I can hear the subs in my dreams

[Shannon]

There is a state of natural awareness that "being conscious" overpowers and distracts from. In that state, you can hear, see and otherwise sense things that are otherwise "invisible", so to speak, to you and those around you.

The "conscious" mind, however, is like blaring a radio over a normal conversation. When you have that radio going, it will hide the conversation, much like subliminal masking does. When you dissociate or turn it off, you can hear the conversation again. In this analogy, the conversation would be the information you're getting from those senses that you normally are not aware of, or the full range of awareness from the senses you are aware of.

In other words, when you allow your subconscious mind to take the forefront you can be aware of what "it" is aware of. Sometimes, as the conscious and subconscious awarenesses are transitioning across, they share this information, and you can "consciously" perceive what the subconscious perceives.