Figure 5.

Multielectrode recordings from a Cantareus aspersa procerebrum show oscillatory activity that is activated by odor stimulation. Top: Image of Cantareus snail ganglia on electrode array with displayed electrodes identified with arrows. Lower panel: Spike activity recorded simultaneously on several electrodes (electrode number as indicated). Colors correspond to the particular electrode trace shown. The frequency of spike activity is significantly increased in response to odorant molecules (bay oil) applied to the olfactory epithelium on the optical tentacle.