Kawasaki M, Aoki K, Naka K
Vision Res. 1984;24(10):1197-204. doi: 10.1016/0042-6989(84)90175-5.
Incremental sensitivity of cones and horizontal cells was examined in the retina of the channel catfish (Ictalurus punctatus). In horizontal cells, steady full-field background illumination made the spot-evoked dynamic response larger and faster. The "enhancement" of incremental sensitivity was maximal at background levels of 20-50 microW/cm2. Similar changes in response were obtained by enlarging the diameter of the test spot (to 4 mm) without background illumination. In cones, no such enhancement with background was observed and small (0.4 mm) and large (4.0 mm) spots produced similar responses. Similar enhancement by a steady background has been observed also in the proximal neurons of catfish retina.
在斑点叉尾鮰（Ictalurus punctatus）的视网膜中，研究了视锥细胞和水平细胞的增量敏感性。在水平细胞中，稳定的全场背景照明使光斑诱发的动态反应更大、更快。增量敏感性的“增强”在20 - 50微瓦/平方厘米的背景水平下最大。在无背景照明的情况下，通过扩大测试光斑的直径（至4毫米）也获得了类似的反应变化。在视锥细胞中，未观察到背景引起的这种增强，小光斑（0.4毫米）和大光斑（4.0毫米）产生相似的反应。在斑点叉尾鮰视网膜的近端神经元中也观察到了稳定背景引起的类似增强。
