Characteristics and New Measurement Method of NCSFs of Individual Color Mechanisms of Human Vision
GE Jing-Jing1,2, WANG Zhao-Qi1,2, WANG Yan3, ZHAO Kan-Xing3
1Institute of Modern Optics, Nankai University, Tianjin 300071 2The Key Laboratory of Opto-electronic Information Science and Technology (Ministry of Education), Nankai University, Tianjin 300071 3Tianjin Eye Hospital, Refractive Surgery Center, Tianjin 300020
Characteristics and New Measurement Method of NCSFs of Individual Color Mechanisms of Human Vision
GE Jing-Jing1,2, WANG Zhao-Qi1,2, WANG Yan3, ZHAO Kan-Xing3
1Institute of Modern Optics, Nankai University, Tianjin 300071 2The Key Laboratory of Opto-electronic Information Science and Technology (Ministry of Education), Nankai University, Tianjin 300071 3Tianjin Eye Hospital, Refractive Surgery Center, Tianjin 300020
摘要We propose a new method for determining neural contrast sensitivity functions (NCSFs) of isolated color mechanisms based on the measurements of wave-front aberrations and isoluminant color contrast sensitivity functions (CSFs). Compared with the traditional method, this technique avoids the coherent noise and speckle noise, which are brought by the interference of laser beams, and has great flexibility for the measurements of NCSF of different color mechanisms. Our experiments indicate that the mean NCSF and CSF of the red mechanism are higher than those of the green mechanism, respectively, while those of the blue mechanism are the lowest. However the relative heights of the peak of NCSF and CSF between red and green mechanisms vary in subjects. There are some individuals whose peak values of NCSF and/or CSF of green mechanism are higher than that of the red mechanism. The NCSFs and CSFs of isolated color mechanisms all exhibit the similar characteristics and variation tendency. With the statistical average, the NCSFs of the red, green and blue mechanisms are higher than the corresponding CSFs in the whole spatial frequency. Compared with the corresponding CSFs curves, the peaks of the NCSFs of isolated color mechanisms shift toward higher spatial frequencies, especially for that of blue mechanism which has a largest shift of 3.9 c/deg.
Abstract：We propose a new method for determining neural contrast sensitivity functions (NCSFs) of isolated color mechanisms based on the measurements of wave-front aberrations and isoluminant color contrast sensitivity functions (CSFs). Compared with the traditional method, this technique avoids the coherent noise and speckle noise, which are brought by the interference of laser beams, and has great flexibility for the measurements of NCSF of different color mechanisms. Our experiments indicate that the mean NCSF and CSF of the red mechanism are higher than those of the green mechanism, respectively, while those of the blue mechanism are the lowest. However the relative heights of the peak of NCSF and CSF between red and green mechanisms vary in subjects. There are some individuals whose peak values of NCSF and/or CSF of green mechanism are higher than that of the red mechanism. The NCSFs and CSFs of isolated color mechanisms all exhibit the similar characteristics and variation tendency. With the statistical average, the NCSFs of the red, green and blue mechanisms are higher than the corresponding CSFs in the whole spatial frequency. Compared with the corresponding CSFs curves, the peaks of the NCSFs of isolated color mechanisms shift toward higher spatial frequencies, especially for that of blue mechanism which has a largest shift of 3.9 c/deg.
(Physiology of eye; optic-nerve structure and function)
引用本文:
GE Jing-Jing;WANG Zhao-Qi;WANG Yan;ZHAO Kan-Xing. Characteristics and New Measurement Method of NCSFs of Individual Color Mechanisms of Human Vision[J]. 中国物理快报, 2010, 27(5): 54201-054201.
GE Jing-Jing, WANG Zhao-Qi, WANG Yan, ZHAO Kan-Xing. Characteristics and New Measurement Method of NCSFs of Individual Color Mechanisms of Human Vision. Chin. Phys. Lett., 2010, 27(5): 54201-054201.
[1] Bellucci R et al 2005 J. Cataract Refractive Surgery 31 4 [2] Alberto V et al 1998 Ann. Med. 30 4 [3] Cavonius C R and Estevez O 1975 J. Physiol. 248 649 [4] Campbell F W and Green D G 1965 J. Physiol. 181 576 [5] Dressler M and Rassow B 1981 Invesr. Ophthalmol. 21 737 [6] David R W 1985 J. Opt. Soc. Am. A l2 7 [7] Felipe A, Artigas J M and Pons A M 1997 J. Opt. Soc. Am. A 14 5 [8] Liang J, Grimm B, Goelz S and Bille J 1994 J. Opt. Soc. Am. A 11 1948 [9] Zhao H X et al 2009 Chin. Phys. Lett. 26 5 [10] Zhao H X et al 2008 Chin. Phys. Lett. 25 4 [11] Wang W, Wang Z Q et al 2006 Chin. Phys. Lett. 23 3 [12] Liu M, Wang Z Q et al 2008 Opt. 119 8 [13] Andrew S and Lindsay T S 2000 Vision Research 40 1711 [14] Roorda A and Williams D R 1999 Nature 397 520
2010, Vol. 27 
