from your pupil. This is the opening in the iris, the colored part of your eye.
2. Light and color travel through the lens of your eye and become part of a focused image projected onto the retina.
3. Cones turn light and color information into three separate signals: red, green, and blue.
4. These three types of signals are sent to the brain and processed into a mental awareness of what you’re seeing.

The typical human being has three different types of cones that divide up visual color information into red, green, and blue signals. These signals can then be combined in the brain into a total visual message.

Tetrachromats have one extra type of cone that allows them to see a fourth dimensionality of colors. It results from a genetic mutation.

And there’s indeed a good genetic reason why tetrachromats are more likely to be women. The possibility of a tetrachromacy mutation is only passed through the X chromosome.

Women get two X chromosomes, one from their mother (XX) and one from their father (XY). They’re more likely to inherit the necessary gene mutation from both X chromosomes.

Men only get one X chromosome. Their mutations usually result in anomalous trichromacy or color blindness. This means that either their M or L cones don’t perceive the right colors.

A mother or daughter of someone with anomalous trichromacy is most likely to be a tetrachromat. One of her X chromosomes may carry normal M and L genes. The other likely carries regular L genes as well as mutated L gene passed through a father or son with anomalous trichromacy.

One of her two X chromosomes will be expressed in some cone cells, while the other X chromosome will be expressed in others. This results in a retinal mosaic composed of four different cone types, because of the variety of different X genes passed on from both mother and father.

Some species, including humans, simply don’t need tetrachromacy for any evolutionary purpose. They’ve almost lost the ability altogether. In other species, tetrachromacy is all about survival.

Several bird species, such as the zebra finchTrusted Source, need tetrachromacy to find food or choose a mate. And the mutual pollination relationship between certain insects and flowers has caused plants to develop more complex colorsTrusted Source.

This, in turn, has caused insects to evolve to see these colors. That way, they know exactly which plants to choose for pollination.


Tests used to diagnose tetrachromacy

It may be challenging to know if you’re a tetrachromat if you’ve never been tested. You may just take your ability to see extra colors for granted because you have no other visual system to compare yours to.

The first way to find out your status is by undergoing genetic testing. A full profile of your personal genome can find the mutations on your genes that may have resulted in your fourth cones. A genetic test of your parents can also find the mutated genes that were passed on to you.

But how do you know if you’re actually able to distinguish the extra colors from that extra cone?

That’s where research comes in handy. There are several ways that you can find out if you’re a tetrachromat.

The color matching test is the most significant test for tetrachromacy. It goes like this in the context of a research study:

1. Researchers present study participants with a set of two mixtures of colors that will look the same to trichromats but different to tetrachromats.
2. Participants rate from 1 to 10 how closely these mixtures resemble each other.
3. Participants are given the same sets of color mixtures at a different time, without being told that they’re the same combinations, to see if their answers change or stay the same.

True tetrachromats will rate these colors the same way every time, meaning that they can actually differentiate between the colors presented in the two pairs.

Trichromats may rate the same color mixtures differently at different times, meaning that they’re just choosing random numbers.
https://www.healthline.com/health/tetrachromacy
The possibility of anything we can imagine existing is endless and infinite.. ~MagsJ

I haven't got the time to spend the time reading something that is telling me nothing, as I will never be able to get back that time, and I may need it for something important at some point in time.. Huh!? ~MagsJ

You’re suggestions and I just simply don’t mix.. like oil on water, or a very bad DJ ~MagsJ

Examine what is said, not him who speaks ~Arab proverb

aes Sanātana Dharma Pali: the eternal way ~it should not be rigid, but inclusive of the best of all knowledge for the sake of Ṛta.. which is endless.
User avatar
MagsJ
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Re: Do you Tetrachromacy?

Postby MagsJ » Sun May 15, 2022 7:29 pm

_
Colour vision tests:

https://www.buzzfeed.com/lorynbrantz/on ... an-read-th [8/8]

https://www.buzzfeed.com/andyneuenschwa ... n-hue-quiz [9/10]

4CB555CB-991D-4913-A3BB-C6A781AF24CD.jpeg
4CB555CB-991D-4913-A3BB-C6A781AF24CD.jpeg (78.02 KiB) Viewed 216 times
The possibility of anything we can imagine existing is endless and infinite.. ~MagsJ

I haven't got the time to spend the time reading something that is telling me nothing, as I will never be able to get back that time, and I may need it for something important at some point in time.. Huh!? ~MagsJ

You’re suggestions and I just simply don’t mix.. like oil on water, or a very bad DJ ~MagsJ

Examine what is said, not him who speaks ~Arab proverb

aes Sanātana Dharma Pali: the eternal way ~it should not be rigid, but inclusive of the best of all knowledge for the sake of Ṛta.. which is endless.
User avatar
MagsJ
The Londonist: a chic geek
 
Posts: 25038
Joined: Wed Nov 01, 2006 2:59 pm
Location: Suryaloka / LDN Town

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