Donald Kennedy President, Stanjord University Alnwst exactly a dozen
years elapsed between the time I set aside (I thought temporarily!J my
own interest in crustacean nervous systems and the arrival of an
invitation from Konrad Wiese to participate in this symposium. The
intervening years have plainly been productive ones for the field;
indeed, I can only hope that there is no causal connection between its
properity and my absence. Discontinuous contact with an intellectual
venture, whatever disappointments it may present. does oifer one virtue;
it provides a nwre dramatic. alnwst stroboscopic view of progress. To
the lapsed practitioner, the rate of advance in crustacean neurobiology
over the decade seems remarkable; equally remarkable is the number of
able young researchers. many of them the scientific progeny of my
colleagues from the "sixties" and "seventies" . How to summarize the
changes they have wrought? Those of us who began working with crustacean
nervous systems thirty years 090 or so were attracted by several
features. First of alt there was a limited nwtor system with readily
identifiable neurons. It was diJft.cult to look at those old methylene
blue stains of Retzius and not want to do an experiment immediately!
Kees Wiersma ojten did, and it was he who nwst persuasively called our
attention to the advantages oifered by neuronal parsinwny in combination
with stereotyped motor output patterning. Ted Bullock exploited these
features in his elegant early experiments on cardiac ganglia.