They cause the person to lose all control of their body. The person may well be aware of what is happening, but they drop too the ground and can't control their arms or legs or tongues. If she was injured in bed with the stun gun, she would not have been able to fight with the man or cry out for her parents as he took her from her room.<P>But the effects do not last forever - and the killer was with her for some period of time. he carried her to the basement and made that garrote - - no one knows how long he was with her before she died. Could have been 10 minutes, could have been an hour.