Just to add my to this topic.

I can also relate to the 'clicking' sound. I have heard it as an external noise just by my left ear. Mostly heard when I am in bed at night.

Here are just some things that I have experienced:

Having my name called

Being gently touched by unseen hands

'cobweb' feeling over the face

pressure over crown area on head

Being in a room and the sudden loud crack sound being heard.

Waking in the night and being aware of many pairs of hands working on my body after I requested healing.

Awaking in the night and the feeling of bolts of energy being shot into my body through the crown area.

Hearing the sound of singing in the night near my right ear, but not able to discern where it is coming from, or what is being sang.

I just wonder if these things are more common than we think they are and in general, people do not speak about such phenomena, if they have experienced them