| Title |
Field-like interactions between motion-based reference frames
|
|---|---|
| Published in |
Attention, Perception, & Psychophysics, April 2015
|
| DOI | 10.3758/s13414-015-0890-9 |
| Pubmed ID | |
| Authors |
Mehmet N. Agaoglu, Michael H. Herzog, Haluk Öğmen |
| Abstract |
A reference frame is required to specify how motion is perceived. For example, the motion of part of an object is usually perceived relative to the motion of the object itself. Johansson (Psychological Research, 38, 379-393, 1976) proposed that the perceptual system carries out a vector decomposition, which rewsults in common and relative motion percepts. Because vector decomposition is an ill-posed problem, several studies have introduced constraints by means of which the number of solutions can be substantially reduced. Here, we have adopted an alternative approach and studied how, rather than why, a subset of solutions is selected by the visual system. We propose that each retinotopic motion vector creates a reference-frame field in the retinotopic space, and that the fields created by different motion vectors interact in order to determine a motion vector that will serve as the reference frame at a given point and time in space. To test this theory, we performed a set of psychophysical experiments. The field-like influence of motion-based reference frames was manifested by increased nonspatiotopic percepts of the backward motion of a target square with decreasing distance from a drifting grating. We then sought to determine whether these field-like effects of motion-based reference frames can also be extended to stationary landmarks. The results suggest that reference-field interactions occur only between motion-generated fields. Finally, we investigated whether and how different reference fields interact with each other, and found that different reference-field interactions are nonlinear and depend on how the motion vectors are grouped. These findings are discussed from the perspective of the reference-frame metric field (RFMF) theory, according to which perceptual grouping operations play a central and essential role in determining the prevailing reference frames. |
Mendeley readers
The data shown below were compiled from readership statistics for 21 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 1 | 5% |
| Romania | 1 | 5% |
| Switzerland | 1 | 5% |
| Unknown | 18 | 86% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 7 | 33% |
| Researcher | 4 | 19% |
| Other | 2 | 10% |
| Student > Bachelor | 1 | 5% |
| Lecturer > Senior Lecturer | 1 | 5% |
| Other | 2 | 10% |
| Unknown | 4 | 19% |
| Readers by discipline | Count | As % |
|---|---|---|
| Psychology | 7 | 33% |
| Neuroscience | 4 | 19% |
| Social Sciences | 3 | 14% |
| Agricultural and Biological Sciences | 1 | 5% |
| Linguistics | 1 | 5% |
| Other | 1 | 5% |
| Unknown | 4 | 19% |
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 07 September 2016.
All research outputs
#16,287,458
of 24,003,070 outputs
Outputs from Attention, Perception, & Psychophysics
#848
of 1,773 outputs
Outputs of similar age
#161,327
of 268,068 outputs
Outputs of similar age from Attention, Perception, & Psychophysics
#42
of 79 outputs
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