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The Effect of Luminance Condition on Form, Form-from-Motion and Motion Perception

Received: 25 March 2017     Accepted: 8 April 2017     Published: 8 November 2017
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Abstract

This study investigated to what extent rod-dominated vision affects motion and form perception accuracy. Twenty-nine healthy subjects took part in the experiment. Form coherence (FC), form-from-motion (FFM) and motion coherence (MC) tests were assessed in low-light (rod-dominated vision) and high-light (cone-dominated vision) conditions. For each test we determined the accuracy by evaluating the correct detection obtained in five levels of coherence (corresponding to different signal-to-noise ratio). The results evidenced that motion, form and form-from-motion accuracy decreased in low-light condition. Furthermore, light condition effect was differently mediated by noise according to the type of task. The motion perception is affected only at high noise levels, while form discrimination was globally affected at all the levels, also in absence of noise, both for static (FC) and dynamic stimuli (FFM). We conclude that in rod-dominated vision form-from-motion perception is more defected than form and motion perception. We hypothesized that our results are due to the integration between M and P cells in FFM test increases the form perception accuracy in high-light condition but this advantage is completely lost during low-light condition, when the rods need to integrate information both from M and P cells.

Published in American Journal of Applied Psychology (Volume 6, Issue 6)
DOI 10.11648/j.ajap.20170606.14
Page(s) 158-165
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Low-Light Level, Form Perception, Form-from-Motion Perception, Motion Perception, Coherence

References
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Cite This Article
  • APA Style

    Giovagnoli Sara, Pansell Tony, Bolzani Roberto, Hellgren Kerstin, Benassi Mariagrazia. (2017). The Effect of Luminance Condition on Form, Form-from-Motion and Motion Perception. American Journal of Applied Psychology, 6(6), 158-165. https://doi.org/10.11648/j.ajap.20170606.14

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    ACS Style

    Giovagnoli Sara; Pansell Tony; Bolzani Roberto; Hellgren Kerstin; Benassi Mariagrazia. The Effect of Luminance Condition on Form, Form-from-Motion and Motion Perception. Am. J. Appl. Psychol. 2017, 6(6), 158-165. doi: 10.11648/j.ajap.20170606.14

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    AMA Style

    Giovagnoli Sara, Pansell Tony, Bolzani Roberto, Hellgren Kerstin, Benassi Mariagrazia. The Effect of Luminance Condition on Form, Form-from-Motion and Motion Perception. Am J Appl Psychol. 2017;6(6):158-165. doi: 10.11648/j.ajap.20170606.14

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  • @article{10.11648/j.ajap.20170606.14,
      author = {Giovagnoli Sara and Pansell Tony and Bolzani Roberto and Hellgren Kerstin and Benassi Mariagrazia},
      title = {The Effect of Luminance Condition on Form, Form-from-Motion and Motion Perception},
      journal = {American Journal of Applied Psychology},
      volume = {6},
      number = {6},
      pages = {158-165},
      doi = {10.11648/j.ajap.20170606.14},
      url = {https://doi.org/10.11648/j.ajap.20170606.14},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajap.20170606.14},
      abstract = {This study investigated to what extent rod-dominated vision affects motion and form perception accuracy. Twenty-nine healthy subjects took part in the experiment. Form coherence (FC), form-from-motion (FFM) and motion coherence (MC) tests were assessed in low-light (rod-dominated vision) and high-light (cone-dominated vision) conditions. For each test we determined the accuracy by evaluating the correct detection obtained in five levels of coherence (corresponding to different signal-to-noise ratio). The results evidenced that motion, form and form-from-motion accuracy decreased in low-light condition. Furthermore, light condition effect was differently mediated by noise according to the type of task. The motion perception is affected only at high noise levels, while form discrimination was globally affected at all the levels, also in absence of noise, both for static (FC) and dynamic stimuli (FFM). We conclude that in rod-dominated vision form-from-motion perception is more defected than form and motion perception. We hypothesized that our results are due to the integration between M and P cells in FFM test increases the form perception accuracy in high-light condition but this advantage is completely lost during low-light condition, when the rods need to integrate information both from M and P cells.},
     year = {2017}
    }
    

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  • TY  - JOUR
    T1  - The Effect of Luminance Condition on Form, Form-from-Motion and Motion Perception
    AU  - Giovagnoli Sara
    AU  - Pansell Tony
    AU  - Bolzani Roberto
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    AU  - Benassi Mariagrazia
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    N1  - https://doi.org/10.11648/j.ajap.20170606.14
    DO  - 10.11648/j.ajap.20170606.14
    T2  - American Journal of Applied Psychology
    JF  - American Journal of Applied Psychology
    JO  - American Journal of Applied Psychology
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    PB  - Science Publishing Group
    SN  - 2328-5672
    UR  - https://doi.org/10.11648/j.ajap.20170606.14
    AB  - This study investigated to what extent rod-dominated vision affects motion and form perception accuracy. Twenty-nine healthy subjects took part in the experiment. Form coherence (FC), form-from-motion (FFM) and motion coherence (MC) tests were assessed in low-light (rod-dominated vision) and high-light (cone-dominated vision) conditions. For each test we determined the accuracy by evaluating the correct detection obtained in five levels of coherence (corresponding to different signal-to-noise ratio). The results evidenced that motion, form and form-from-motion accuracy decreased in low-light condition. Furthermore, light condition effect was differently mediated by noise according to the type of task. The motion perception is affected only at high noise levels, while form discrimination was globally affected at all the levels, also in absence of noise, both for static (FC) and dynamic stimuli (FFM). We conclude that in rod-dominated vision form-from-motion perception is more defected than form and motion perception. We hypothesized that our results are due to the integration between M and P cells in FFM test increases the form perception accuracy in high-light condition but this advantage is completely lost during low-light condition, when the rods need to integrate information both from M and P cells.
    VL  - 6
    IS  - 6
    ER  - 

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Author Information
  • Department of Psychology, University of Bologna, Bologna, Italy

  • Department of Clinical Neuroscience, Karolinska Institutet, Bernadottelaboaratoriet, S: T Eriks ?gonsjukhus, Stockholm, Sweden

  • Department of Psychology, University of Bologna, Bologna, Italy

  • Department of Clinical Neuroscience, Karolinska Institutet, Bernadottelaboaratoriet, S: T Eriks ?gonsjukhus, Stockholm, Sweden

  • Department of Psychology, University of Bologna, Bologna, Italy

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