United Arab Emirates Map Tourist Attractions on situated near or directed toward the trunk or center of an organism. 2. near, or mostly closely related, to the point of reference or origin. Compare distal. proximally adv. proximal stimulus the physical energy from a stimulus as it directly stimulates a sense organ or receptor, in contrast to the distal stimulus in the actual environment. In reading, for example, the distal stimulus is the print on the page of a book, whereas the proximal stimulus is the light energy reflected by the print that stimulates the photoreceptors of the retina. United Arab Emirates Map Tourist Attractions 2016.