Figure 3. Sample model fits to cone and rod flash responses. Flash: 2 ms, 519 nm.
A:
Carassius “green” cone, which exhibited maximum amplification. Average of 40 responses; effective intensity: 2.1 R*·μM
−3.
B: The
Carassius “red” cone with the lowest amplification. Average of 24 responses; effective intensity: 25 R*·μM
−3. Two alternative fits with drastically different parameters are shown to illustrate the ambiguity of an unrestrained model.
Parameters of the fits are given in
Table 4.
C: Frog rod. Average of 10 responses; effective intensity: 0.028 R*·μM
−3. Noisy lines: nonfiltered experimental responses; smooth lines: model fits with the parameters given in
Table 2. The coefficient of correlation between the experimental and model curves in
A–
C is between 0.995 and 0.997.