Stages of processing of the senses in human and animal systems, such as vision, auditory, vestibular, and pain senses.
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How are our senses dimmed during sleep?
Our senses are not as sensitive during sleep compared to wake. There is an arousal threshold during sleep that only when it is overcome will it wake a person up. My question is how is this arousal ...
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Why does getting certain chemicals in cuts hurt?
More specifically, shampoo. What are the mechanics of detecting a noxious chemical stimulus in terms of which receptors recognise what, how do they do it, and how is this information relayed to the ...
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How is olfactory acuity rated/measured?
Acuity of one's sight is rated on the 20/20 scale. An online search appeared to indicate there is no comparable 'standard' to rate olfactory acuity.
How is acuity of the olfactory system rated?
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Why Do Nerve Signals Get Crossed?
First off, I don't know if this is a normal healthy thing to occur. There have been many times where I have an itch on say my arm and I scratch it, only to feel the scratching elsewhere on my body. I ...
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55 views
Will a completely removed cat whisker grow back?
I just accidentally pulled out, while playing, my cat's whisker entirely, follicle and all. I feel terribly as I know she is a kitten and whiskers are rooted deep in a place rich in nerves. I'm ...
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Do humans have chemosensors for nutrients or chemicals?
I'm reading about chemoreceptors on Wikipedia, and see that the typical ones are mentioned: taste, smell, co2. I would like to learn more about the other kinds of chemoreceptors that humans may ...
