c 



61- 



-6 



2 -4 



I 



-6 - 



B • 



'-Z 



I 



111' 



i 



.1 



c • 



.1 



1 



1 1 





!• 



.r 



.1 



2 4 6 



RECEPTOR POTENTIAL mV 



Fig. 30. The relationship between impulse height and receptor 

 potential amplitude in three different insect mechanosensory 

 neurons, measured by a recording pipette placed over the tip of a 

 sensillum. The change in impulse amplitude is thought to be due 

 to an increase in the conductance of the neuronal membrane beneath 

 the recording electrode. (From Wolbarsht,^"* Fig. 9.) 



69 



