Reference code: | PT/FB/BL-2008-119.02 |
Location: | Arquivo PCA - Pasta 23/2008
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Title:
| Luminance adjustment: never fear again
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Publication year: | 2015
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URL:
| https://www.google.pt/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0CCcQFjABahUKEwiFsMqk3OnGAhXmfHIKHXp7APE&url=https%3A%2F%2Forbilu.uni.lu%2Fbitstream%2F10993%2F21083%2F1%2FInPACT%25202015.pdf&ei=--qsVcXGOOb5yQP69oGIDw&usg=AFQjCNED63VqcCKZNhIVB1w0GqdpQ79pHQ&sig2=So7ivnUvMakLgjveLsmXmg&bvm=bv.98197061,d.ZGU
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Abstract/Results: | ABSTRACT:
The control of experimental variables is a crucial step in methodological research planning. In experimental psychology one can use stimuli to promote behavioral and physiological responses. The analysis of the physiological responses implies that the generation of the stimuli must be particularly careful. Certain physical properties of stimuli can override the psychological properties that are being evaluated, for that reason it is important to ensure their constancy. In particular, the measurement of the pupil diameter of the human eye under a visual stimulus gives an indicator of the sympathetic nervous system activation. To carry out such measurements it is necessary to guarantee that the luminance level of the visual stimulus must be kept constant. In general, a large set of visual stimuli has to be considered and the procedure for the luminance adjustments is a real time consuming task since the luminance level of the final stimulus is important for the activity of the pupil. In this paper is presented and described the developed methodology to make such luminance adjustments easier.
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Accessibility: | Document exists in file
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Language:
| eng
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Author:
| Rodrigues, P.
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Secondary author(s):
| Clara, C., Simões, M. F., Fiadeiro, P.
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Document type:
| Conference paper
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Number of reproductions:
| 1
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Reference:
| Rodrigues, P., Clara, C., Simões, M. F., & Fiadeiro, P. (2015). Luminance adjustment: never fear again. In Pracana, C. (Eds.), Proceedings of INPACT 2015 - International Psychological Applications Conference and Trends (pp. 348-350). Lisbon, Portugal: World Institute for Advanced Research and Science
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Indexed document: | No
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Keywords: | Visual stimuli / Luminance level / Contrast
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Luminance adjustment: never fear again |