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This book, which covers Visions and hallucinations, explains what causes them and summarises how many hallucinations have been caused by each event or activity. It also provides specific help with questions people have asked us, such as ‘Is my medication giving me hallucinations?’.

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Observations placeholder

Muldoon, Sylvan - Getting back into the body



Type of Spiritual Experience


A description of the experience

Projection of the Astral Body – Muldoon and Carrington 1929

Slight repercussions, accompanying natural sleep, or even the more severe repercussions – like those experienced in falling dreams - will often be accompanied by a peculiar noise which seems close to the ear or inside the head. A very common one is " pop! " as of a toy balloon burst close to the ear.

Another is a loud "sizz" and sometimes a sound inside the brain, causing that organ to vibrate. Another is a crackling sound, not unlike-the noise made by an electric spark when the positive and negative posts of a battery are touched together. This sound is often heard just at the take off of a projection, as well as at the moment of coincidence, and seems to be in the head, near the back part of the skull.

Still another commonly heard sound, at the time of re-coincidence, is a  " zing," as if a string were tightly drawn through the head and then struck, as one might strike the strings of a guitar. At other times the subject may hear a distinct word uttered ; it seems very close to the ear, and even, at times, as though the word were spoken right inside the head

The striking thing about these sounds is the way in which they can be felt – yes actually felt - moving about inside one's head; one’s brain seems to shake like the diaphragm of a drum which vibrates when it is struck and resounds

The source of the experience

Muldoon, Sylvan

Concepts, symbols and science items

Science Items

Activities and commonsteps



Bradycardia - slow heart rate