Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Klaus Landwehr"'
Publikováno v:
Frontiers in Psychology, Vol 15 (2024)
Externí odkaz:
https://doaj.org/article/4c9fbf55774f4f168892e826a7577f4b
Autor:
Klaus Landwehr
Publikováno v:
Symmetry, Vol 14, Iss 12, p 2550 (2022)
For nine popular geometrical visual-illusion figures, a mathematical analysis is provided along with a characterization of the figures’ psychological effectiveness. Supported by graphical illustrations, for the L and the T, it is shown how mathemat
Externí odkaz:
https://doaj.org/article/19d91bba7b6141c984eec486fdf9690c
Autor:
Klaus Landwehr
Publikováno v:
Symmetry, Vol 14, Iss 8, p 1687 (2022)
Geometrical visual illusions have long been used as tools in neuroscience. Most commonly, researchers have taken illusions as a given and attempted to explain phenomenal impressions in terms of known neural mechanisms. In a psychophysical approach to
Externí odkaz:
https://doaj.org/article/bbceffcbf137427a802669299995fb4d
Autor:
Klaus Landwehr
Publikováno v:
Symmetry, Vol 12, Iss 8, p 1330 (2020)
Variants of the capital Latin letter T were prepared with the straight strokes replaced by J-, C-, or S-curves, mimicking handwritten Ts. These were used to test the hypothesis that the overestimation of the length of the T’s undivided line, relati
Externí odkaz:
https://doaj.org/article/4eaf4b86dab240929351bcf6ba5a591f
Autor:
Klaus Landwehr
Publikováno v:
Symmetry, Vol 3, Iss 2, Pp 207-219 (2011)
Within most of the 17 plane symmetry groups, individual symmetry operations act in multiple, nonequivalent ways. This, and the fact that many groups can be realized on the basis of different unit cells and generating regions, poses difficulties for v
Externí odkaz:
https://doaj.org/article/c8d8f4ca6d8b4067a6767c7bc60f6397
Autor:
Klaus Landwehr
Publikováno v:
Attention, Perception, & Psychophysics. 85:1304-1316
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2591955b373d40e72042840dede36e77
https://doi.org/10.3758/s13414-023-02696-3
https://doi.org/10.3758/s13414-023-02696-3
Autor:
Klaus Landwehr
Publikováno v:
Perception. 51:496-504
In order to investigate interrelations between the Oppel-Kundt- and the T-illusion, T-type figures, comprised of one dotted and one empty line (demarcated by its endpoints), separated by a gap of variable size, and rotated to oblique orientations, we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3688dfff4c8e59eb71d019d4747aef9d
https://doi.org/10.1177/03010066221096998
https://doi.org/10.1177/03010066221096998
Autor:
Klaus Landwehr
Publikováno v:
Attention, Perception & Psychophysics
Two experiments tested a prediction derived from the recent finding that the Oppel-Kundt illusion – the overestimation of a filled extent relative to an empty one – was much attenuated when the empty part of a bipartite row of dots was vertical a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0eed2cc95ccd227a0d88d2c22bbf2648
https://doi.org/10.3758/s13414-021-02360-8
https://doi.org/10.3758/s13414-021-02360-8
Autor:
Klaus, Landwehr
Publikováno v:
Vision Research. 202:108143
One of the original Ponzo illusion figures, which consists of two converging lines between which two parallel lines of similar length have been inserted orthogonal to the figure's axis of mirror symmetry, was itself mirror-reflected so that the overa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e75fb982d67683d9e6cda560731aff2d
https://doi.org/10.1016/j.visres.2022.108143
https://doi.org/10.1016/j.visres.2022.108143
Autor:
Klaus Landwehr
Publikováno v:
Perception. 50(5)
The Oppel–Kundt illusion consists in the overestimation of the length of filled versus empty extents. Two experiments explored its relation to the horizontal-vertical illusion, which consists in the overestimation of the length of vertical versus h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f7b18eeb6f487ed4dfa1a719484fd24
https://pubmed.ncbi.nlm.nih.gov/33870769
https://pubmed.ncbi.nlm.nih.gov/33870769