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Visual fatigue caused by watching 3DTV: an fMRI study.

Chen C, Wang J, Li K, Liu Y, Chen X - Biomed Eng Online (2015)

Bottom Line: At first, blood-oxygen-level dependent (BOLD) signal changes during stimuli of checkerboard task were compared before and after one-hour watching 3D/2DTV, and subjective evaluation was conducted based on the questionnaire simultaneously.The results reveal that the 3D group shows more significant differences of brain activities in BA8, BA17, BA18 and BA19 than the 2D group during the checkerboard stimulation.These conclusions are useful for healthy and reasonable 3DTV watching as well as properly designing of 3D scenes.

View Article: PubMed Central - HTML - PubMed

ABSTRACT
The objective of this study is to observe the visual fatigue caused by watching 3DTV using the method of functional magnetic resonance imaging (fMRI). The data of fMRI during three kinds of visual stimulation tasks were obtained from twenty subjects. At first, blood-oxygen-level dependent (BOLD) signal changes during stimuli of checkerboard task were compared before and after one-hour watching 3D/2DTV, and subjective evaluation was conducted based on the questionnaire simultaneously. Then 3D and 2D images were used to stimulate healthy individuals to measure brain activities that correlated with stereoscopic vision. Finally, the relationship between front or back depth of field images and visual fatigue was investigated. The results reveal that the 3D group shows more significant differences of brain activities in BA8, BA17, BA18 and BA19 than the 2D group during the checkerboard stimulation. BA5, BA6, BA7 and BA8 were testified to have close relationship with stereoscopic perception via the 2D/3D images stimulation. Furthermore, the front depth of field image was proven to impose a more serious impact on visual fatigue than the back one. These conclusions are useful for healthy and reasonable 3DTV watching as well as properly designing of 3D scenes.

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Related in: MedlinePlus

Illustration of 3D and 2D images stimulus.
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Related In: Results  -  Collection

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Figure 2: Illustration of 3D and 2D images stimulus.

Mentions: In addition to justify the visual fatigue produced by watching 3D images, this program will also explore the variation of brain activation caused by the depth of field. The scheme of block design is shown in Figure 2. Ten stereoscopic images are displayed one by one, with each lasting for 3 seconds in part A and the same procedure is applied for 2D-images in part B. In part C, the blank screen stimuli is tested as a benchmark/calibration of the brain activation. There is a 9s-blank stimuli at the beginning for preparation, and then three conditions are presented alternately for four times. Therefore, the experiment lasts for 6 min 9s, and 123 acquisitions are obtained. The experiment is repeated twice, one for viewing the stereo images with front depth of the field, and another with back depth of the field.


Visual fatigue caused by watching 3DTV: an fMRI study.

Chen C, Wang J, Li K, Liu Y, Chen X - Biomed Eng Online (2015)

Illustration of 3D and 2D images stimulus.
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4306101&req=5

Figure 2: Illustration of 3D and 2D images stimulus.
Mentions: In addition to justify the visual fatigue produced by watching 3D images, this program will also explore the variation of brain activation caused by the depth of field. The scheme of block design is shown in Figure 2. Ten stereoscopic images are displayed one by one, with each lasting for 3 seconds in part A and the same procedure is applied for 2D-images in part B. In part C, the blank screen stimuli is tested as a benchmark/calibration of the brain activation. There is a 9s-blank stimuli at the beginning for preparation, and then three conditions are presented alternately for four times. Therefore, the experiment lasts for 6 min 9s, and 123 acquisitions are obtained. The experiment is repeated twice, one for viewing the stereo images with front depth of the field, and another with back depth of the field.

Bottom Line: At first, blood-oxygen-level dependent (BOLD) signal changes during stimuli of checkerboard task were compared before and after one-hour watching 3D/2DTV, and subjective evaluation was conducted based on the questionnaire simultaneously.The results reveal that the 3D group shows more significant differences of brain activities in BA8, BA17, BA18 and BA19 than the 2D group during the checkerboard stimulation.These conclusions are useful for healthy and reasonable 3DTV watching as well as properly designing of 3D scenes.

View Article: PubMed Central - HTML - PubMed

ABSTRACT
The objective of this study is to observe the visual fatigue caused by watching 3DTV using the method of functional magnetic resonance imaging (fMRI). The data of fMRI during three kinds of visual stimulation tasks were obtained from twenty subjects. At first, blood-oxygen-level dependent (BOLD) signal changes during stimuli of checkerboard task were compared before and after one-hour watching 3D/2DTV, and subjective evaluation was conducted based on the questionnaire simultaneously. Then 3D and 2D images were used to stimulate healthy individuals to measure brain activities that correlated with stereoscopic vision. Finally, the relationship between front or back depth of field images and visual fatigue was investigated. The results reveal that the 3D group shows more significant differences of brain activities in BA8, BA17, BA18 and BA19 than the 2D group during the checkerboard stimulation. BA5, BA6, BA7 and BA8 were testified to have close relationship with stereoscopic perception via the 2D/3D images stimulation. Furthermore, the front depth of field image was proven to impose a more serious impact on visual fatigue than the back one. These conclusions are useful for healthy and reasonable 3DTV watching as well as properly designing of 3D scenes.

Show MeSH
Related in: MedlinePlus