G. M. Glasking, an Australian journalist, popularized this technique in several books, starting with Windows of the Mind [Gla74]. Three people are needed: one as subject, and two to prepare him. The subject lies down comfortably on his back in a warm and darkened room. One helper massages the subject’s feet and ankles, quite firmly, even roughly, while the other take his head. Placing the soft part of his clenched fist on the subject’s forehead he rubs it vigorously for several minutes. This should make the subject’s head buzz and hum, and soon he should begin to feel slightly disorientated. His feet tingle and his body may feel light or floaty, or changing shape.
When this stage is reached, the imagery exercises begin. The subject is asked to imagine his feet stretching out and becoming longer by just an inch or so. When he says he can do this he has to let them go back to normal and do the same with his head, stretching it out beyond its normal position. Then, alternating all the time between head and feet, the distance is gradually increased until he can stretch both out to two feet or more. At this stage it should be possible for him to imagine stretching out both at once, making him very long indeed, and then to swell up, filling the room like a huge balloon. All this will, of course, be easier for some people than others. It should be taken at whatever pace is needed until each stage is successful. Some people complete this part in five minutes, some people take more than fifteen minutes.
Next he is asked to imagine he is outside his own front door. He should describe everything he can see in detail, with the colors, materials of the door and walls, the ground, and the surrounding scenery. He has then to rise above the house until he can see across the surrounding countryside or city. To show him that the scene is all under his control he should be asked to change it from day to night and back again, watching the sun set and rise, and the lights go on or off. Finally he is asked to fly off, and land wherever he wishes. For most subjects their imagery has become so vivid by this stage that they land somewhere totally convincing and are easily able to describe all that they see.
You may wonder how the experience comes to an end, but usually no prompting is required; the subject will suddenly announce ‘I’m here,’ or ‘Oh, I’m back,’ and he will usually retain quite a clear recollection of all he said and experienced. But it is a good idea to take a few minutes relaxing and getting back to normal. It is interesting that this technique seems to be very effective in disrupting the subject’s normal image of his body. It then guides and strengthens his own imagery while keeping his body calm and relaxed.