Activation of two forms of locomotion by a previously identified trigger interneuron for swimming in the medicinal leech

Baader AP (1997) Interneuronal and motor patterns during crawling behavior of semi-intact leeches. J Exp Biol 200:1369–1381

Briggman KL, Kristan Jr WB (2006) Imaging dedicated and multifunctional neural circuits generating distinct behaviors. J Neurosci 26:10925–10933

Briggman KL, Abarbanel HDI, Kristan Jr WB (2005) Optical imaging of neuronal populations during decision-making. Science 307:896–901

Brodfuehrer PD, Burns A (1995) Neuronal factors influencing the decision to swim in the medicinal leech. Neurobiol Learn Mem 63:192–199

Brodfuehrer PD, Friesen WO (1986a) Control of leech swimming activity by the cephalic ganglia. J Neurobiol 17:697–705

Brodfuehrer PD, Friesen WO (1986b) Initiation of swimming activity by trigger neurons in the leech subesophageal ganglion. I. Output connections of Tr1 and Tr2. J Comp Physiol A 159:489–502

Brodfuehrer PD, Parker HJ, Burns A, Berg M (1995) Regulation of the segmental swim-generating system by a pair of identified interneurons in the leech head ganglion. J Neurophysiol 73:983–992

Brodfuehrer PD, Tapyrik L, Pietras N, Zekavat G, Convery M (2006) Modification of leech behavior following foraging for artificial blood. J Comp Physiol A 192:817–825

Cacciatore TW, Rozenshteyn R, Kristan Jr WB (2000) Kinematics and modeling of leech crawling: evidence for an oscillatory behavior produced by propagating waves of excitation. J Neurosci 20:1643–1655

De-Miguel FF, Trueta C (2004) Synaptic and extrasynaptic secretion of serotonin. Cell Mol Neurobiol 25:297–312

Eisenhart FJ, Cacciatore TW, Kristan Jr WB (2000) A central pattern generator underlies crawling in the medicinal leech. J Comp Physiol A 186:631–643

Esch T, Kristan Jr WB (2002) Decision-making in the leech nervous system. Integr Comp Biol 42:716–724

Esch T, Mesce KA, Kristan Jr WB (2002) Evidence for sequential decision making in the medicinal leech. J Neurosci 22:11045–11054

Hedwig B (2000) Control of cricket stridulation by a command neuron: efficacy depends on the behavioral state. J Neurophysiol 83:712–722

Kristan Jr WB, Calabrese RL (1976) Rhythmic swimming activity in neurons of the isolated nerve cord of the leech. J Exp Biol 65:643–668

Kristan Jr WB, Calabrese RL, Friesen WO (2005) Neuronal control of leech behavior. Prog Neurobiol 76:279–327

Leake LD (1986) Leech Retzius cells and 5-Hydroxytrptamine. Comp Biochem Phsyiol 83C:229–239

Libersat F, Pflueger H (2004) Monoamines and the orchestration of behavior. Bioscience 54:17–25

Marder E, Calabrese R (1996) Principles of rhythmic motor pattern generation. Physiol Rev 76:687–718

Mason A, Kristan Jr WB (1982) Neuronal excitation, inhibition and modulation of leech longitudinal muscle. J Comp Physiol 146:527–536

Matsuura T, Kanou M, Yamaguchi T (2002) Motor program initiation and selection in crickets, with special reference to swimming and flying behavior. J Comp Physiol A 187:987–995

Muller KJ, Nicholls JG, Stent GS (1981) Neurobiology of the leech. Cold Spring Harbor Laboratory, Cold Spring Harbor

Popescu I, Frost W (2002) Highly dissimilar behaviors mediated by a multifunctional network in the marine mollusk Tritonia diomedea. J Neurosci 22:1985–1993

Shaw BK, Kristan Jr WB (1997) The neuronal basis of the behavior choice between swimming ans shortening in teh leech: control is not selectively exercised at higher circuit levels. J Neurosci 17:786–795

Siddall ME, Trontelj P, Utevsky SY, Nkamany M, Macdonald KS (2007) Diverse molecular data demonstrate that commercially available medicinal leeches are not Hirudo medicinalis. Proc Roy Soc Lond B 274:1481–1487

Stern-Tomlinson W, Nusbaum MP, Perez LE, Kristan Jr WB (1986) A kinematic study of crawling behavior in the leech, Hirudo medicinalis. J Comp Physiol A 158:593–603

Szczupak L, Kristan Jr WB (1995) Widespread mechanosensory activation of the serotonergic system of the medicinal leech. J Neurophysiol 74:2614–2624

Velazquez-Ulloa N, Blackshaw SE, Szczupak L, Trueta C, Garcia E, De-Miguel FF (2003) Convergence of mechanosensory inputs onto neuromodulatory serotonergic neurons in the leech. J Neurobiol 54:604–617

Watson JT, Ritzman RE (1994) The escape response versus the quiescent response of the American cockroach: behavioral choice mediated by physiological state. Anim Behav 48:476–478

Wilson RJA, Kleinhaus AL (2000) Segmental control of midbody peristalsis during the consummatory phase of feeding in the medicinal leech, Hirudo medicinalis. Behav Neurosci 114:635–646

Wilson RJA, Kristan Jr WB, Kleinhaus AL (1996) An increase in activity of serotonergic retzius neurones may not be necessary for the consummatory phase of feeding in the leech Hirudo medicinalis. J Exp Biol 199:1405–1414

Wood D, Manor Y, Nadim F, Nusbaum M (2004) Intercircuit control via rhythmic regulation of projection neuron activity. J Neurosci 24:7455–7463

Zelenin P (2005) Activity of individual reticulospinal neurons during different forms of locomotion in the lamprey. Eur J Neurosci 22:2271–2282