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The brain is not only mysterious, but strange. Here are five weirdities about that 3 pounds of tofu-like material between your ears.
1). If you laid out all of the blood vessels in your brain end-to-end, they would stretch halfway to the moon (about 120,000 miles).
2) The brain itself is sensitive to light. So-called non-visual photoreceptors deep in the brain are thought to regulate circadian rhythms (daily activity cycle) and play a role in insomnia and other disorders that attend jet lag and working the late shift. Stroke patients illuminated with near-infrared light recover faster than those who do not receive treatment, and recent evidence suggests LED therapy with red and infrared light hastens recovery from concussions and strokes.
3) You are a fathead, literally. You brain is 60% fat.
4) There are taste receptors deep inside your brain. For example glucoreceptors in your hypothalamus detect changes in blood sugar (as well as sugar in cerebrospinal fluid) so that your brain can regulate blood sugar levels. It turns out that you also have taste receptors in your stomach and intestines. The chemosensors could play a key role in development of diabetes and obesity. There may even be taste receptors in the rectum and testicles, although no one knows for sure why.
Personally, I find the notion of taste buds in these weird places……distasteful!!! Yuk!!
5) Remember that image of a light bulb going off over a head when the head’s owner has a “bright idea?”
Well, it turns out that’s not so far fetched. Your brain generates about 20 watts of power, enough to turn on a decent-sized LED bulb!!
Well, that’s it for now.
Richard Feynman’s observation that the universe is not only weirder than we know but weirder than we can know, could very well apply to the part of the universe inside our skulls.
