An advantage for horizontal motion direction discrimination
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| Title: | An advantage for horizontal motion direction discrimination |
|---|---|
| Authors: | Karin S. Pilz, Danai Papadaki |
| Contributors: | University of Aberdeen.Psychology |
| Source: | Vision Research. 158:164-172 |
| Publisher Information: | Elsevier BV, 2019. |
| Publication Year: | 2019 |
| Subject Terms: | Adult, Male, CORTEX, BF Psychology, Adolescent, Horizontal motion, ORIENTATION ANISOTROPIES, Motion Perception, BF, Motion perception, Young Adult, 03 medical and health sciences, ASYMMETRIES, Discrimination, Psychological, 0302 clinical medicine, Orientation, Motion direction discrimination, Psychophysics, Humans, 0501 psychology and cognitive sciences, RECEPTIVE-FIELDS, PERCEPTION, VISUAL EXPERIENCE, 05 social sciences, ATTENTION, Oblique effect, STIMULI, Sensory Thresholds, PSYCHOPHYSICS, Female |
| Description: | Discrimination performance is better for cardinal motion directions than for oblique ones, a phenomenon known as the oblique effect. In a first experiment of this paper, we tested the oblique effect for coarse motion direction discrimination and compared performance for the two cardinal and two diagonal motion directions. Our results provide evidence for the oblique effect for coarse motion direction discrimination. Interestingly, the oblique effect was larger between horizontal and diagonal than between vertical and diagonal motion directions. In a second experiment, we assessed fine motion direction discrimination for horizontal and vertical motion. It has been suggested that differences in performance strongly depend on motion coherence. Therefore, we tested performance at predetermined motion coherences of 30%, 40%, 50%, 60% and 70%. Unsurprisingly, performance overall increased with increasing motion coherence and angular deviations between control and test stimulus. More importantly, however, we found an advantage for horizontal over vertical fine motion direction discrimination. Noteworthy is the large variability in performance across experimental conditions in both experiments, which highlights the importance of considering individual difference when assessing perceptual phenomena within large groups of naïve participants. |
| Document Type: | Article |
| File Description: | application/pdf |
| Language: | English |
| ISSN: | 0042-6989 |
| DOI: | 10.1016/j.visres.2019.03.005 |
| Access URL: | https://pubmed.ncbi.nlm.nih.gov/30878277 https://research.rug.nl/en/publications/215cfcd6-3e8e-4e52-8ac2-393c5a48a400 https://hdl.handle.net/11370/215cfcd6-3e8e-4e52-8ac2-393c5a48a400 https://doi.org/10.1016/j.visres.2019.03.005 https://www.ncbi.nlm.nih.gov/pubmed/30878277 https://aura-test.abdn.ac.uk/handle/2164/12675?show=full https://www.rug.nl/research/portal/files/78206791/Pilz_Papadaki_VR_2019.pdf https://europepmc.org/abstract/MED/30878277 https://pubmed.ncbi.nlm.nih.gov/30878277/ https://aura.abdn.ac.uk/handle/2164/13889 |
| Rights: | Elsevier Non-Commercial taverne |
| Accession Number: | edsair.doi.dedup.....bd8a367955d6e3ec01b562892d98b78c |
| Database: | OpenAIRE |
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Nájsť tento článok vo Web of Science | Abstract: | Discrimination performance is better for cardinal motion directions than for oblique ones, a phenomenon known as the oblique effect. In a first experiment of this paper, we tested the oblique effect for coarse motion direction discrimination and compared performance for the two cardinal and two diagonal motion directions. Our results provide evidence for the oblique effect for coarse motion direction discrimination. Interestingly, the oblique effect was larger between horizontal and diagonal than between vertical and diagonal motion directions. In a second experiment, we assessed fine motion direction discrimination for horizontal and vertical motion. It has been suggested that differences in performance strongly depend on motion coherence. Therefore, we tested performance at predetermined motion coherences of 30%, 40%, 50%, 60% and 70%. Unsurprisingly, performance overall increased with increasing motion coherence and angular deviations between control and test stimulus. More importantly, however, we found an advantage for horizontal over vertical fine motion direction discrimination. Noteworthy is the large variability in performance across experimental conditions in both experiments, which highlights the importance of considering individual difference when assessing perceptual phenomena within large groups of naïve participants. |
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| ISSN: | 00426989 |
| DOI: | 10.1016/j.visres.2019.03.005 |