Globe-Shaped Ghost?

 At the site www.adcrp.org we have in the Publications section several interesting documents. One is entitled "Investigation of the phenomenology and impact of spontaneous and direct After-Death Communications (ADCs)."  We have quite an interesting document that can be read here.  It's a document based on a large survey of people reporting "After Death Communication." On page 13 we read that 46% claimed to have a mysterious sighting of a deceased person.  These visual experiences varied.  On page 17 we read this section:

"Apparitions are sometimes surrounded by light. We asked if the deceased seemed brighter than their environment, in other words, if a light surrounded them or came from them. This was the case for just over a third of our sample. 

 For 34.7% apparition surrounded by light, 11.2% unsure, and for 54.0% apparition not surrounded by light. Here are some examples of luminous apparitions:

•  “It looked like a photo of her surrounded by a circle of sun rays.”
•  “Light filled body.”
•  “Globe of light."

The next page has this interesting part:

"We have asked those surveyed how the deceased appeared to them.  For 59.8% apparition already there when perceived, for 28.5% materializing right before their eyes, and 11.8% unsure. We enquired how the apparition disappeared.  For 14.4% fading gradually, for 28.1% dissolving instantly, for 18.0% not there anymore when experient blinked, 10.9% unsure, and 28.5% other."