Human brain mapping of judgment system of movement of visualized material fMRI study

Visual system of creature has been frequently studied. In conventional study, anatomical and physiological investigations using macaque monkey indicate functional streams within the extrastriate visual cortex and participation of V5 area in motion perception was revealed. On the other hand, the region used for motion judgment was not cleared. Moreover, the overall information flow from visual cortex to visual judgment is not cleared. In this paper, we focused on specifying a cortex for motion judgment and information flow in brain. For analysis, we used functional magnetic resonance imaging (fMRI). The short videos of moving ball (lasting 1 s) and stationary ball (lasting 1 s) were randomly presented to subjects repeatedly. Each paradigm consisted of two main conditions (control and activation condition). During control, subjects continued tapping regardless of stimuli. During activation condition, subjects tap only when the video of moving ball was presented (motion judgment). In our research, the activation in frontal cortex (Brodmann 9) was detected during judgment task.