Hayes B P, Holden A L
J Comp Neurol. 1978 Jul 1;180(1):193-201. doi: 10.1002/cne.901800111.
The depth distribution of proximal negativity in the pigeon retina was investigated with a dye-marking technique. Proximal negativity is recorded in three stages as the retina is penetrated. At and near the surface (level 1) the response is small and phasic: next, during "level 2" the one response exceeds the off response in amplitude: then, at "level 3" the off response exceeds the on response in amplitude. The dye marks were located in thin light microscope sections; they were about 20 micrometer in diameter, and were associated with larger areas of tissue damage. Level 3 dye marks were centred at the middle of the inner plexiform layer, and level 2 dye-marks were distributed more proximally. The amplitude maxima of the PNR are close to the middle of the inner plexiform layer, and are separated by approximately 15 micrometer.
采用染料标记技术研究了鸽视网膜近端负电位的深度分布。当穿透视网膜时，近端负电位记录分为三个阶段。在视网膜表面及附近（第1层），反应较小且呈相位性；接下来，在“第2层”期间，一个反应在幅度上超过关闭反应；然后，在“第3层”，关闭反应在幅度上超过开启反应。染料标记位于薄的光学显微镜切片中；它们直径约为20微米，并与较大面积的组织损伤相关。第3层染料标记集中在内网状层中部，第2层染料标记分布更靠近近端。PNR的幅度最大值靠近内网状层中部，且相隔约15微米。
