Interactions of rod and cone signals in the mudpuppy retina.
Interactions of rod and cone signals in the mudpuppy retina.
复制标题
泥小狗视网膜中视杆细胞和视锥细胞信号的相互作用。
DOI：
--
复制
发表时间：
1975
期刊：
影响因子：
--
通讯作者：
G. Fain
中科院分区：
文献类型：
--
作者：
G. Fain
通过细胞内记录研究了泥犬视网膜神经元中视杆细胞和视锥细胞信号之间的相互作用。 2. mudpuppy 视网膜包含一种视杆细胞 (lambda max = 525 nm) 和一种视锥细胞 (lambda max = 572 nm)。受体的响应可以根据其光谱敏感性来区分。 3. 杆状反应和锥状反应具有不同的恢复时间过程和绝对灵敏度。受体反应之间的差异可用于描述中间神经元的输入。 4. 水平细胞有两种光谱类别：L型和C型。 L型细胞被不同比例的视杆细胞和视锥细胞超极化，其中一些细胞接受很少的视杆细胞输入。 C型细胞通过视杆细胞超极化并通过视锥细胞去极化。 5.双极细胞感受野中心接收来自视锥细胞或视杆细胞和视锥细胞的输入。中心响应的光谱特性与其极性之间不存在相关性。 6. 双极细胞的拮抗周围表现出视锥细胞或视杆细胞和视锥细胞敏感性。它们被认为是由 L 型水平细胞产生的。 7. 一些双极细胞表现出中心视锥细胞信号和周围视杆细胞信号之间的色彩相互作用，这类似于已知具有颜色辨别能力的物种中不同光谱类别的视锥细胞信号之间观察到的相互作用。 8. 无长突和开关神经节细胞具有 L 型反应，显示视杆细胞和视锥细胞敏感性。 9. 有人提出，在泥巴小狗中观察到的视杆细胞和视锥细胞信号之间的相互作用也存在于灵长类动物的视网膜中，并且至少部分地解释了视杆细胞和视锥细胞相互作用的某些心理物理学观察。
Interactions between rod and cone signals in mudpuppy retinal neurones were investigated by intracellular recording. 2. The mudpuppy retina contains one kind of rod (lambda max = 525 nm) and one kind of cone (lambda max = 572 nm). The responses of receptors can be distinguished on the basis of their spectral sensitivities. 3. Rod and cone responses have different time courses of recovery and absolute sensitivities. Differences between receptor responses can be used to describe inputs to interneurones. 4. There are two spectral classes of horizontal cells: L‐type and C‐type. L‐type cells are hyperpolarized by rods and cones in varying proportion, with some cells receiving little rod input. C‐type cells are hyperpolarized by rods and depolarized by cones. 5. Bipolar cell receptive field centres receive input from cones or from rods and cones. There is no correlation between the spectral properties of centre responses and their polarity. 6. Antagonistic surrounds of bipolar cells show cone or rod and cone sensitivity. They are believed to be generated by the L‐type horizontal cells. 7. Some bipolar cells exhibit chromatic interactions between cone signals in the centre and rod signals in the surround, which resemble those observed between the signals of different spectral classes of cones in species known to possess colour discrimination. 8. Amacrine and on‐off ganglion cells have L‐type responses showing both rod and cone sensitivity. 9. It is proposed that interactions between rod and cone signals observed in mudpuppy also exist in primate retina and are at least partially responsible for certain psychophysical observations of rod‐cone interactions.