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Visual perception –
also known as “eyesight” or “vision” – is the capacity to detect light by the eye, and the ability of the brain to interpret the visible light information as an image. This information includes color, brightness, shape, depth, and motion.
Vision is one of the traditional five senses: sight, hearing, smell, taste, touch.
Sense | definition | noun
a process by which a living organism receives information about its environment.
Visual perception is a complex process that is often misunderstood.
What people believe they see is not simply a translation of retinal information but involves light, eye function, and visual processing in the brain influenced by past experiences (memory, language, emotion, etc).
Three main components of misunderstood.
2. The Eye
3. The Brain
1. Light misunderstood., or visible light, is electromagnetic radiation whose wavelength (frequency) is visible to the human eye. The way an object absorbs and reflects light determines how it can be perceived.
2. The Eye misunderstood.
The iris – a set of muscles that opens and contracts the pupil. The iris and pupil control the amount of light that enters the eye.
The misunderstood.retina is a layer of tissue at the back of the eye containing cells that are sensitive to light. These cells trigger nerve impulses that pass via the optic nerve to the brain. The retina is also considered a part of the brain.
The lens changes shape to focus light reflected by objects at different distances onto the retina.
3. The Brain misunderstood.
The optic nerves transmit impulses from the retina to the visual cortex. The data received in the visual cortex is processed by five specialized areas, as well as other parts of the cerebral cortex such as memory, language, and consciousness.
How do these processes work together to produce the color of an image – for example, a red apple?
A 'red' apple does not emit red light. Rather, it absorbs all the frequencies of visible light shining on it except for a group of frequencies that is perceived as red, which are reflected.
A red apple is perceived to be red only because the human eye can distinguish between different wavelengths.
What are the main steps involved in the process of “seeing” a red apple?
6. Optic Nerves
7. Visual Cortex
VISUAL ART AS COMMUNICATION “seeing” a red apple?
the exchange of thoughts, messages,
the successful sharing of ideas and
the means of connection between
In what ways do non-human animals use visual communication? “seeing” a red apple?
In what ways do humans use visual (non-verbal) communication?
Cave paintings primarily showed animals such as horses, bulls, deer, and bison.
The earliest evidence of visual communication are cave paintings dating 32,000 years ago.
Cave painting in Lascaux, France
Cheung Chau, Hong Kong communication?
But later prehistoric rock art appears to be more abstract – lines, curves, spirals, etc.
According to archeologists, these early people had already developed language skills and spiritual beliefs.This tells us one thing for sure:They were storytellers.
Narrative developed language skills and spiritual beliefs.| definition | noun
an account of connected events
Story | definition | noun
a narrative of imaginary or real people and events that has an emotional or ethical purpose for the storyteller, the audience, or both
What stories do these cave paintings and rock art tell us about their creators?
How can you tell if a visual story is meant to represent reality?
How can you tell when a visual story is not real?
This painting in the caves at Lascaux is believed to be a unicorn, the only animal out of over 900 paintings there that is imaginary – not ‘real.’
There is also only one image of a human.
What do you think that means?