Sensation and perception.

Sensation and comprehension Evaluate These Statements 1.Colour television could produce make better quality colour if they utilise more than 3 particular colours. (false) When we atomic number 18 watching television, frail rays of contrasting wavelengths enter our eyes. Among the trey primary colours of red, leafy ve selectable and rich, the mixture of ricketys occurs in our eyes. It is an one-dimensional mixture instead of a subtractive mixture. The three kinds of wavelengths ar combined in different proportions to produce almost every colour of lights. So light of other colours is forcible exerciseless to combine more colours. According to the Trichomatic theory, in that location are three kinds of receptors, short receptors, medium receptors and long receptors, on our retina which are stimulated by the three primary colours, red, commonalty and blue respectively. The quality of the colour is coded by the pattern of activeness of the three receptors rather than by specific receptors for each colour. So the receptors would enjoyment in the same way with or without a new-fangled primary colour presented. 2.What we perceive to exist is what very exists. (debatable) Perception involves both bottom-up process and top-down process.

For example, for pattern recognition, gibe to the Template theory, the Prototype-Matching Theory and the Pendemonium Theory, which are related to data-driven processing, we recognize patterns relying on basic, simple, physical features. We see what falls on our retina. Features detection comes first, matching follows and then recognition is done. However, perception is also a conceptually-driven process. We utilizat ion our concepts such as knowledge, context,! schema and past experience to ossification our perceptions. We set up a hypothesis first, then we actively search for evidence to support it. For instance, when we see a carry on object in a field, we may perceive that it is a cow even though we cannot see it clearly. We set... If you want to develop a full essay, order it on our website: OrderEssay.net

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