Il Nuovo Cimento D

, Volume 17, Issue 7–8, pp 941–947 | Cite as

Non-linearity of the interactions between bottom-up and top-down signals in multistable visual perception

  • C. Taddei-Ferretti
  • C. Musio
  • S. Santillo


Both bottom-up sensory information and top-down influences contribute to the perception processes. We studied the perceptual alternations of a multistable ambiguous pattern. We observed that it is possible to interfere on the process of the perception alternance by means of subliminal visual stimuli, which either contrast or second the previous perception. We investigated also the effect of the top-down volitional factor on the perceptual alternation. By using a combination of such top-down factor and bottom-up stimulation, we ascertained that a non-linear type of interaction occurs between the two above factors.

PACS 42.66.Lc

Physiological optics: vision 

PACS 87.10

General, theoretical, and mathematical biophysics (including logic of biosystems, quantum biology, and relevant aspects of thermodynamics, information theory, cybernetics, and bionics) 

PACS 01.30.Cc

Conference proceedings 


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Copyright information

© Società Italiana di Fisica 1995

Authors and Affiliations

  • C. Taddei-Ferretti
    • 1
  • C. Musio
    • 1
  • S. Santillo
    • 1
  1. 1.Istituto di CiberneticaCNRArco Felice (NA)Italy

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