title: Cortical Responses and Shape Complexity of Stereoscopic Image - A Simultaneous EEG/MEG Study.
abstract: OBJECTIVE
  In exploring human factors, stereoscopic 3D images have been used to investigate the neural responses associated with excessive depth, texture complexity, and other factors. However, the cortical oscillation associated with the complexity of stereoscopic images has been studied rarely. Here, we demonstrated that the oscillatory responses to three differently shaped 3D images (circle, star, and bat) increase as the complexity of the image increases.
  
  
  METHODS
  We recorded simultaneous EEG/MEG for three different stimuli. Spatio-temporal and spatio-spectro-temporal features were investigated by non-parametric permutation test.
  
  
  RESULTS
  The results showed that N300 and alpha inhibition increased in the ventral area as the shape complexity of the stereoscopic image increased.
  
  
  CONCLUSIONS
  It seems that the relative disparity in complex stereoscopic images may increase cognitive processing (N300) and cortical load (alpha inhibition) in the ventral area.
authors: School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju, Korea.
authors: Hohyun
authors: H
authors: Cho
authors: Min-Koo
authors: MK
authors: Kang
authors: Sangtae
authors: S
authors: Ahn
authors: Moonyoung
authors: M
authors: Kwon
authors: Kuk-Jin
authors: KJ
authors: Yoon
authors: Kiwoong
authors: K
authors: Kim
authors: Sung Chan
authors: SC
authors: Jun
keywords: Cognitive processing; Cortical load; Depth perception; EEG; MEG; Shape complexity; Stereoscopic depth