Abstract
Although motion parallax is closely associated with observer head movement, the underlying neural mechanism appears to rely on a pursuit-like eye movement signal to disambiguate perceived depth sign from the ambiguous retinal motion information [Naji, J. J., & Freeman, T. C. A. (2004). Perceiving depth order during pursuit eye movement. Vision Research, 44, 3025-3034; Nawrot, M. (2003). Eye movements provide the extra-retinal signal required for the perception of depth from motion parallax. Vision Research, 43, 1553-1562]. Here, we outline the evidence for a pursuit signal in motion parallax and propose a simple neural network model for how the pursuit theory of motion parallax might function within the visual system. The first experiment demonstrates the crucial role that an extra-retinal pursuit signal plays in the unambiguous perception of depth from motion parallax. The second experiment demonstrates that identical head movements can generate opposite depth percepts, and even ambiguous percepts, when the pursuit signal is altered. The pursuit theory of motion parallax provides a parsimonious explanation for all of these observations.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 4709-4725 |
| Number of pages | 17 |
| Journal | Vision research |
| Volume | 46 |
| Issue number | 28 |
| DOIs | |
| State | Published - Dec 1 2006 |
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Keywords
- Depth
- Eye movement
- Motion parallax
- Pursuit
ASJC Scopus subject areas
- Ophthalmology
- Sensory Systems
Cite this
The pursuit theory of motion parallax. / Nawrot, Mark; Joyce, Lindsey.
In: Vision research, Vol. 46, No. 28, 01.12.2006, p. 4709-4725.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The pursuit theory of motion parallax
AU - Nawrot, Mark
AU - Joyce, Lindsey
PY - 2006/12/1
Y1 - 2006/12/1
N2 - Although motion parallax is closely associated with observer head movement, the underlying neural mechanism appears to rely on a pursuit-like eye movement signal to disambiguate perceived depth sign from the ambiguous retinal motion information [Naji, J. J., & Freeman, T. C. A. (2004). Perceiving depth order during pursuit eye movement. Vision Research, 44, 3025-3034; Nawrot, M. (2003). Eye movements provide the extra-retinal signal required for the perception of depth from motion parallax. Vision Research, 43, 1553-1562]. Here, we outline the evidence for a pursuit signal in motion parallax and propose a simple neural network model for how the pursuit theory of motion parallax might function within the visual system. The first experiment demonstrates the crucial role that an extra-retinal pursuit signal plays in the unambiguous perception of depth from motion parallax. The second experiment demonstrates that identical head movements can generate opposite depth percepts, and even ambiguous percepts, when the pursuit signal is altered. The pursuit theory of motion parallax provides a parsimonious explanation for all of these observations.
AB - Although motion parallax is closely associated with observer head movement, the underlying neural mechanism appears to rely on a pursuit-like eye movement signal to disambiguate perceived depth sign from the ambiguous retinal motion information [Naji, J. J., & Freeman, T. C. A. (2004). Perceiving depth order during pursuit eye movement. Vision Research, 44, 3025-3034; Nawrot, M. (2003). Eye movements provide the extra-retinal signal required for the perception of depth from motion parallax. Vision Research, 43, 1553-1562]. Here, we outline the evidence for a pursuit signal in motion parallax and propose a simple neural network model for how the pursuit theory of motion parallax might function within the visual system. The first experiment demonstrates the crucial role that an extra-retinal pursuit signal plays in the unambiguous perception of depth from motion parallax. The second experiment demonstrates that identical head movements can generate opposite depth percepts, and even ambiguous percepts, when the pursuit signal is altered. The pursuit theory of motion parallax provides a parsimonious explanation for all of these observations.
KW - Depth
KW - Eye movement
KW - Motion parallax
KW - Pursuit
UR - http://www.scopus.com/inward/record.url?scp=33750990765&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33750990765&partnerID=8YFLogxK
U2 - 10.1016/j.visres.2006.07.006
DO - 10.1016/j.visres.2006.07.006
M3 - Article
C2 - 17083957
AN - SCOPUS:33750990765
VL - 46
SP - 4709
EP - 4725
JO - Vision Research
JF - Vision Research
SN - 0042-6989
IS - 28
ER -