Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\26528162
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Front+Hum+Neurosci
2015 ; 9
(ä): 531
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Applying Emmert s Law to the Poggendorff illusion
#MMPMID26528162
Talasli U
; Inan AB
Front Hum Neurosci
2015[]; 9
(ä): 531
PMID26528162
show ga
The Poggendorff illusion was approached with a novel perspective, that of
applying Emmert's Law to the situation. The extensities between the verticals and
the transversals happen to be absolutely equal in retinal image size, whereas the
registered distance for the verticals must be smaller than that of the
transversals due to the fact that the former is assumed to occlude the latter.
This combination of facts calls for the operation of Emmert's Law, which results
in the shrinkage of the occluding space between the verticals. Since the retinal
image shows the transversals to be in contact with the verticals, the shrinkage
must drag the transversals inwards in the cortical representation in order to
eliminate the gaps. Such dragging of the transversals produces the illusory
misalignment, which is a dictation of geometry. Some of the consequences of this
new explanation were tested in four different experiments. In Experiment 1, a new
illusion, the tilting of an occluded continuation of an oblique line, was
predicted and achieved. In Experiments 2 and 3, perceived nearness of the
occluding entity was manipulated via texture density variations and the predicted
misalignment variations were confirmed by using a between-subjects and
within-subjects designs, respectively. In Experiment 4, tilting of the occluded
segment of the transversal was found to vary in the predicted direction as a
result of being accompanied by the same texture cues used in Experiments 2 and 3.
free
free
free
