International Journal of Zoological Research1811-97781811-9786Academic Journals Inc.10.3923/ijzr.2007.132.144PageMaurice -PierreHailesWalter CooperRobin L.3200733The neural circuitry used during the tail flip behavior of crayfish continues to serve as a model for investigating sensory integration and the actions of neuromodulators. Systemic injections of 5-HT produce an increase in responsiveness to sensory stimuli and decrease the rate of sensory habituation of the tail flip. In behaving animals the loss of the chelipeds also promotes a greater responsiveness to tail flipping on sensory stimulation of the telson. By transecting the Ventral Nerve Cord (VNC) it was demonstrated that the animals were less responsive to the tail flip reflex, implying that the sensory-VNC-motor circuit for the tail flip can be modulated in the animals by higher command neurons. However, the CNS isolated neuronal circuitry of the tail was still responsive to 5-HT. The results imply that there is direct CNS regulation as well possible hormonal action in intact behaving animals and that factors which alter one or the other could impinge on the tail flip escape behavior.]]>Ayali, A. and R.M. Harris-Warrick,19991967126722Bustamante, J. and F.B. Krasne,1991169369377Cooper, R.L., R.J. Chase and J. Tabor,2001916143151Djokaj, S., R.L. Cooper and W. Rathmayer,2001187145154Doernberg, S.B., S.I. Cromarty, R. Heinrich, B.S. Belt and E.A. Kravitz,200118791103Edwards, D.H., W.J. Heitler and F.B. Krasne,199922153161Fricke, R.A.,19861513518Glanzman, D.L. and F.B. Krasne,1983322632269Gleeson, R.A. and P.L. Zubkoff,1977Callinectes sapidus, utilizing 14C-thiocyanate.]]>6411413Heinrich, R., P. Braunig, I. Walter, H. Schneider and E.A. Kravitz,1999253235Herberholz, J., F.A. Issa and D.H. Edwards,20012127592767Horner, M., W.A. Weiger, D.H. Edwards and E.A. Kravitz,199720020172033Johnson, G.E.,1924Cambarus and Palaemonetes.]]>36323373Kellie, S., J. Greer and R.L. Cooper,2001290163176Kennedy, D., A.I. Selverston and M.P. Remler,196916414881496Krasne, F.B.,1969502946Krasne, F.B. and J.J. Wine,197563433450Krasne, F.B. and S.C. Lee,1988837033712Krasne, F.B. and T.M. Teshiba,19959233623366Krasne, F.B., A. Shamsian and R. Kulkarni,199717709716Krasne, F.B. and D.H. Edwards,200242705715Kravitz, E.A. and R. Huber,200313736743Lang, F., C.K. Govind, W.J. Costello and S.I. Greene,1977197682685Listerman, L.R., J. Deskins, H. Bradacs and R.L. Cooper,2000125251263Livingston, M.S., R.M. Harris-Warrick and E.A. Kravitz,19802087679McRae, T.,1996Cherax destructor (Clark) by serotonin and octopamine.]]>11293298Mesce, K.A.,200260339349Olsen, O.H., F. Nadim, A.A.V. Hill and D.H. Edwards,19967618501857Page, M.P. and R.L. Cooper,2004139149158Sneddon, L.U., A.C. Taylor, F.A. Huntingford and D.G. Watson,2000Carcinus maenas.]]>203537545Strawn, J.R., W.S. Neckameyer and R.L. Cooper,2000127533550Tabor, J.N. and R.L. Cooper,20022-like receptors at the crayfish neuromuscular junction.]]>9329198Teshiba, T., A. Shamsian, B. Yashar, S.R. Yeh, D.H. Edwards and F.B. Krasne,20012145234529Tierney, A.J. and L.A. Mangiamele,2001187757767Vu, E.T. and F.B. Krasne,199225517101712Vu, E.T., S.C. Lee and F.B. Krasne,19931343794393Wilkens, J.L., A.J. Mercier and J. Evans,1985Carcinus maenas.]]>82337343Wine, J.J., F.B. Krasne and L. Chen,197562771782Wine, J.J. and F.B. Krasne,19821982pp: 241-292pp: 241-292Yeh, S.R., R.A. Fricke and D.H. Edwards,1996271366369Yeh, S.R., B.E. Musolf and D.H. Edwards,199717697708