Note Vision Of Rapid Identification And Classification

It is well known that we may attend elsewhere when we fixate somewhere. How wide range can we pay attention when we fixate our eyes? That is, what does the visuospatial topography of attention look like? No research reported it detailedly.In this paper, behavior psychological experiments that include discrimination of letters and rapid categorization of natural images, were used to investigate visuospatial topography of attention when visual rapid recognition which were fundamentally cognitive behaviors and basic survival nature for most animals. Letters and natural images were presented in different locations of visual field for 20ms, and then masked. The tasks required subjects to focus attention on the fixation point and discriminate letters or categorize natural images.The results indicated that performances of both tasks decreased with the increasing of eccentricity. In rapid discrimination of letters, performances in Horizontal and Vertical locations were similar, and higher than that of Oblique locations, so visuospatial topography of attention looked like a diamond. While in rapid categorization of natural images, performance order from high to low was Horizontal, Oblique and Vertical locations. As a result, visuospatial topography of attention was similar to ellipse. We believed that the different topography of attention was the result of different nature of the two tasks.