Robinson D N
Science. 1970 Jan 9;167(3915):207-8. doi: 10.1126/science.167.3915.207.
Critical flicker-fusion thresholds were measured with both solid disks and annular stimuli. The former subtended 1, 4, and 8 degrees of visual angle, and the latter subtended 4 and 8 degrees. The illuminated region of the 4-degree annulus provided the same area of stimulation as that of the 1-degree disk. The illuminated region of the 8-degree annulus provided the same area of stimulation as the 4-degree disk. Annular stimuli significantly reduced critical flicker-fusion thresholds relative to those obtained with disk stimuli of the same area. The effects are not explicable in terms of heterogeneous retinal sensitivity. Laws relating critical flicker-fusion to area seem to be valid only under the restricted condition of homogeneous stimulation.
使用实心圆盘和环形刺激物测量临界闪烁融合阈值。前者所对视角为1度、4度和8度，后者所对视角为4度和8度。4度环形刺激物的照明区域提供的刺激面积与1度圆盘相同。8度环形刺激物的照明区域提供的刺激面积与4度圆盘相同。相对于相同面积圆盘刺激所获得的阈值，环形刺激显著降低了临界闪烁融合阈值。这些效应无法用视网膜敏感性不均一性来解释。临界闪烁融合与面积之间的关系似乎仅在均匀刺激的受限条件下才有效。
