The so-called too much, "stimulation " beyond a certain limit will not play a role. Experiments have shown that, in terms of the number of concerns, the reduction in the likelihood of attention is much faster than one might expect. Adding a second sign would not halve the likelihood that the first sign would be noticed, and the impact of the third sign would be greater.
The average person's visual attention range does not exceed seven, for example, a short period of time to present letters, the average person can only see about six. Therefore, in the interior design, we should reasonably determine the commercial signs, the number of advertisements, the number of counters at the counter and the scope of space division. To grasp the appropriate intensity of stimulation.