The findings were consistent with the hypothesis and proved that emotion is organized motivationally by the intensity of activation in appetitive or defensive systems.
2.
The intensity of activation is dependent on the difficulty of the task, with the intraparietal sulcus showing more intense activation when the task is more difficult.
3.
Therefore, it is proposed that changes in the intensity of activation in the orbito-frontal cortex correlate with the determination of beauty ( higher activation ) or ugliness ( lower activation ).