[steina vasulka, picture taken from performance screening at montevideo, during the (in)visible sounds exhibition]
The other person was described as young, of indeterminate sex, silent, motionless, and with a body posture identical to her own. The other person was located exactly behind her, almost touching and therefore within the bed that the patient was lying on.
A second electrical stimulation was applied with slightly more intensity, while the patient was sitting up with her arms folded. This time the patient felt the presence of a "man" who had his arms wrapped around her. She described the sensation as highly unpleasant and electrical stimulation was stopped.
Finally, when the patient was seated, electrical stimulation was applied while the patient was asked to perform language test with a set of flash cards. On this occasion the patient reported the presence of a sitting person, displaced behind her and to the right. She said that the presence was attempting to interfere with the test: "He wants to take the card; he doesnŐt want me to read." Again, the effect was disturbing and electrical stimulation was ceased.
Similar effects were found for different positions and postures when electrical stimulation exceeded 10 mA, at the left temporoparietal junction.' [Nature, 09.2006]
Not much is known about the parietal lobe, but it integrates sensory information, in particular, visuospatial processing. Damage to the left parietal lobe can lead to the 'Gerstmann's Syndrome': right-left are confused, verbal and mathematical memory affected, and objects cannot be perceived normally.
An experience entirely [ invisible ] to her attendings, due to electromagnetic stimulation of her brain .. out of her imagination, her shadow, a lost memory or a hallucination.. the fact remains it was her's only. An experience entirely [ invisible ] to her attending doctors and staff, and an experience brought about through electromagnetic stimulation of her brain.