... found. Lashley et al (1951; cited in Eysenck, M. 1998) were unable to affect vision by disrupting the electrical fields in the cortex of monkeys. However, the grouping theories that they have described occur in perception even at short durations of less than 100 m/s, this suggests that they must be a bottom up process. Template theories suggest that copies of the objects are stored in the long term memory, which are matched against to produce pattern recognition. This theory is completely concept driven, and thus only those objects stored in memory can be seen and novel objects cannot be perceived at all. Since one object needs various templates to represent all the different shapes and sizes that result from viewing a 3D object, it requires an almost infinite numbers of templates to be stored, and accessed. Feature theorists solve the problem by breaking an image into basic features, which are ...

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