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Related Experiment Videos

Cats exhibit the Franssen Effect illusion.

Micheal L Dent1, Daniel J Tollin, Tom C T Yin

  • 1Department of Physiology, University of Wisconsin, Madison, Wisconsin 53706, USA. mdent@buffalo.edu

The Journal of the Acoustical Society of America
|December 18, 2004
PubMed
Summary
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The Franssen Effect (FE), an auditory illusion, is now demonstrated in cats. This finding supports the theory that sound localization difficulties are key to experiencing this spatial audio illusion.

Area of Science:

  • Auditory perception
  • Neuroscience
  • Animal behavior

Background:

  • The Franssen Effect (FE) is an auditory illusion where listeners mislocalize sounds.
  • Previously, the FE was only demonstrated in humans using discrimination tasks.
  • The FE occurs in reverberant conditions and at frequencies challenging for sound localization.

Purpose of the Study:

  • To investigate the Franssen Effect (FE) in domestic cats.
  • To determine if the FE is linked to sound localization mechanisms.
  • To compare FE elicitation in cats with human studies.

Main Methods:

  • The FE was elicited in cats using novel localization procedures.
  • Cats were presented with spatially separated transient and sustained tones.

Related Experiment Videos

  • Localization accuracy was assessed to identify the FE.

    • Main Results:

    • The Franssen Effect was successfully demonstrated in domestic cats.
    • Higher frequencies, where cats struggle with localization, elicited the FE.
    • This study utilized localization procedures, unlike prior human discrimination tasks.

    Conclusions:

    • The Franssen Effect can be elicited in cats.
    • Findings support the hypothesis that impaired sound localization underlies the FE.
    • This research provides a new model for studying auditory illusions and localization mechanisms.