Stare-in-the-crowd effect evolved from a necessity for fast and accurate gaze perception for complex social interactions (Emery 2000). According to this model, an eye direction detector (EDD) mechanism - a neurocognitive system responsible for the rapid detection of eyes in the environment and their gaze direction – arose as a function of the geometry created by a dark circular iris relative to the white sclera (Baron-Cohen 1994). Specifically, it is contended that the increased ratio of exposed sclera in the eye outline of humans serves to enhance the velocity and acuity of gaze direction perception (Kobayashi and Kohshima 2001). Baron-Cohen, S. (1994)
Guild Wars: Eye of the North 40 new armor sets, and 10 new "heroes", in addition to the new items, weapons, and titles added as usual in every "Guild Wars" campaign. It is in part intended to act as a bridge from "Guild Wars" to "Guild Wars 2" and introduces the new races of the "Norn" (dwellers on the icy slopes of the Shiverpeak Mountains to the north) and "Asura" (inhabitants of the southern part of the Maguuma Jungle), both of which would later become playable in the sequel. "Eye of the North" continues the "Prophecies" story, which is told in three acts. In Act I,