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. 2017 Mar 11;2017(1):nix001. doi: 10.1093/nc/nix001

Table 3.

Examples of exosensory images and the external sensory stimuli affecting them categorized by stimulus modality and type

Image (#parts, #words) External stimulus Stimulus modality Stimulus type Image focus Clarifications
1. A woman is holding her nose with her L hand, her R hand/arm sweep down in front of her face. Suddenly, a hand (and arm) comes out of nowhere and slaps down on the bare forearm of another arm with a loud “whop” (2, 43). A “whop” sound coming from the tennis court near where I was lying in the grass woke me. Auditory Phasic Other The sound from the tennis shot matched precisely the timbre, timing and apparent direction of the sound in the image.
2. A bright, multi-colored clown/jester suddenly somersaults with a snapping, elastic motion. His black suit had patches of red, yellow, green, blue, and other colors (1, 24). Dozing while sitting on a couch near an IKEA cash register, which abruptly sounds with a loud clatter and wakes me. Auditory Phasic Other The somersault coincided with the noise. I was surrounded by brightly colored sofas, pillows, and other furniture.
3. A hand puts a file into a white box; a black cat's head suddenly emerges from behind the edge of a table (2, 22). A stapler suddenly sounds in the next office. Auditory Phasic Other The cat’s head emerges at the same time as the stapler sounds. The sound and the cat image seem strangely overlaid and incongruous.
4. A heavy door made of wood suddenly swings open to the R and slams against the corner of a counter top (1, 21). The conference speaker had made a thudding sound by hitting the microphone. Auditory Phasic Other The thud sound corresponded exactly with the door slam in the image. A slide on the screen just pre-image depicted a closed, large, brown wooden door.
5. I see a young man’s legs and feet as he trips over something and falls to the right in my visual field. Almost a caricature of a fall (1,28). A loud tearing sound, like Velcro ripping, from the seat behind me, woke me up. Airplane had been going through occasional turbulence. Auditory/somatic Phasic Other The fall coincided exactly with the ripping sound. Falling imagery is similar to other images observed during turbulence.
6. My upper body was in a seated, doubled over position, twisted toward the L and downward. I was in the act of pulling myself into an upright posture (1, 28). Airplane dipped and rose quickly giving a feeling of “stomach rising” (like going over a hill in a car quickly). Vestibular/somatic Phasic Self The pulling up sensation coincided with the sudden dip/rise of the airplane.
7. A 5- to 6-year-old girl in an aisle—an airplane aisle perhaps—falls forward onto her hands and knees. She has dish-pan brown, shoulder length hair, and a hair band. The aisle is reddish (1, 33). The airplane made an unexpected “dip” during final descent that woke me up. Vestibular/somatic Phasic Other The girl’s fall occurred at the instant the plane dipped.
8. A woman (face indistinct) seated across from me suddenly spills red liquid from a glass onto her lap. I saw dark stains on her beige dress (1, 26). The airplane made an unexpected “dip” during final descent that woke me up. Vestibular/somatic Phasic Other The spill coincided with the sudden dip. The woman seated to my R had a glass of wine served to her earlier in the flight.
9. I felt some people pass very close by on my L, from back to front, as if on a sidewalk. Then a clear image of a bicycle collapsing in a pile on the ground, the driver falling to the L, face first on top of the bike (2, 47). The airplane slowed abruptly, albeit very slightly, to begin final descent. Vestibular/somatic Phasic Other The bicycle collapse coincided with the sudden slowing of the airplane. Flight attendants passed close by on the L of my aisle seat (back to front) several times.
10. I flip a volleyball onto my R finger and spin it clockwise for a bit. It flattens, bulges at the center, then deviates forward, then downward. I progressively lose control of it. It is twice as wide now and very flat as I grab for it with both hands. I feel it on my R fingers, which seems incongruous because it cannot be spinning on that part of my hand—as if on the backside (2, 75). Hands holding open a glossy reprint article songbook style on stomach (lodged against R thumb mainly). In waking I felt it slowly slipping forward along the crook of the thumb and coming to rest on the fingers underneath it. Cutaneous Phasic/tonic Self The gradual slipping forward of the reprint coincided with the gradual slipping forward of the spinning ball; the ball and reprint were both felt to slide at the same locations on the hand.
11. I am climbing a stairwell that has freshly fallen snow scattered over the stairs. My L hand is holding a thick metal railing (1, 23). Sitting in office, left hand holding right in lap, window to my L is open and cold air is blowing in. Thermal Tonic Self There were no abrupt movements and nor phasic stimulus.
12. In the same stairwell, about half way up a flight of stairs. I have a cold feeling. I feel snow blowing up and enveloping me. The scene is largely dark (1, 30). Sitting in office, left hand holding right in lap, window to my L is open and cold air is blowing in. Thermal Tonic Self There were no abrupt movements and nor phasic stimulus.
13. A man and boy are riding in a small motorcycle with a sidecar with bright red shiny fenders (1, 18). Bright sunlight is coming in the windows of the office. Visual Tonic Other Sunlight may have shone red through my eyelids.
14. Seated in my chair I bend forward and place a medium-sized book on my desk, pressing against the book’s bottom edge with my fingertips (1, 24). Holding a heavy book open in my lap with R fingers bookmarking several pages; pressure on middle and ring fingertips. Cutaneous Tonic Self Correspondence is in the localized sensations in fingertips.
15. A gray cardboard page resting on my L thumb and index finger suddenly falls forward (1, 15). My right thumb is pressing down on my left thumb and index. Cutaneous Tonic Self Correspondence is in the localized sensations in fingers.
16. I suddenly and vigorously slap a door with my open R palm (1, 12). Seated in chair, my left elbow is pressing on my R palm. Cutaneous Tonic Self Only correspondence is a general increase in sensation in the R palm.
17. Someone is spinning an animal quickly around in circles with his R hand. It just seems stuck to his hand and turning around it. I feel as though I were making the movements myself (1, 34). Sitting upright with both hands between my thighs palms facing out. A bit of paresthesia in both, more in R. Cutaneous Tonic Other Only correspondence is a general increase in sensation in the R hand.
18. An obese person or creature on my L suddenly flails his R arm forward toward me and growls (1, 18). Sitting with book in lap, arms on armrests. R arm is pained and slightly paralyzed. Pain/cutaneous Tonic Other Only correspondence is between the flailing arm and the arm in pain and paralyzed.