A functional image generating unit that generates a functional image from a magnetic resonance image generated by collecting a magnetic resonance signal from a subject who executes a task with an intermission of a resting period. An image generation controlling unit controls the functional image generating unit so that a plurality of functional images along a time series are generated by separating a plurality of magnetic resonance images generated along the time series during a collecting period (in which the resting period and a task-execution period are repeated a plurality of times along the time series) into image groups, each corresponding to a predetermined temporal phase. A statistical process is performed on each of the image groups and a display controlling unit exercises control so that the functional images are displayed by a display unit.