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  4. Retinotopic information is rendered invisible by non-retinotopic processing
 
conference paper

Retinotopic information is rendered invisible by non-retinotopic processing

Lauffs, Marc Michael  
•
Öğmen, Haluk
•
Herzog, Michael H.  
2016
Perception
39th European Conference on Visual Perception (ECVP)

Classically, stimuli are rendered unconscious by backward masking or binocular rivalry, where it is usually assumed that the mask or the stimulus in the contralateral eye suppress the target. Based, on the Ternus-Pikler display (http://lpsy.epfl.ch/research/retino/), we present a new method to render stimuli invisible. We presented a black disk with a white dot on it. From frame to frame, the dot changed its position on a circular orbit creating an apparent motion percept of an either clockwise or counterclockwise rotation. Observers discriminated the rotation direction well with about 93% correct responses. The rotation is perceived in retinotopic coordinates. Next, we added a disk, also with a white dot, alternating to the left and right from frame to frame. The disks themselves, now, appear to jump back and forth in tandem. This ‘‘group motion’’ percept of the Ternus-Pikler disks, in turn leads to a non-retinotopic motion percept for the white dot, which renders the retinotopic rotation invisible (54% correct). When the contextual disk was removed, the original retinotopic motion percept for the white dot was immediately perceived. Hence, by adding contextual elements we can switch between different conscious percepts.

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Type
conference paper
Web of Science ID

WOS:000390215900383

Author(s)
Lauffs, Marc Michael  
Öğmen, Haluk
Herzog, Michael H.  
Date Issued

2016

Published in
Perception
Volume

45

Issue

Supplement 2

Start page

186

URL

Conference abstracts

https://dx.doi.org/10.1177/0301006616671273
Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LPSY  
Event nameEvent placeEvent date
39th European Conference on Visual Perception (ECVP)

Barcelona, Spain

Aug 28 - Sep 1, 2016

Available on Infoscience
January 12, 2017
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/132845
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