Perception and virtual reality

eye illusion video
We don’t live in a world of reality but in a world of perceptions….
Sometimes clever use of fixation, Motion After Effect and comtext can creat ethem.
Colour that people perceive  is an integrated visual perception of red, green and blue colour receptors in their eyes.
Staring at a particular colour for a long time can also cause chromatic adaptation, which causes our brain to change its colour perception of that object and other objects that we look at immediately after looking at the coloured object. We can create our own reality.

Virtual reality

The ability of speech and sensory perception to see, hear, or become aware of something through the senses can vary within the normal limits to human perception.
The way in which something is regarded, understood, or interpreted can be influenced by other factors.Popular perceptions can be undone even of simple depth perception. 
Augmented and virtual reality can activate all  the senses for immersion and experience.
​The HTC Vive is a virtual reality headset that employs “room scale” tracking technology, allowing the user to move in 3D space.Such virtual reality headsets
and virtual reality simulation allows for an augmented reality from the virtual reality technology.Virtual reality games,commercial appplications and social vr means many eyes are in a mixed reality.

Visual Perception and visual perspective

“It’s not what you look at that matters, it’s what you see.”
— Henry David Thoreau

​The spinning dancer was created by Japanese web designer Nobuyuki Kayahara in 2003 
William Hill’s 1915  My Wife and My Mother-in-Law” is a famous ambiguous image either perceived as a young girl or an old woman 
A viewer’s perception can shift or show bias and be a clue to the  underlying neural structure for what is observed.

Contrast Sensitivity
Contrast sensitivity defines the threshold between the visible and invisible.
Computer testing can accurately estimate threshold for a diverse range of stimuli and conditions.

Researchers from the State University of New York’s College of Optometry are shedding new light on what keeps our eyes healthy. Their study finds daylight improves visual brain cells, helping people to distinguish faint details better.
The discovery could lead to improvements in smartphone screens, further protecting humans from poor vision habits. Too much screen time has already been linked to a phenomenon dubbed “computer vision syndrome.”

Experiments on cats and humans showed bright light stimulates neurons in the visual cortex. The amount of reflected light, or luminance, can change by more than 10,000 times throughout the day.

Contrast sensitivity is strongly dependent on the amount of light. Increasing the amount of light shifts the contrast sensitivity.

If cortical neurons signal luminance contrast independently of light intensity a bright sky would look very dark.

Measurements of ON and OFF cortical functions could help to simulate more accurately human luminance vision and prevent bright digital images from appearing too dark the SUNY team writes in the journal Cell Reports.

 

 
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