Fig. 9.

A detailed example of the P3b responses in 2 representative subjects (Pz channel). In the old subject, male, 75 years old, the response by the target stimulus in the White condition, is reduced in amplitude in respect to the response in red and green conditions (represented with these colors). In the young subject, male, 30 years old, the target P3b waves have a similar amplitude, independently from the color of the stimulus