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本文用实验方法从时域和频域上揭示了瞳孔对光反应的非线性特性.在亮度以正弦变化的光刺激下,瞳孔反应波形呈同步倍频现象;描述函数的频率-振幅特性曲线呈多峰的锯齿形;具有1.2Hz左右的系统固有频率和极限环现象.
In this paper, the nonlinearity of pupil response to light is revealed experimentally from the time domain and the frequency domain. Under the stimulation of light with sinusoidal brightness, the pupil response waveform shows synchronous frequency doubling phenomenon. The frequency-amplitude characteristic curve of the describing function Multi-peak zigzag shape; with 1.2Hz system natural frequency and limit ring phenomenon.