Tactile Motion Reversals

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Alex Holcombe
Sarah McIntyre
Fahed Jbarah
• Shih-Yu Lo
• Patrick Goodbourn
Lizzy Nguyen


Skills Checklist
Python Programming
Psychopy/VisionEgg Installation Notes
R analysis,plot,stats
Verifying timing
Programming Cheat Sheets

Delta motion named by Korte occurs when second stimulus much more intense than first. Motion perceived in wrong direction! Also occurs in tactile and auditory (Burtt 1917)

Tactile reversals following visuo-tactile motion

Dark after light weird reversals when close eyes

  • look in mirror whole time before close eyes, so opposite motion
  • look at periscope or double mirror whole time so doesn't correspond
  • stimulus transients trigger the reversals? Control: Light on for 1s only
  • can't fool stretch receptors? is reason why motion correct at beginning. Or rather, because wider range of spatiotemporal freqs
These notes refer to results by Tatjana Seizova-Cajic, Sarah McIntyre Alex Holcombe . Contact Sarah for information about citing
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