Please use this identifier to cite or link to this item:
|Title:||Distortion in perceived image size accompanies flash lag in depth|
|Authors:||Lee, Terence C. P. |
Khuu, Sieu K.
Dr. LI Wang On, Alex
|Source:||Journal of Vision, Aug. 2008, vol. 8(11), Article no. 20.|
|Journal:||Journal of Vision|
|Abstract:||The flash-lag effect—a misperception that a flashed object appears to lag behind a moving object despite their physical alignment—has mainly been investigated as a spatiotemporal offset. Here, we report that the flash-lag-in-depth effect is accompanied by an illusory change in the apparent size of the flashed object. We found a strong flash-lag-in-depth effect with a dot-defined square, whose motion in depth was signaled by changing retinal disparity (stereomotion), and a Gaussian blob that was flashed in the center of the square. Using the same stimulus, observers matched the apparent size of the flashed blob with a reference blob when the square moved with approaching or receding motion. Approaching motion of the square resulted in a reduction in the apparent size of the flashed blob, and an apparent enlargement of the flashed blob was induced by receding motion of the square. Additionally, this size effect substantially diminished, or was eliminated, when looming (change of size) instead of stereomotion was used to cue motion in depth of the square. The flashed-object size change that is induced by the moving square is not explained by simple predictions from projective geometry.|
|Type:||Peer Reviewed Journal Article|
|Appears in Collections:||Counselling and Psychology - Publication|
Find@HKSYU Show full item record
checked on Sep 2, 2020
checked on Sep 14, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.