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Attention and numeration are two phenomena in cognitive sciences of brain. As the effect and interaction that these two activities have on each other, the importance of detecting differences between two phenomena is shown more than ever. Someone believes that the relation between two brain cognitive activities (i.e. attention and numeration) is close to the extent that they are considered as one....
This paper presents a brain-computer interface (BCI) in which the face paradigm was optimized for the visual mismatch negativity (MMN). There were 12 cells in a LCD monitor. A single letter was at the bottom of each cell. In the new paradigm, a color face appeared above each of the 12 cells randomly while the gray faces appeared in others 11 cells. A traditional face paradigm with single character...
In this study, a novel P300 based brain-computer interface (BCI) system using random set presentation pattern and employing the effect of face familiarity has been proposed and developed. While the effect of face familiarity is widely studied in the cognitive neurosciences, it has so far not been addressed for the purpose of BCI. We compare P300-based BCI performances of a conventional row-column...
Research on spatial attention has traditionally focused on spatially selective processing within a single sensory modality. But recent research has proved that selective attention is a mechanism that is not limited to a single sensory modality but can encompass or spread across multiple sensory systems. The present study investigated whether the crossmodal spatial attention influences the processing...
Attention to picture of face, particularly the human face is related to complex information processing in the brain. Humans pay more attention to human faces than other images. The purpose of this study is to verify the existence of particular attention to facial images and categorize the difference between attending to facial and non-facial images through a pair of different pictures as the targets...
It has been reported that if two sensory stimuli are presented consecutively with stimulus onset asynchrony (SOA) of as short as several hundreds of milliseconds, the neural activity, elicited by the second stimulus, in the stimulus-sensitive area will be inhibited, say, suppressive phenomenon. Using a paired-stimulus paradigm, in which two visual stimuli were successively presented, we investigated...
Now the neurophysiologic studies of shyness focus on the influence of expressional valence and facial new-old effects on face processing, but these studies disregard the possible neurophysiologic differences in the basic face recognition ability --face and object recognition. This study tries to find the neurophysiologic differences between 17 shy undergraduates and 17 nonshy undergraduates in facial...
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