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Table of contents
Visual Illusion to Induce Vertigo in Virtual Ecologies
Flying
Head Mount Display
Framed Space
Breaking the Frame
Ecological movement: as referred to by the percepts of: ‘undulating’ ‘rhythmical’ ‘mobile synthesis’ ‘shifting view points’
Discontinuity of vision
Refusal to respect the limits of the framed authorial view Admittance of the frame as a technological device to be undermined
A system of a labyrinth
Visual/Optic flow
The body (mind) interprets motion by way of three separate channels of input; the eyes, ears, and kinesthetic or tactile stimulation
Vertigo - Perception of movement (especially rotational), either of yourself or of objects around you
Disequilibrium - Refers to unsteadiness, imbalance or loss of equilibrium
Disorientation - Loss of proper bearings, state of mental confusion as to position, location or movement.
Sensory Illusion - A false or misinterpreted sensory impression
Cognitive illusions Stereograms are based on a cognitive visual illusion
Impossible Objects - Cognitive misinterpretations of structure.
For humans, the sensory perspective remains that of a creature walking on the ground
The Coriolis Illusion - Brought about by the combination of ear, eye, and proprioceptive disturbances.
Motion sickness tends to be caused by the mismatch of signals to the brain. Basically, two systems are involved; (1) the visual system and (2) the vestibular system.
psychologists speak of induced motion, a phenomenon noticeable when we see clouds drifting across the face of the moon
Cinematic viewing positions the gaze as a hostage to the author’s temporal perspective.
Proprioceptive orientation, because it relies primarily on movement, cannot be measured or mapped in a static geometry or a (Cartesian) coordinate-based grid.
"outward from the middle of [a reader's] own movement"
Optic Flow As a person moves about in the visual world, images move about and change their shapes and relationships
These first-order flow patterns can be described in terms of dilation, rotation and two components of shear
If these quantities can be measured, then useful information for the control of action becomes available.
like the log-polar pattern, the human retina is foveated: it has a high-acuity central area.
cone cell density the density of the ganglion cells which transmit information out of the retina is very close to log-polar
In the simplest terms optical flow tracks every pixel in one frame to the next frame. The output is a series of vectors for every pixel in the shot. From these vectors and some analysis one can do an advanced image processing to find shapes and objects in the scene.
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Psychophysical studies have revealed that the retinal periphery plays a dominant role in inducing vection, ie the visually induced sensation of self-motion.
Psychosis Mental disorder in which a person's thoughts, affective response, ability to recognize reality, and ability to communicate and relate to others are sufficiently impaired to grossly interfere with his or her capacity to deal with reality.
Classical characteristics of psychosis include hallucinations (alterations in sensory perception, usually involving hearing voices or seeing images that do not exist) and delusions (beliefs about events or circumstances that have no basis in reality) Cinema – induced psychosis
Alfons Schilling «Dunkelkammerhut» The «Dunkelkammerhut» (Darkroom Hat) is a mobile camera obscura worn on the head. It encloses the viewer in a picture-production-instrument—a machine for the experimental investigation of perception.
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