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Text File  |  1996-12-31  |  913b  |  32 lines
  1.  
  2.     Clearly, the stimuli we receive
  3. are integral to the mental
  4. pictures of the world our brains
  5. create. Our perception of color is
  6. based on different wavelengths
  7. of light, our perception of tonal
  8. pitch on frequency of sound
  9. vibration, our perception of
  10. brightness on amplitude of light
  11. waves, and so on. The program of
  12. psychophysical investigators of
  13. the late nineteenth century,
  14. who are often credited with
  15. founding scientific psychology,
  16. was precisely one of correlating
  17. subjective sensations with
  18. physical stimuli.
  19.  
  20.     In visual perception, the
  21. psychophysical approach lost 
  22. its appeal when stimulus
  23. correlates could not be found 
  24. for many perceptual
  25. phenomena. However,
  26. beginning in the 1940s, James J.
  27. Gibson of Cornell and his
  28. associates began to suggest
  29. stimulus correlates for many of
  30. those properties and events that
  31. previously had resisted
  32. psychophysical investigation.