visual perception
Visual perception and visual sensation are both interactive processes, although there is a significant difference between the two processes. Sensation is defined as the stimulation of sense organs Visual sensation is a physiological process which means that it is the same for everyone. We absorb energy such as electro magnetic energy (light) or sound waves by sensory organs such as eyes. This energy is then transduced into electro chemical energy by the cones and rods (receptor cells) in the retina. There are four main stages of sensation. Sensation involves detection of stimuli incoming from the surrounding world, registering of the stimulus by the receptor cells, transduction or changing of the stimulus energy to an electric nerve impulse, and then finally the transmission of that electrical impulse into the brain. Our brain then perceives what the information is. Hence perception is defined as the selection, organisation and interpretation of that sensory input. Perception is defined as the process of organizing, interpreting, and selectively extracting sensory information . Visual perception is left to the individual person to make up their own mind. Perceptual organisation occurs when one groups the basic elements o
Perceptual set is another factor that can effect visual perception. Perceptual set is a predisposition to perceive stimuli in a specific way; that is ignoring some stimuli and attending closely to others. Visual perception uses perceptual set to its advantage. We usually tend to see what we want to see. An example of perceptual set was a television advertisement that I saw while overseas. It was an advertisement showing men hardworking while explaining the nice cold refreshing taste of a drink. Of course after seeing this and hearing this the immediate thing that came to my head was an ice cold beer but the advertisement was selling bottled water. By using perceptual set they were actually selling off their product. Very deceiving. The third visual perception tendency in perception is similarity. In similarity size, shape, color, or form tend to be grouped together. For example if two bands are walking down the street side by side and their uniforms are different colours, the bands will be seen as two separate groups, and not as one large group. The process of perception is an interactive yet separate process from sensation, however, it is sometimes difficult to separate the two processes. The main difference is that sensation is where our sense organs first encounter raw stimuli. Perception is the process by which the stimuli are interpreted, analysed, and integrated with other sensory information. There are six diagonal lines. At one end there are circles on them giving the impression of three circular prongs. At the other end the same size lines have cross connecting lines consistent with two square prongs. These perceptions can violate our expectations for what is possible often to a delightful effect. Our psychology class did an Empirical Research Assessment on perceptual set. The ERA consisted of showing people pictures of faces and then showing a picture of a face/rat. T
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Approximate Word count = 1291
Approximate Pages = 5 (250 words per page double spaced)
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