Over time, the "groove," or ghost, will get weaker, and will eventually disappear entirely. However, hauntings can be recharged under the right circumstances, especially in any area where there is a great amount of energy transference. If a sentimental object of the dead person is brought into the area, the apparitions can be recharged. However, there are a few other reasons that may cause a ghost recording to be recharged. These circumstances involve aura similarities, renovations, large electrical fields, and se?ances or Ouija boards.
The aura of a living individual may be very similar to that of the person who has left the ghost recording or spirit. Considering how similar the aura field is, the recording or spirit may actually borrow some of this energy from the person. This makes the ghost or spirit stronger while leaving the person feeling very fatigued and drained for hours. The energy level of the person will eventually be renewed given time and rest.
Renovations to a Physical Place
In the case of an earthbound spirit that is attempting to communicate, its efforts may be redoubled by any major changes to its surroundings. This is especially the case if the renovations have something to do with an unkept promise. For example, if a person promised to keep a family house in good repair and that place is being demolished to build something else, the appearance of the spirit may increase dramatically, and do as much as possible to prevent the new house from being completed.
Large Electrical Fields or Disturbances
At this point, I would like to offer one word of caution about attempting to contact spirits in this fashion. You may be opening a vortex or doorway for malevolent spirits instead of the ones you were originally attempting to contact. This is especially dangerous with people who do not know exactly what they are doing in regards to se?ances and Ouija boards. I would highly recommend to anyone investigating a haunting not to use these forms of communication, or get involved in any investigation in which the eyewitnesses used either.
Excerpted from How to Be a Ghost Hunter, by Richard Southall