Stereoscopic 3D objects evoke stronger saliency for nonverbal working memory: An fMRI study |
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| Authors: | Byoung‐Ju Yun Sung‐Uk Jin Sang‐Hoon Lee Shi‐Hyun Ahn Yusun Min Tae‐Du Jung Hui Joong Lee Yongmin Chang |
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| Affiliation: | 1. School of Electronics Engineering, College of IT Engineering, Kyungpook National University, Daegu, Korea;2. Department of Medical & Biological Engineering, Kyungpook National University, Daegu, Korea;3. 3D Convergence Technology Center, Kyungpook National University, Daegu, Korea;4. Department of Physical Medicine and Rehabilitation, Kyungpook National University School of Medicine & Hospital, Daegu, Korea;5. Department of Radiology, Kyungpook National University School of Medicine, Daegu, Korea;6. Department of Molecular Medicine & BK21 Plus KNU Biomedical Convergence Program, Kyungpook National University School of Medicine, Daegu, Korea |
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| Abstract: | Effective working memory (WM) training is often desired to improve WM. Recent studies have suggested that WM training is more successful when participants monitor scenes in three‐dimensional (3D) environments. Although previous neuroimaging studies have examined visuospatial WM in relation to a 3D scene or object, these studies did not investigate WM using stereoscopic 3D object stimuli. We used functional magnetic resonance imaging (fMRI) to identify brain activation during an N‐back task with 3D object stimuli, and determined the difference in activation pattern between stereoscopic versus shaded 3D objects. We found that the anterior insula, ventral striatum, and posterior orbitofrontal cortex showed greater activation during the 2‐back task with stereoscopic 3D objects than with shaded 3D objects. These regions have previously been associated with a salience network. |
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| Keywords: | stereoscopic objects 3D functional magnetic resonance imaging saliency |
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