Stereoscopic depth increases intersubject correlations of brain networks

作者：Gaebler Michael; Biessmann Felix^*; Lamke Jan Peter; Mueller Klaus Robert; Walter Henrik; Hetzer Stefan

来源：NeuroImage, 2014, 100: 427-434.

DOI：10.1016/j.neuroimage.2014.06.008

• Intersubject correlations
• Canonical correlation analysis (CCA)
• Natural viewing
• 3D movies
• fMRI
• Immersion

Three-dimensionalmovies presented via stereoscopic displays have become more popular in recent years aiming at a more engaging viewing experience. However, neurocognitive processes associated with the perception of stereoscopic depth in complex and dynamic visual stimuli remain understudied. Here, we investigate the influence of stereoscopic depth on both neurophysiology and subjective experience. Using multivariate statistical learning methods, we compare the brain activity of subjects when freely watching the same movies in 2D and in 3D. Subjective reports indicate that 3D movies are more strongly experienced than 2D movies. On the neural level, we observe significantly higher intersubject correlations of cortical networks when subjects are watching 3D movies relative to the same movies in 2D. We demonstrate that increases in intersubject correlations of brain networks can serve as neurophysiological marker for stereoscopic depth and for the strength of the viewing experience.

• 出版日期2014-10-15