Siminoff R
Biol Cybern. 1984;50(3):213-34. doi: 10.1007/BF00340027.
Two classes of amacrine cells are simulated, small-field and large-field. Small-field amacrine cells are formed by input from a single bipolar cell, while large-field amacrine cell is formed by inputs from same 7 bipolar cells that form the ganglion cell. Only tonic amacrine cells are studied with both chromatic and luminosity types as well as double- and single-opponent receptive fields. Amacrine cells are used in both feedforward to ganglion cells and feedback to bipolar and horizontal cells. Feedback to bipolar cells or feedforward to ganglion cells affected steady state levels in a predictable fashion. Negative feedback to bipolar cells and positive feedforward to ganglion cells does not introduce transients to ganglion cells while negative feedback to horizontal cells and negative feedforward does. Feedback to horizontal cells produces complex effects on bipolar, amacrine and ganglion cells dependent on such factors as center-surround field balance and negative feedback from luminosity type of horizontal cell to cones.
模拟了两类无长突细胞，即小视野和大视野无长突细胞。小视野无长突细胞由单个双极细胞的输入形成，而大视野无长突细胞由形成神经节细胞的相同7个双极细胞的输入形成。仅研究了紧张型无长突细胞，包括颜色和亮度类型以及双拮抗和单拮抗感受野。无长突细胞既用于前馈至神经节细胞，也用于反馈至双极细胞和水平细胞。反馈至双极细胞或前馈至神经节细胞以可预测的方式影响稳态水平。对双极细胞的负反馈和对神经节细胞的正前馈不会给神经节细胞引入瞬变，而对水平细胞的负反馈和负前馈则会。对水平细胞的反馈会对双极细胞、无长突细胞和神经节细胞产生复杂影响，这取决于诸如中心-外周场平衡以及水平细胞亮度类型对锥体细胞的负反馈等因素。
