Fig. 9. (A) Graded increases in receptor 

 potential magnitude (lower traces) in response 

 to increases in strength of a mechanical stimulus 

 (monitored on upper traces). (B) Summation 

 of paired responses as the interval between equal- 

 strength mechanical stimuli was reduced. Time 

 marks appear at one millisecond intervals. (From 

 Gray and Sato,^^ Figs. 6 and 13.) 



Fig. 9 (A) 



Fig. 9 (B) 

 28 



