Comparison of the haptic and visual deviations in a parallelity task

A. M L Kappers, Wouter B. Schakel

Research output: Contribution to JournalArticleAcademicpeer-review


Deviations in both haptic and visual spatial experiments are thought to be caused by a biasing influence of an egocentric reference frame. The strength of this influence is strongly participant-dependent. By using a parallelity test, it is studied whether this strength is modality-independent. In both haptic and visual conditions, large, systematic and participant-dependent deviations were found. However, although the correlation between the haptic and visual deviations was significant, the explained variance due to a common factor was only 20%. Therefore, the degree to which a participant is "egocentric" depends on modality and possibly even more generally, on experimental condition.

Original languageEnglish
Pages (from-to)467-473
Number of pages7
JournalExperimental Brain Research
Issue number3
Publication statusPublished - Feb 2011


  • Haptic perception
  • Parallel
  • Reference frames
  • Spatial perception
  • Visual perception


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