Clairaudience
Perception of messages in thought forms from an entity who exists in another realm. You 'hear' what they are saying in though form messages. This is a form of channeling.
You may actually hear spirits talking or singing in your head yet there is no auditory sounds.
Many of us receive messages this way from spirit guides, or other entities. When a person loses a loved one they often receive messages from them. Often the messages is preceded by a floral fragrance.
Many of us become aware of this skill when we are in danger and that 'little inner voice' sends a warning. This causes us to respond instantly though we are not sure why. In times of crises we tend to listen and trust what our thoughts tell us.
When the information comes through, there may be a pressure on top of the head (opening of the crown chakra), body sensation . . . chills, tingles, hair standing on end, or other sensations.
Learning to listen to different entities is as much fun as learning to listen to different people. You soon can distinguish their voices (frequencies).
Did you ever stop to wonder where some of your silly thoughts come from during the course of your day? Spirits like to be silly!
Clairsentience
Experiencing other realities or entites through one or more of the five senses.
Examples
A tickling sensation on the hand or face during meditation.
A pressure on the top of the head when talking or connecting with a Spirit.
Hairs on the back of the neck standing on end when a spirit is near.
A sensation in the left side of the face when talking with spirit.
A floral smell...like gardenias.
Funny how smokers - especially cigar smokers - can be experienced as spirits by the smell of a "good cigar"!
A movement as a flick of white, purple, or blue light.
Seeing shadows in the periphery of your field of vision.
Clairgustance
Awareness of an entity on the other side by the sense of taste.
A sense experienced in the mouth.
It could by a favorite food associated with a deceased entity, or in many instances the way a deceased person prepared the food to taste.