Chapter

Some General Considerations

Norma van Surdam Graham

in Visual Pattern Analyzers

Published in print December 1989 | ISBN: 9780195051544
Published online January 2008 | e-ISBN: 9780199872183 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780195051544.003.0011

Series: Oxford Psychology Series

 Some General Considerations

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The seventeen dimensions of pattern vision considered in this book are mutually independent in the following sense: specifying the stimulus value on any one dimension does not give the value on any other. They are not, however, mutually independent in another important sense: if two patterns differ only along certain dimensions, the two sub-populations of analyzers they excite differ not only along that dimension but also along others. These dimensional interdependencies dramatically complicate interpretation of experiments designed to reveal multiple visual analyzers or similar entities. This chapter summarizes these interdependencies, as well as other factors complicating the interpretation of analyzer-revealing experiments. Their implications for the results on each pattern vision dimension are discussed. The complications in interpretation apply to many other domains as well as to pattern vision.

Keywords: interaction; analyzers; joint selectivity; spatial frequency; spatial extent; spatial position; temporal frequency; motion

Chapter.  13924 words.  Illustrated.

Subjects: Neuropsychology

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