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Serious Games - 9. Virtual Reality (Terminology (Presence (The sense of…
Serious Games - 9. Virtual Reality
Intorduction
What is virtual Reality?
Virtual Reality is the electronic simulation of interavtive three-dimensional environments experienced via head-mounted eye goggles
VR vs. Augmented Reality
Similarities
goals: Immersing the user
both caim to create realistic environments
Differences
Isolation: AR does not isolate the user from the real environment
Terminology
Presence
The sense of being in an environment
Telepresense
presence in an environment by means of a communication medium
Virtual Reality
a real or simulated environment in which a perceiver experiences telepresence
Vividness
the representational richness of a mediated environment as defined by its formal features, that is, the way in which an environment presents information to the senses
Sensory breadth
the number of sensory dimensions simultanously presented
sensory depth
the resolution wihtin each of these perceptual channels
interactivity
the extend to which users can participate in modifying the form and content of a mediated environment in real time
speed
the rate at which input can be assimilated into the mediated environment
range
the number of possibilities for action at any given time
mapping
the abilty of a system to map its controls to changes in the mediated environment in a natural and predictable manner
Devices
Oculus Rift
HTC Vive (Steam VR)
Input
Datagloves
Virtusphere
Virtuix Omni
Razer Hydra
Leap Motion
Applications
Engineering and Construction
Clinical applications
Psychological therapy
trainign
games
Cybersickness
Definition
motion sickness
can happen from any kind of movement. People tend to get motion sickness on a moving boat, train, airplane, car or amusement park rides
Vection
is the perceived sensation of self motion
cybersickness
is a form of viusally induced motion sickness that occurs in virtual reality environments, an dis caused by vection
Symptoms
Nausea N
Nausea
increased Salvation
Seweating
Stomach Awareness
Burping
Oculomotor O
Fatigue
Headache
Eyestrain
Blurry Vision
Diffulty Focusing
Disorientation D
Head fullness
Dizziness
Vertigo
technical factors
Refreshing rate
resolution
smearing
strobing
judder
Theorien
Sensor conflict theory
discrepancies between bodily sensorial inputs cause a conflict the brain cannot handle
visual system
perceives movement direction, speed and acceleration
vestibular system (inner ear)
perceives movement acceleration
propioceptive system
perceivs acutal posture and muscular effort
poison theroy
motion sickness and cybersickness occurs from an evolutionary standpoint
Postural Instability Theory
one of the primary behavioral goals in human is to maintain postural stability in the environment