Ok, that’s a paper that attempts to explain the feeling that a building might be haunted. There’s nothing in there about causing people to hallucinate. They talk about the supposed “resonant frequency of the eye”, but then they say:
The resonant frequency is the natural frequency of an object, the one at which it needs the minimum input of energy to vibrate. As you can see from above, any frequency above 8 Hz will have an effect and some sources quote 40Hz
If the values are that vague, then there is no resonant frequency. There may be frequencies that transmit vibrations to the eye, but with a big enough speaker you can cause anything to vibrate.
The closest the get to hallucinations is to say that "the eyeball would be vibrating which would cause a serious “smearing"of vision. It would not seem unreasonable to see dark shadowy forms caused by something as innocent as the corner of V.T.’s spectacles.” So, no hallucinations, just some blurry vision that might vaguely count as an excuse for seeing a ghost if your eye is vibrating significantly. Notice that that’s all just speculation, saying “this seems like it could be possible” rather than actually testing for that hypothesis.
As he was writing he became
aware that he was being watched, and a figure slowly emerged to his left. It was
indistinct and on the periphery of his vision but it moved as V.T. would expect a
person to. The apparition was grey and made no sound… V.T. was unable to see any detail and
finally built up the courage to turn and face the thing. As he turned the apparition
faded and disappeared.
He experienced a visual disturbance in his periphery manifesting as the false perception of a person. Even without it being interpreted as a person, that’s a textbook mild hallucination.
Once V.T. knew this he calculated the frequency of the standing sound
wave … 18.97Hz … plus or minus 10%
Table IV on page 212 of this book shows frequencies causing disturbance to the eyes
and vision to be within the band 12 to 27 Hz.
Most interestingly, a NASA technical report
mentions a resonant frequency for the eye as 18 Hz (NASA Technical Report
19770013810).
He cited two sources inline with ranges narrower than 8-40Hz which indicate that vision can be affected at the same frequencies he measured in the lab. He even noted that everyone would have slightly different resonant frequencies.
No, it’s not a full research paper, but it is the citation you requested.
He experienced a visual disturbance in his periphery manifesting as the false perception of a person
Which can’t be explained by an unfocused eye. They do a lot of speculating to come up with a reason why he could possibly see something out of the corner of his eye. But, that’s only the physical part of it. It doesn’t explain why he might think that whatever he was seeing was “a figure” and moved like a person.
That’s like saying that ghosts can be explained by wearing glasses with dirty lenses, then going into detail about how dirty lenses can cause someone to see something that isn’t there, while ignoring the elephant ghost in the room.
I’m not sure I understand. Peripheral hallucinations are a recognized type of hallucination, and hallucinations can involve anything from shadows or flashes of light through to full vivid imagery. It only requires perceiving anything that isn’t really there and but it feels real. The patterns or colors you see when you close your eyes are considered hallucinations too.
Ok, that’s a paper that attempts to explain the feeling that a building might be haunted. There’s nothing in there about causing people to hallucinate. They talk about the supposed “resonant frequency of the eye”, but then they say:
If the values are that vague, then there is no resonant frequency. There may be frequencies that transmit vibrations to the eye, but with a big enough speaker you can cause anything to vibrate.
The closest the get to hallucinations is to say that "the eyeball would be vibrating which would cause a serious “smearing"of vision. It would not seem unreasonable to see dark shadowy forms caused by something as innocent as the corner of V.T.’s spectacles.” So, no hallucinations, just some blurry vision that might vaguely count as an excuse for seeing a ghost if your eye is vibrating significantly. Notice that that’s all just speculation, saying “this seems like it could be possible” rather than actually testing for that hypothesis.
We had slightly different readings.
He experienced a visual disturbance in his periphery manifesting as the false perception of a person. Even without it being interpreted as a person, that’s a textbook mild hallucination.
He cited two sources inline with ranges narrower than 8-40Hz which indicate that vision can be affected at the same frequencies he measured in the lab. He even noted that everyone would have slightly different resonant frequencies.
No, it’s not a full research paper, but it is the citation you requested.
Which can’t be explained by an unfocused eye. They do a lot of speculating to come up with a reason why he could possibly see something out of the corner of his eye. But, that’s only the physical part of it. It doesn’t explain why he might think that whatever he was seeing was “a figure” and moved like a person.
That’s like saying that ghosts can be explained by wearing glasses with dirty lenses, then going into detail about how dirty lenses can cause someone to see something that isn’t there, while ignoring the
elephantghost in the room.I’m not sure I understand. Peripheral hallucinations are a recognized type of hallucination, and hallucinations can involve anything from shadows or flashes of light through to full vivid imagery. It only requires perceiving anything that isn’t really there and but it feels real. The patterns or colors you see when you close your eyes are considered hallucinations too.