Abstract
When observers are presented directionally ambiguous motion, they exhibit a bias for experiencing movement in the direction in which shapes appear to face. We examined the influence of rigidity of a shape on the forward-facing bias with stimuli whose directionality is biologically specified. In general, the lack of shape correspondence during a nonrigid transformation should weaken the motion percept and decrease forward-facing bias. In contrast, representational momentum cues associated with a biologically likely nonrigid transformation should enhance the motion percept and increase forward-facing bias. Analysis for both rigid and nonrigid conditions indicated statistically significant forward-facing biases, but strength of bias did not differ significantly. The lack of difference between the two conditions suggests that the transformation was not one which allowed the influence of either consistency of correspondence or representational momentum to dominate and confirms that a comparably sized forward-facing bias can occur with both rigidly and nonrigidly transformed shapes.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1187-1193 |
| Number of pages | 7 |
| Journal | Perceptual and Motor Skills |
| Volume | 85 |
| Issue number | 3 PART II |
| State | Published - Dec 1997 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Psychology(all)
- Experimental and Cognitive Psychology
Cite this
Forward-facing motion biases for rigid and nonrigid biologically likely transformations. / McBeath, Michael; Morikawa, Kazunori.
In: Perceptual and Motor Skills, Vol. 85, No. 3 PART II, 12.1997, p. 1187-1193.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Forward-facing motion biases for rigid and nonrigid biologically likely transformations
AU - McBeath, Michael
AU - Morikawa, Kazunori
PY - 1997/12
Y1 - 1997/12
N2 - When observers are presented directionally ambiguous motion, they exhibit a bias for experiencing movement in the direction in which shapes appear to face. We examined the influence of rigidity of a shape on the forward-facing bias with stimuli whose directionality is biologically specified. In general, the lack of shape correspondence during a nonrigid transformation should weaken the motion percept and decrease forward-facing bias. In contrast, representational momentum cues associated with a biologically likely nonrigid transformation should enhance the motion percept and increase forward-facing bias. Analysis for both rigid and nonrigid conditions indicated statistically significant forward-facing biases, but strength of bias did not differ significantly. The lack of difference between the two conditions suggests that the transformation was not one which allowed the influence of either consistency of correspondence or representational momentum to dominate and confirms that a comparably sized forward-facing bias can occur with both rigidly and nonrigidly transformed shapes.
AB - When observers are presented directionally ambiguous motion, they exhibit a bias for experiencing movement in the direction in which shapes appear to face. We examined the influence of rigidity of a shape on the forward-facing bias with stimuli whose directionality is biologically specified. In general, the lack of shape correspondence during a nonrigid transformation should weaken the motion percept and decrease forward-facing bias. In contrast, representational momentum cues associated with a biologically likely nonrigid transformation should enhance the motion percept and increase forward-facing bias. Analysis for both rigid and nonrigid conditions indicated statistically significant forward-facing biases, but strength of bias did not differ significantly. The lack of difference between the two conditions suggests that the transformation was not one which allowed the influence of either consistency of correspondence or representational momentum to dominate and confirms that a comparably sized forward-facing bias can occur with both rigidly and nonrigidly transformed shapes.
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UR - http://www.scopus.com/inward/citedby.url?scp=0031296924&partnerID=8YFLogxK
M3 - Article
C2 - 9450269
AN - SCOPUS:0031296924
VL - 85
SP - 1187
EP - 1193
JO - Perceptual and Motor Skills
JF - Perceptual and Motor Skills
SN - 0031-5125
IS - 3 PART II
ER -