The memory template in Drosophila pattern vision at the flight simulator

Vision Res. 1999 Nov;39(23):3920-33. doi: 10.1016/s0042-6989(99)00114-5.


Pattern recognition is studied in flight orientation of fixed flying Drosophila melanogaster controlling the horizontal rotations of an arena. Earlier experiments had suggested a simple mechanism of pattern recognition in which a memory template and the actual image are retinotopically matched. In contrast, we now show that Drosophila extracts at least two and probably four pattern parameters: size, vertical position of the center of gravity and, presumably horizontal/vertical extent as well as vertical separatedness of pattern elements. Moreover, the fly treats isolated pattern elements as a compound figure. Retinal transfer is possible between training and test if the centers of gravity of the compound figures are retained.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cues
  • Drosophila / physiology*
  • Gravitation
  • Memory / physiology*
  • Pattern Recognition, Visual / physiology*
  • Vision, Ocular / physiology*