Transient Dyschromatopsia, Static Form Agnosia, and Prosopagnosia Observed in a Patient with Anti-NMDA Receptor Encephalitis

Figure 3

(a) Dot detection task. The patient was tested to see if motion of a visual stimulus affected her visual ability. A small black dot 0.4 cm in diameter was presented in the center of the screen for 3 seconds with no motion (stationary condition) or with right side lateral motion with a velocity of 2 cm/sec (moving condition). (b) Figure recognition task. The patient was tested to see if motion of a figure could influence her ability to identify it. Four different figures black in color were prepared; a circle, a star, a triangle, and a square, each of which was inscribed in a circle with a diameter of 1 cm. Each figure was presented in the center of the screen with no motion for 4 seconds (stationary condition) or with clockwise rotatory movement from the center tracing on a circle of 4 cm diameter with a velocity of 2 cm/sec for 4 seconds (moving condition).

(a)

(b)