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Updated: Aug 16, 2025

Measuring Sensitivity to Viewpoint Change with and without Stereoscopic Cues
Published on: December 4, 2013
Stereopsis provides a constant feed to visual shape representation
Martin Arguin1, Mercédès Aubin2
1Centre interdisciplinaire de recherche sur le cerveau et l'apprentissage (CIRCA), Département de psychologie, Université de Montréal and Centre de recherche, Institut Universitaire de Gériatrie de Montréal, Canada.
Abstract:
The contribution of stereopsis in human visual shape perception was examined using stimuli with either null, normal, or reversed binocular disparity in an old/new object recognition task. The highest levels of recognition performance were observed with null and normal binocular disparity displays, which did not differ. However, reversed disparity led to significantly worse performance than either of the other display conditions. This indicates that stereopsis provides a continuous input to the mechanisms involved in shape perception.
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Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...

