A neuronal population has now been found that regulates two competing needs — hunger and pain. Urgent pain overrides hunger, but appetite-inducing neuronal activity dampens long-term pain responses to enable feeding.
Source: nature.com
The brain is complex; in humans it consists of about 100 billion neurons, making on the order of 100 trillion connections. It is often compared with another complex system that has enormous problem-solving power: the digital computer. Both the brain and the computer contain a large number of elementary units—neurons and transistors, respectively—that are wired into complex circuits to process information conveyed by electrical signals.
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