The new SR novella, Neat, also includes some soft descriptions of astral perception in the way the main character perceives magic, spells, spirits, and the like. And there's a story in Spells & Chrome that describes a mage who smells things instead of seeing them.
In my games, I've always gone with the aspect that how one interacts with mana and magic is largely based on the mage. So I ask players with Awakened or Emergent characters loosely how they want their senses to interpret things like assensing, shifts in local mana/resonance or background count, and the like.