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Fig. 7. A greater response in the rhinophore nerve to conspecific odour than to
control. (A) Extracellular activity was greatest in response to perfusion of
conspecific (consp.) odour through the sensory tuft, with a lesser increase
over baseline in response to control seawater. Bar indicates odour stimulus
duration. Scale: 8 µV between < and 
marks. (B) Raster plots
of extracellular spikes surpassing +9 µV but not +17 µV (< and
, respectively, in A) for all five trials on this rhinophore
(+,x,o indicate the raster plots for the recordings in A). (C) Mean
spike counts with standard error bars from all five trials grouped into ten
intervals. This rhinophore responded more strongly on average, to seawater
with conspecific odours than control seawater. Time for B and C is measured
relative to the perfusion stream switch for conspecific and control
applications, and an arbitrary time between trials for baseline. Broken lines
show time window used for spike count analysis.
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