Coile D C, Pollitz C H, Smith J C
Psychobiology/Neuroscience Program, Florida State University, Tallahassee 32306-1051.
Physiol Behav. 1989 Jun;45(6):1087-92. doi: 10.1016/0031-9384(89)90092-9.
Steady-state critical flicker-fusion frequencies (CFFs) were determined for four beagle dogs using the psychophysical technique of conditioned suppression. The CFFs obtained demonstrated that the dog can discriminate flicker at much faster rates than has been suggested by ERG data. In addition, dog rods may support the discrimination of flicker at much higher rates than can human rods. An indication of a psychophysical rod-cone break occurred at a luminance level intermediate to those previously reported in ERG CFF studies. This level is similar to that in the cat, but much higher than that in man. The high CFFs provide the first psychophysical evidence of a well-developed functioning cone system in the dog.
使用条件抑制的心理物理学技术测定了四只比格犬的稳态临界闪烁融合频率（CFF）。所获得的CFF表明，狗能够以比视网膜电图（ERG）数据所提示的快得多的速率辨别闪烁。此外，狗的视杆细胞可能比人类视杆细胞能以更高的速率支持闪烁辨别。在一个亮度水平上出现了心理物理学上视杆 - 视锥细胞转折的迹象，该亮度水平处于先前ERG CFF研究中所报告的亮度水平之间。这个水平与猫的相似，但比人的高得多。高CFF提供了狗中发育良好且功能正常的视锥系统的首个心理物理学证据。
