evocation can be used to to develope astral senses, but I'd focus more on altered states of consciousness for that.
One's astral senses are not much different than normal senses, just experienced from an altered state of mind. See learning astral projection is one thing. KNowling how to do it and knowing how to control yourself, is something different. Self control on the astral plains takes practice. The better you get at it the more you'll experience, the more real AP will seem and you'll even be able to use all of your regular senses. The difference between astral senses and regular one's is that you can use them in mundane situations. That said astral senses can be more like ESP.
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