the article presents explanation and analysis of plotinus’ abstraction theology. in this theology he tries to get negative knowledge of the god. the meaning of the negation is neither of pure negation or privation but it is based on abstraction which purifies and abstracts one concept from else to attain the exact and true meaning of it. accordingly, this method of theology is the same as the r...

Perceptual learning of motion direction discrimination is generally thought to rely on the middle temporal area of the brain (MT/V5). A recent study investigating learning of motion discrimination when MT was psychophysically suppressed found that learning was possible with suppressed MT, but only when the task was sufficiently easy [Lu, H., Qian, N., Liu, Z. (2004). Learning motion discriminat...

Area MT has been an important target for studies of motion processing. However, previous neurophysiological studies of MT have used simple stimuli that do not contain many of the motion signals that occur during natural vision. In this study we sought to determine whether views of area MT neurons developed using simple stimuli can account for MT responses under more naturalistic conditions. We ...