Catching oriented objects

Frouke Hermens, Stan Gielen

Research output: Contribution to journalArticleScientificpeer-review

Abstract

We have investigated how participants match the orientation of a line, which moves on a vertical screen towards the subject. On its path to the participant, the line could disappear at several positions. Participants were instructed to put a bar on a predefined interception point on the screen, such that the bar touched the screen with the same orientation as the moving line at the very moment when the line passed through the interception point or (in case of line disappearance) when the hidden line would pass through the interception point (like in catching). Participants made significant errors for oblique orientations, but not for vertical and horizontal orientations of the moving line. These errors were small or absent when the moving line was visible all the way along its path on the screen. However, these errors became larger when the line disappeared farther away from the interception point. In the second experiment we tested whether these errors could be related to errors in visual perception of line orientation. The results demonstrate that errors in matching of the bar do not correspond to the last perceived orientation of the line, but rather to the perceived orientation of the moving line near the beginning of the movement path. This corresponds to earlier observations that participants shortly track a moving target and then make a saccadic eye movement to the interception point.

Original languageEnglish
Pages (from-to)17-39
Number of pages23
JournalActa Psychologica
Volume114
Issue number1
Publication statusPublished - Sep 2003
Externally publishedYes

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Visual Perception

Keywords

  • Hand Strength/physiology
  • Humans
  • Motion Perception
  • Psychomotor Performance

Cite this

Hermens, F., & Gielen, S. (2003). Catching oriented objects. Acta Psychologica, 114(1), 17-39.
Hermens, Frouke ; Gielen, Stan. / Catching oriented objects. In: Acta Psychologica. 2003 ; Vol. 114, No. 1. pp. 17-39.
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Hermens, F & Gielen, S 2003, 'Catching oriented objects', Acta Psychologica, vol. 114, no. 1, pp. 17-39.

Catching oriented objects. / Hermens, Frouke; Gielen, Stan.

In: Acta Psychologica, Vol. 114, No. 1, 09.2003, p. 17-39.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Catching oriented objects

AU - Hermens, Frouke

AU - Gielen, Stan

PY - 2003/9

Y1 - 2003/9

N2 - We have investigated how participants match the orientation of a line, which moves on a vertical screen towards the subject. On its path to the participant, the line could disappear at several positions. Participants were instructed to put a bar on a predefined interception point on the screen, such that the bar touched the screen with the same orientation as the moving line at the very moment when the line passed through the interception point or (in case of line disappearance) when the hidden line would pass through the interception point (like in catching). Participants made significant errors for oblique orientations, but not for vertical and horizontal orientations of the moving line. These errors were small or absent when the moving line was visible all the way along its path on the screen. However, these errors became larger when the line disappeared farther away from the interception point. In the second experiment we tested whether these errors could be related to errors in visual perception of line orientation. The results demonstrate that errors in matching of the bar do not correspond to the last perceived orientation of the line, but rather to the perceived orientation of the moving line near the beginning of the movement path. This corresponds to earlier observations that participants shortly track a moving target and then make a saccadic eye movement to the interception point.

AB - We have investigated how participants match the orientation of a line, which moves on a vertical screen towards the subject. On its path to the participant, the line could disappear at several positions. Participants were instructed to put a bar on a predefined interception point on the screen, such that the bar touched the screen with the same orientation as the moving line at the very moment when the line passed through the interception point or (in case of line disappearance) when the hidden line would pass through the interception point (like in catching). Participants made significant errors for oblique orientations, but not for vertical and horizontal orientations of the moving line. These errors were small or absent when the moving line was visible all the way along its path on the screen. However, these errors became larger when the line disappeared farther away from the interception point. In the second experiment we tested whether these errors could be related to errors in visual perception of line orientation. The results demonstrate that errors in matching of the bar do not correspond to the last perceived orientation of the line, but rather to the perceived orientation of the moving line near the beginning of the movement path. This corresponds to earlier observations that participants shortly track a moving target and then make a saccadic eye movement to the interception point.

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KW - Psychomotor Performance

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Hermens F, Gielen S. Catching oriented objects. Acta Psychologica. 2003 Sep;114(1):17-39.