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In this study, we tried to identify the cortical areas associated with the experience of visual discomfort in the viewing of stereoscopic images. To this purpose, we first conducted a subjective assessment experiment to select, based on viewers' opinions, two sets of stereoscopic video sequences: one comprising video sequences generally rated as comfortable and the other comprising video sequences...
Humans use multiple sources of sensory information to estimate environmental properties and has innate ability to integrate information from heterogeneous data sources. How the multi-sensory and multimodal information are integrated in human brain? There is consensus that it depends on the prefrontal cortex (PFC). The PFC has top-down control (favor weak) and rule-based mechanisms, and we propose...
Sound is one of the media that brings information to human. However this information also distracted by noises that surround us. How human brain recognizes to the required sound is very much impressive. Vice versa, the human brain can learn to the new sound. Thus, we can just concentrate to the sound that we want to listen only. For instance, when two human communicate each other, to be precise in...
Despite the huge amount of information, the human brain is able to perceive and interpret visual signals in real time. One of reasons is that visual information is selectively sampled in the retina providing higher acuity in the center (where usually the most important information is) than in periphery. Humanoids vision can benefit from such space-variant representations of the visual field with utility...
This paper proposes a saliency-based attention model based on pulsed cosine transform that simulates the lateral surround inhibition of neurons with similar visual features. The model can be extended to Hebbian-based neural networks. The visual saliency can be represented in binary codes, which agrees with the firing pulse of neurons in human brain. In addition, motion saliency can be directly generated...
Both text and figure are important ways to represent data and information. Although many investigations on lexical, sentential representation and processing have been reported in cognitive neuroscience, the brain mechanism remains unclear on different neural substrates of representation and processing between text and figure. In our study, experimental materials were designed with the same content...
Jain et al. showed that a strong motion signal in one modality (visual/auditory) influences the perception of a simultaneously present weak motion signal in the other modality (auditory/visual) for motion along the three cardinal axes. Furthermore, they also observed auditory crossmodal motion aftereffects (MAE) for all directions and visual crossmodal MAE for vertical direction of motion. We developed...
A new color coding scheme which can fully retrieve the directional information of diffusion tensor image (DTI) with maximum use of the color space is proposed and implemented. This new scheme overcomes the loss of directional information in conventional schemes and easy to implement. Comparison between the new scheme and the conventional color coding method are presented using the DTI data of human...
The complex geometry of the human brain contains many folds and fissures, making it impossible to view the entire surface at once. Since most of the cortical activity occurs on these folds, it is desirable to be able to view the entire surface of the brain in a single view. This can be achieved using quasi-conformal flat maps of the cortical surface. Computational and visualization tools are now needed...
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