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More importantly, a towel has immense psychological value. For some reason, if a strag (strag: non-hitch hiker) discovers that a hitch hiker has his towel with him, he will automatically assume that he is also in possession of a toothbrush, face flannel, soap, tin of biscuits, flask, compass, map, ball of string, gnat spray, wet weather gear, space suit etc., etc. Furthermore, the strag will then happily lend the hitch hiker any of these or a dozen other items that the hitch hiker might accidentally have “lost”. What the strag will think is that any man who can hitch the length and breadth of the galaxy, rough it, slum it, struggle against terrible odds, win through, and still knows where his towel is is clearly a man to be reckoned with.
Douglas Adams: The Hitchhiker’s Guide to the Galaxy
[4 days till towel day!!!] (via whereshallwehavelunch)

(via spetharrific)

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medicineisfun: How do neurons create memories? How do connections between neurons become strengthened, so that the connection is ‘remembered’? Scientists know that if they give an electrical impulse to a pair of neurons, the two will communicate more easily in the future. This process is known as long-term potentiation (LTP). The effect can last for weeks, or even months – long enough to make a memory. LTP is especially obvious in the hippocampus, one of the areas of the brain active in memory.

medicineisfun:

How do neurons create memories?

How do connections between neurons become strengthened, so that the connection is ‘remembered’? Scientists know that if they give an electrical impulse to a pair of neurons, the two will communicate more easily in the future. This process is known as long-term potentiation (LTP). The effect can last for weeks, or even months – long enough to make a memory. LTP is especially obvious in the hippocampus, one of the areas of the brain active in memory.

(via spetharrific)