Mechanism and evolution of color vision in microbrain systems

以蝴蝶为模型系统，研究了颜色视觉的神经基础。比较研究表明，(1)光感受器光谱敏感度通常是两性二态的，(2)不同物种的纹状体分层程度相当不同。对Papilio视觉系统的分析表明，(3)觅食Papilio在着陆时利用亮度对比度来检测目标边缘，(4)光感受器之间的联系可能是抑制的。

We studied neural basis of color vision using butterflies as the model system. Comparative studies revealed that (1) the photoreceptor spectral sensitivities are often sexually dimorphic, and (2) the degree of rhabdom tiering is quite diverse among species. The analysis of Papilio visual system revealed that (3) foraging Papilio detect the target edge using brightness contrast upon landing, and that (4) the interphotoreceptor connections may be inhibitory.