Coursework.Info - Inspiration in an Instant

On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:

Kamran Khan, 9918104. April 2000 Discuss the role of bottom up and top down processes in visual perception. Theories of perception tend to explain how the visual system operates in terms of two kinds of processes: bottom up, data driven ones, that are pre-attentive, and are a consequence of how the nervous system is structured and top down or concept driven processes which rely on experience, inference and expectations. Apart from the retina, the rest of the visual system has two way connections ( for example the interplay between the lateral geniculate nuclei and the visual cortex), and thus top down processing is an obvious implication of the manner in which the human anatomy is organised. Gestalt psychologists have described how we organise sensation to perceive separate objects: and have developed a number of rules for figure ground organisation. The basic laws of Gestalt are: proximity, similarity, closure, and good continuation. But physiological evidence...

Get instant access

• Instant, unlimited access to our documents in full
• Swap your work for free access, or pay £4.99
• To see the full version of this document and 149,430 others