ERG consist of 4 parts in the compound eyes of green lacewing-on light reaction, positive pontential, long negative pontential and off light reaction, their size and shape can be influenced by wavelength, light-intensity and stimulation time. 民的n&}Klik91由4个部分组成:开光反应、正相电位、持续负电位和闭光反应,光强、波长及刺激时程对其各成分都有一定影响。