Identification of Alphabetic Symbols as a Function of their Location in the Visual Periphery.

摘要

A preliminary study in a proposed program of research to develop improved design criteria for peripheral vision displays was performed. Binocular peripheral identification of alphabetic symbols was measured for four subjects at four angular distances from a fixation point (3, 6, 12 and 24 degrees) and along eight equally spaced meridia in the visual field. Response measures were choice reaction time and accuracy scores. Results show: (1) a relatively constant and high level of peripheral identification along all meridia out to a 12-degree, angular distance from central fixation; (2) extension of this high identification performance out to 24 degrees along both right and left horizontal meridia; (3) significant differences in peripheral identifiability of the four alphabetic symbols used; (4) no significant bilateral performance differences related to dual cerebral control. An important display implication of the data concerns the potential advantage of placing letters to be identified in the periphery along the horizontal visual axis. (Author)