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. Author manuscript; available in PMC: 2010 Jun 1.
Published in final edited form as: Optom Vis Sci. 2009 Jun;86(6):708–716. doi: 10.1097/OPX.0b013e3181a61673

Figure 3.

Figure 3

Amplitude and phase of second harmonic responses and corresponding time constants as a function of contrast (depth of modulation) for the 1.5 c/deg condition. The lines represent the best model fits obtained using the amplitude and phase of the response jointly. Data from a 21-week-old, a 3-year-old and a 26-year-old are shown. Each participant’s age and eye tested are indicated. Note the different amplitude and time constant scales for the different observers. Error bars represent 95% confidence limits.