Fratzer C, Dörr S, Neumeyer C
Institut für Zoologie, Johannes Gutenberg-Universität, Mainz, Germany.
Vision Res. 1994 Jun;34(11):1515-20. doi: 10.1016/0042-6989(94)90153-8.
Wavelength discrimination ability of the goldfish was measured with a behavioural training technique in the UV spectral range. First, spectral sensitivity was determined for the two fish to adjust the monochromatic lights (between 334 and 450 nm) to equal subjective brightness. The results of the wavelength discrimination experiment show that, independent of which wavelength the fish were trained on, the relative choice frequency reached values above 70% only at wavelengths longer than 410 nm. Wavelength discrimination between 344 and 404 nm was not possible. Accordingly, the delta lambda function increases steeply between 400 and 380 nm, with values between about 12 and 90 nm, respectively. Model computations indicate that the delta lambda function cannot be explained on the basis of the cone sensitivity spectra. Instead, inhibitory interactions have to be assumed which suppress the short wavelength flanks of the short-, mid-, and long-wavelength sensitive cone types in the UV range.
利用行为训练技术在紫外光谱范围内测量了金鱼的波长辨别能力。首先，确定了两条鱼的光谱敏感度，以便将单色光（334至450纳米之间）调整到主观亮度相等。波长辨别实验的结果表明，无论鱼接受训练的波长是多少，只有在波长大于410纳米时，相对选择频率才会达到70%以上。在344至404纳米之间无法进行波长辨别。因此，δλ函数在400至380纳米之间急剧增加，其值分别在约12至90纳米之间。模型计算表明，δλ函数无法基于视锥细胞敏感度光谱来解释。相反，必须假定存在抑制性相互作用，这种相互作用会在紫外范围内抑制短、中、长波长敏感视锥细胞类型的短波长侧翼。
