You have it exactly right, ^JB^.
Golf courses are uniformly beautiful rolling land and everyone has their head down looking at a little dimpled ball.
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Electro-encepholo-graph -- An electrical-brain-graphic --
"electro" means electricity
"encephelo" means of the brain
"graph" means record"
We call these EEG's most of the time in the states because it is such a long word.
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Hippocampus -- from a Roman mythical beast using the Greek words "hippo" meaning horse and "campe" meaning curve. Apparently that part of the brain, when sliced down the middle had a resemblance to this fantasy creature.
There's a photograph of a Roman coin here that shows the beast:
http://www.littletoncoin.com/html/Ancients_B&P.htm
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The word "Hippopottamus" is from a similar root with the original meaning horse of the river.