AboutRalph Salier-Hellendag Expertise Science Fair Judge for many years and experience with robotics, biology, chemistry, industrial processes, metalurgy and metal forming.
Experience Science Fair Judge for many years and have helped several students get to state level competition. Most recently 2 of my students received state level awards and one went on to the nationals in Washington DC.
Education/Credentials BA Archaeology - Anthropology
MA Business Anthropology
Expert: Ralph Salier-Hellendag Date: 7/3/2008 Subject: Do human visual and colour receptor work differently? do human have the same visual experience
Question Hi, I got another question on human vision
-Does Human have the same colour vision receptor? Do they work differently in each human?
-Is it possible that we may perceive the same colour?
-How about size? Texture? Distance? Human look? Do we has totally different perception as each other? Mean we have different perception of this world??
-Is it possible that we may perceive them similarly? For e.g. when I point to a circle…does he saw a circle? Or something else?
-And Human seem to show attract in certain beautiful thing, for example, most man are attract to the certain beautiful girl. Why will some human seem to like the the same thing?
-Is it possible for human to share the same visual experience? Do we have the same visual receptor?
Is it possible to prove that?
Answer Hi Rambo,
Humans have color perception because of the types of receptors in the retina of the eye. Not all animals have both color and black and white receptors. Some have receptors that can see in the ultraviolet and others in the infrared spectrum. We can only see in the "visible" light spectrum. Some humans due to genetics, injury or illness may have altered color perception. If you have diabetes for instance, your color vision is altered by the illness.
Our perception of the world around us weather it is textural or depth perception can be different based on both education and cultural issues and patterns. So yes, we can look different to others while others may look "different to us". When it comes to specific shapes such as your circle, most humans will perceive it as a circle unless their vision is distorted by illness or some other visual problem.
And finally, based on cultural and educational factors, people from the same culture may "See" things in a similar way but due to differences in each human, we each see things just a bit differently from each other. It may be a different shade of color or shape or perception of "sameness".
So just like with taste, each person is different and will see things in a slightly different way. And since no two people are exactly alike (not even identical twins) we see things differently.
