Perception is the process of attaining awareness or understanding of the environment by organizing and interpreting sensory information coming from body receptors and sensory organs into CNS.
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What part of the brain controls depth perception?
Specifically the part of the brain that does depth perception based on binocular vision. I have searched all over the web and have turned up nothing. Is it the same part of the brain that processes ...
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What determined the evolution of different faces in humans?
The most distinctive characteristic of a human is it's face - it is unique among each individual (with the exception of identical twins). It is uncertain to me if whether we best identify other humans ...
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Perception of distant lights without glasses
I am fairly short-sighted and wear glasses pretty much all the time. Naively, I would expect that when I take my glasses off, the image I see should look very much the same as as a photograph that's ...
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What is the brightest color a light source that only emits blue frequency light can achieve?
Let's say there is a luminous light bulb that only emits blue light, and you (or a camera if you prefer) look at it from a close distance. Will the maximum brightness perceived not have any "white" to ...
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What determines the (perceived) frequency of tinnitus?
I noticed that every time I suffer temporary tinnitus after going to a very loud concert, the frequency I perceive is identical. I'd put it somewhere around 17KHz, but it's difficult to pin down with ...
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How can you test what color different people perceive?
If I would show someone a yellow object and ask them, "is this object yellow?"
That person would say "yes".
But I could never know if my perception of the color yellow is the same as that other ...
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Do siblings have a bias toward believing they look different from each other?
Anecdotally, I have observed (myself included) that siblings tend to think that they look less similar to each other than an unrelated observer would say. Is there any experimental data to back this ...
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131 views
Does coloring affect the perception of depth?
I have a question about the mechanics of human vision which may be as much of a physics question as it is a biology/physiology question. I noticed that if I try to imagine a clear blue daytime sky ...
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Why are pilots under the illusion of gaining altitude without doing so?
We had a lecture about the balancing systems of the body (mainly the otolith organ / semilunar canals) in which a case was described where a pilot crashed into a ship. He was supposed to keep his ...
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Why are (some) cats attracted by bleach?
(Sorry if this question is only partly biological)
I have noticed that several cats (including the one that keeps sleeping in my house), are fond of the odor of bleach (eau de Javel) and chlorine.
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Why are melodies/harmonies perceived as pleasurable by humans?
Is there any evolutionary advantage to finding melodies or harmonies pleasurable? Does the ear pick up these particular oscillating waves differently from other sounds, and if so, how does that affect ...
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How do we know the brain flips images projected on the retina back around?
Why do we turn images upside down again rather than dealing with them directly, still vertically rotated after passing through our lens?
I don't see how that would cause any problems, and how we'd ...
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Human perception of time depending on age
From what I can tell and what thus far all people with whom I discussed this subject confirmed is that time appears to "accelerate" as we age.
Digging a little, most explanations I found basically ...
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What portions of the brain have drastic changes in activation when we “sense” someone is there?
I was watching an old Arnold Schwarzenegger movie ("Commando") where he plays an elite soldier (surprise). An enemy tries to sneak up on him, and Arnold says that he smelled the other guy ...
