Fig. 26. Response of a blowfly retinula cell to light. (A) Electrical 

 record obtained by extracellular recording from the cell. (B) Intra- 

 cellular records obtained in response to lights of decreasing intensity, 

 a-e. Duration of the stimulus is indicated by the elevated region of 

 the upper trace in a. (From Washizu,"* Fig. i.) 



61 



