Visual and haptic matching of perceived orientations of lines

Frouke Hermens, Stan C A M Gielen

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


In this study we investigated the perception and production of line orientations in a
vertical plane. Previous studies have shown that systematic errors are made when participants
have to match oblique orientations visually and haptically. Differences in the setup for visual and
haptic matching did not allow for a quantitative comparison of the errors. To investigate whether
matching errors are the same for different modalities, we asked participants to match a visually
presented orientation visually, haptically with visual feedback, and haptically without visual feed-
back. The matching errors were the same in all three matching conditions. Horizontal and verti-
cal orientations were matched correctly, but systematic errors were made for the oblique
orientations. The errors depended on the viewing position from which the stimuli were seen, and
on the distance of the stimulus from the observer.
Original languageEnglish
Pages (from-to)235-248
Number of pages14
Issue number2
Early online date5 Dec 2002
Publication statusPublished - 2003


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