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Cyclic AMP mediates serotonin-induced synaptic enhancement of lateral giant interneuron of the crayfish.
- M. Araki, T. Nagayama, Jordanna D H Sprayberry
- Chemistry, Medicine
- Journal of neurophysiology
- 1 October 2005
Results indicate that serotonin mediates an increase in cAMP levels in LG, but octopamine acts independently of cAMP and cGMP. Expand
Behavioral and Electrophysiological Experiments Suggest That the Antennular Outer Flagellum Is the Site of Pheromone Reception in the Male Helmet Crab Telmessus cheiragonus
- M. Kamio, M. Araki, T. Nagayama, S. Matsunaga, N. Fusetani
- Biology, Medicine
- The Biological Bulletin
- 1 February 2005
Behavioral and electrophysiological observations suggest that in male helmet crabs, the outer flagellum of the antennule is the chemosensory organ that detects female sex pheromone. Expand
Intersegmental ascending interneurones controlling uropod movements of the crayfish Procambarus clarkii
These ascending interneurones seem to act as multifunctional units conveying sensory information from the tailfan to the anterior abdominal ganglia and, at the same time, influencing the uropod motor pattern in the terminal abdominal ganglion. Expand
Development of agonistic encounters in dominance hierarchy formation in juvenile crayfish
With increasing body size, the probability of tailflips decreased while that of retreats increased as the submissive behavioural act of subordinate animals as well as the number of approaches by dominant animals that promoted retreat in subordinate animals increased after the establishment of the winner–loser relationship. Expand
The organization of exteroceptive information from the uropod to ascending interneurones of the crayfish
The organization of exteroceptive inputs to identified ascending interneurones of the crayfish, Procambarus clarkii (Girard), has been analyzed by stimulation of hairs on the uropod and simultaneous… Expand
Convergent chemical and electrical synaptic inputs from proprioceptive afferents onto an identified intersegmental interneuron in the crayfish.
The functional significance of the dual modes of transmission at a key synapse in the escape circuitry is discussed and these potentials are thought to be mediated by chemical transmission. Expand
L-GLUTAMATE AS AN EXCITATORY TRANSMITTER OF MOTOR GIANT NEURONS IN THE CRAYFISH PROCAMBARUS CLARKII
Results strongly suggest that L-glutamate is the neurotransmitter at the neuromuscular junction between MoG and the abdominal fast flexor muscle in the crayfish. Expand
Modulatory effects of nitric oxide on synaptic depression in the crayfish neuromuscular system.
- H. Aonuma, T. Nagayama, M. Takahata
- Biology, Medicine
- The Journal of experimental biology
- 1 December 2000
The opposing effects on EJP amplitude of NOC7 and of carboxy-PTIO and l-NAME suggest that endogenous NO presynaptically modulates neuromuscular transmission and that it could play a prominent role at nerve terminals in eliciting MoG-mediated synaptic depression in the crayfish Procambarus clarkii. Expand
Opposing parallel connections through crayfish local nonspiking interneurons
The PL and the AL interneurons are fractionated in function and distinguishable in terms of their physiology by their input and output correlations. Expand
Morphological and physiological bases of crayfish local circuit neurones.
The crayfish, Procambarus clarkii, uropods are paired appendages of the last abdominal segment that show bilateral closing movement in response to mechanical stimulation, mediated by a cascade and parallel organization of local circuit neurones in the terminal abdominal ganglion. Expand