The Oppel-Kundt illusion is used to distort the representation of space in healthy subjects and neglect patients.

Several different tasks are used:
  - Reaction times
  - Abjustment task
  - Landmark task





The distotion of space in neglect patients is also investigated with respect to the third dimension.

To study the effects of perspective, we use another well-known visual illusion, the Ponzo illusion.






People working on these projects
  • Alessia Manfredini (healthy subjects and neglect patients)

Related Publications
  • Manfredini A, Mancini F, Posteraro L, Savazzi S. (2013). The two sides of spatial representation in neglect patients: The same spatial distortion for different patterns of performance. Neuropsychologia. 51(10): 1867-1877.
  • Savazzi S, Emanuele B, Scalf P, Bech D. (2012). Reaction times and perceptual adjustments are sensitive to the illusory distortion of space. Experimental Brain Research, 218(1): 119-128.
  • Savazzi S (2008). Reply: no reversal of the Oppel–Kundt illusion with short stimuli: confutation of the space anisometry interpretation of neglect and ‘crossover’ in line bisection. Brain, 131: e95.
  • Savazzi S, Posteraro L, Veronesi G, Mancini F (2007). Rightward and leftward bisection biases in spatial neglect. Two sides of the same coin? Brain, 130: 2070-84.
  • Savazzi S, Frigo C., Minuto, D. (2004). Anisometry of space representation in neglect dyslexia. Cognitive Brain Research, 19: 209-18.