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Front. Psychol. | doi: 10.3389/fpsyg.2018.00147

Does Allocation of Attention Influence Relative Velocity and Strength of Illusory Line Motion?

 Timothy L. Hubbard1* and Susan E. Ruppel2
  • 1Arizona State University, United States
  • 2University of South Carolina Upstate, United States

In illusory line motion, presentation of a cue is followed by presentation of a nearby stationary line, and the line is perceived to “unfold,” “expand,” or “extend” away from the cue. Effects of the allocation of attention regarding where the cue or the line would be presented were measured in three experiments, and ratings of relative velocity and relative strength of illusory motion were collected. Findings included (a) relative velocity and relative strength decreased with increases in SOA from 50 to 450 milliseconds, (b) relative velocity and relative strength were not influenced by whether illusory motion moved from one end of the line to the other or from both ends toward the middle of the line, (c) increased uncertainty regarding where the line would appear did not influence relative velocity or relative strength, and (d) valid pre-cues regarding the location of a cue resulted in faster relative velocity than did invalid pre-cues, but pre-cue validity did not influence relative strength. Implications of these findings for the relationship of such illusory motion and attention (e.g., divided attention, shifts in attended location) are considered.

Keywords: illusory line motion, Attention, perception of velocity, perception of motion, Cueing

Received: 12 Aug 2017; Accepted: 29 Jan 2018.

Edited by:

Davood Gozli, University of Macau, China

Reviewed by:

Juan Lupiáñez, University of Granada, Spain
Jeff P. Hamm, University of Auckland, New Zealand  

Copyright: © 2018 Hubbard and Ruppel. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Dr. Timothy L. Hubbard, Arizona State University, Tempe, United States,