CHANGES IN FIELD SPECTRAL SENSITIVITIES OF RED-SENSITIVE, GREEN-SENSITIVE AND BLUE-SENSITIVE COLOR MECHANISMS OBTAINED ON SMALL BACKGROUND FIELDS
CHANGES IN FIELD SPECTRAL SENSITIVITIES OF RED-SENSITIVE, GREEN-SENSITIVE AND BLUE-SENSITIVE COLOR MECHANISMS OBTAINED ON SMALL BACKGROUND FIELDS
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DOI：
10.1016/0042-6989(81)90215-7
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发表时间：
1981-01-01
期刊：
影响因子：
1.8
通讯作者：
FOSTER, DH
中科院分区：
文献类型：
--
作者：
FOSTER, DH
当在一个小的稳定背景场（辅助调节场）的存在下，确定红色和绿色敏感的颜色机制的场光谱灵敏度时，在空间上与测试场重合，可以发现得到的曲线变窄，并在波长轴上彼此远离。这些尖锐的曲线倾向于分别在605 nm和530 nm的波长处达到峰值。光谱锐化确定[在人类]的强度，波长和辅助调节字段的大小的变化，并为测试闪光的波长和持续时间的变化。强度-波长依赖性的辅助字段，产生一个恒定的光谱锐化的红色敏感机制是无法区分的锐化字段光谱灵敏度曲线的绿色敏感机制。红色和绿色敏感机制发生最大光谱锐化的测试闪光的波长分别为610-620 nm和530 nm。当测试闪光持续时间较短时，光谱锐化会减少或消除。对于蓝色敏感机制，在中等到高强度下没有明显的光谱锐化。光谱锐化随视场大小的变化强烈依赖于测试场的大小。当根据皮层放大因子M对数据进行缩放时，可以使这种依赖性近似恒定。光谱锐化被废除，或严重减少，当辅助领域提出dichoptically。这些研究结果被认为是在有关的颜色编码的一致性过程理论，该网站的重合的非线性场效应和其他数据之间的相互作用的颜色机制。
When field spectral sensivities of the red- and green-sensitive color mechanisms are determined in the presence of a small steady background field (auxiliary conditioning field), spatially coincident with the test field, the resulting curves may be found to be narrowed and shifted away from each other on the wavelength axis. These sharpened curves tend to peak at wavelengths of 605 nm and 530 nm, respectively. Spectral sharpening was determined [in humans] for variations in the intensity, wavelength and size of the auxiliary conditioning field, and for variations in the wavelength and duration of the test flash. The intensity-wavelength dependence of an auxiliary field that produces a constant spectral sharpening of the red-sensitive mechanism is indistinguishable from the sharpened field spectral sensitivity curve of the green-sensitive mechanism. The wavelengths of the test flash at which maximum spectral sharpening of the red- and green-sensitive mechanisms occurs are 610-620 nm and 530 nm, respectively. Spectral sharpening is reduced or eliminated when the test flash has short duration. No spectral sharpening is apparent at moderate-to-high intensities for the blue-sensitive mechanism. The variation of spectral sharpening with auxiliary-field size depends strongly on test-field size. This dependence could be made approximately constant when data were scaled according to cortical magnification factor M. Spectral sharpening is abolished, or severely diminished, when the auxiliary field is presented dichoptically. These findings are considered in relation to an opponent-process theory of color encoding, the site of the coincident auxiliary-field effect and other data on interactions among color mechanisms.