The last two are either ignored or unknown by the masses. Proportion (if I'm spelling that right) is your sense of where your body is without actually seeing or feeling it. Yes, this is a real sense, and we're just now discovering the horrible effects when this sense is lost. Without it, you wouldn't be able to walk on two legs. Emotion is a sense too, and everyone knows the heart feels what the heart feels, so why isn't it referenced in any text books? What are these guys, stupid?
The Eighth sense, as far as I can tell, is your basic ESP, but I rather doubt it exists despite personal anecdote. Draw your own conclusions.
And Peace Ouch.