
Originally Posted by
Raype
In this case, it's sort of something. A positron is more or less an electron that carries a positive charge as opposed to a negative one. Which is pretty ass backwards from a physics perspective. Since it runs opposite to matter as we understand it in a traditional sense, it's labelled as an anti-matter particle. Especially once you factor in that throwing certain types of matter at it makes them explode.
As for how it goes with biology, our nervous system is a giant series of electrical wires. Electricity is a bunch of electrons. One of the most important substances for lifeforms as we know it is Sodium (salt, basically). Which is also frequently called an electrolyte for those of you who suck down Gatorade or spend much time in a gym. A major reason for why it's necessary is because you can use it to transmit electricity, which is exactly what it does in the central nervous system. Which is part of the reason why if you don't have any salt in you, you kinda, y'know, DIE. Fortunately it's an exceedingly common substance that you're eating heaping piles of even without realizing.
Now if you use positrons instead, you'd have to totally rewrite your biology. And your entire nervous system. Since throwing something with a negative charge at something with a positive charge is pretty much like the vinegar/baking soda trick. If you had a positronic brain, that'd be happening inside your skull.
Obviously, that's not going to keep you alive for long. Which is why positrons aren't all over your anatomy. Instead, the only "positive" particles are protons. Which have none of the "electrical charge" properties that make positrons and electrons so volatile.