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brain
A brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. It is located in the head, usually close to the sensory organs for senses such as vision. It is the most complex organ in a vertebrate's body. In a human, the cerebral cortex contains approximately 14–16 billion neurons, and the estimated number of neurons in the cerebellum is 55–70 billion. Each neuron is connected by synapses to several thousand other neurons. These neurons typically communicate with one another by means of long fibers called axons, which carry trains of signal pulses called action potentials to distant parts of the brain or body targeting specific recipient cells.
Physiologically, brains exert centralized control over a body's other organs. They act on the rest of the body both by generating patterns of muscle activity and by driving the secretion of chemicals called hormones. This centralized control allows rapid and coordinated responses to changes in the environment. Some basic types of responsiveness such as reflexes can be mediated by the spinal cord or peripheral ganglia, but sophisticated purposeful control of behavior based on complex sensory input requires the information integrating capabilities of a centralized brain.
The operations of individual brain cells are now understood in considerable detail but the way they cooperate in ensembles of millions is yet to be solved. Recent models in modern neuroscience treat the brain as a biological computer, very different in mechanism from an electronic computer, but similar in the sense that it acquires information from the surrounding world, stores it, and processes it in a variety of ways.
This article compares the properties of brains across the entire range of animal species, with the greatest attention to vertebrates. It deals with the human brain insofar as it shares the properties of other brains. The ways in which the human brain differs from other brains are covered in the human brain article. Several topics that might be covered here are instead covered there because much more can be said about them in a human context. The most important is brain disease and the effects of brain damage, that are covered in the human brain article.
Had to double check it was not April 1 when reading this article. Scary.
Here's a quote from the article.
https://nypost.com/2024/01/29/business/elon-musks-neuralink-implants-brain-chip-in-first-human/
There is no chamber or barrel insert, no glowie or internet cops please leave my dog out of this. This is a printed and annealed carbon fiber barrel support which will get a .22 liner insert bonded in someday with an appropriate tax form or whatever. Cmmg 22 bolt conversion.
I think I should...
Is that a click baity enough "tittle" for you? Need another one?
"Oh.. The hu..monkeytee?"
Pretty cool tech.
All I really gotta know is do I get one of those stickers from the FCC that's states:
"FCC 15.19(a)(3), "This device complies with part 15 of the FCC Rules. Operation is subject to the...
I used to prowl arslmist( misspelling intended) almost as much as I currently haunt this site. There are definitely all manner of oddball prices used in for sale listings, but one that always made me wonder was "$420". You see, I just sort of assumed it was a code for the seller being down to...
Please pray for her.😔 her name is Julie.
57 year old wife has been in the hospital since July 3rd. She had to have her left below knee amputated but developed complications over a week and had to have that leg amputated above her knee.
Nurse called me as I was at work last night. She had her...
Fabulous tech. I could see a risk of additional, unintended uses though.
https://www.wsj.com/articles/brain-implant-lets-man-speak-after-being-silent-for-more-than-a-decade-11626296422?st=15riwto3c0qt7a7&reflink=desktopwebshare_permalink