...Hitoshi Aonuma; Toshiki Nagayama; Masakazu Takahata ABSTRACT A characteristic physiological property of the neuromuscular junction between giant motor neurones (MoGs) and fast flexor muscles in crayfish is synaptic depression, in which repetitive electrical stimulation of the MoG results...

..., are contralateral. * Author for correspondence (e-mail: [email protected] ) 11 08 1999 13 10 1999 © 1999 by Company of Biologists 1999 motor neurone neurosecretory neurone abdominal innervation locust Schistocerca gregaria Maps of the distribution of identified...

.... Intracellular recordings in fixed (upside-down) locusts also revealed co-activation of both flexor and extensor motor neurones with latencies of approximately 25 ms. This shows that the neuronal network underlying the startle movement is functional in a restrained preparation and can therefore be studied...

... Biology, 1 Baylor Plaza, Texas Medical Center, Houston, TX 77030, USA (e-mail: [email protected] ) 26 5 1996 27 7 1996 © The Company of Biologists Limited 1998 development degeneration hormone motor neurone muscle subunit actinomycin D cycloheximide ubiquitin...

... West Baltimore Street, Baltimore, MD 21201-1559, USA (e-mail: [email protected] ) 13 5 1998 14 7 1998 © The Company of Biologists Limited 1998 Aplysia californica FMRFamide motor neurone neuropeptide Na + current K + current seasonal variation Seasonal...

... or by the application of an appropriate external stimulus. * Present address: Im Nordfelde 5, D-31319 Sehnde, Germany † Author for correspondence (e-mail: [email protected] ) 16 3 1998 12 5 1998 © The Company of Biologists Limited 1998 motor neurone antennal muscle arousal...

...J. David Spafford; Nikita G. Grigoriev; Andrew N. Spencer ABSTRACT The Na + current of ‘swimming motor neurones’ in the hydromedusan Polyorchis penicillatus was tetrodotoxin-insensitive. The local anaesthetics lidocaine and procainamide caused partial, non use-dependent blockade of the Na + channel...

... reflex that rotates the coxa posteriorly and is similar to that occurring at the transition from the swing to the stance phase of walking. The motor neurones innervating the posterior rotator and adductor coxae muscles are excited, and those to the antagonistic anterior rotator muscle are inhibited...

...Daniel Cattaert; Alfonso Araque; Washington Buno; François Clarac ABSTRACT In crustaceans, some motor neurones (MNs) have been shown to be part of the central pattern generator in the stomatogastric system ( Harris-Warrick et al . 1992 ; Moulins, 1990 ), the swimmeret system ( Heitler, 1978...

..., 1980 ; Zill, 1985 ). Usually the same motor neurones are involved in both negative feedback (resistance) reflex responses and positive feedback reflexes. Reflex reversal involves a shift in the pattern of central inputs to a motor neurone, for example from excitation to inhibition. * Present...

...K. A. Wafford; D. B. Sattelle ABSTRACT Current-clamp experiments on an identified neurone have demonstrated the presence of L-glutamate receptors in the insect central nervous system. The cell body of the fast coxal depressor motor neurone (D f ) in the metathoracic ganglion of the cockroach...

...H. Reichert; C. H. F. Rowell ABSTRACT Simultaneous intracellular recordings were made in locusts from (a) flight motor neurones and (b) output interneurones of the flight oscillator. The insects were mounted with the head at the centre of rotation of an artificial horizon. During fictive flight...

...Peter Skorupski; Keith T. Sillar ABSTRACT We present electrophysiological evidence for the presence of central output synapses on crayfish walking leg motor neurones. The effect of these central outputs is that a motor neurone can exert tonic graded control over other motor neurones without...

... by severing the pedal commissure. Removal of the cerebral ganglia results in a decrease in swim frequency and regularity suggesting descending modulation of the CPGs. Two classes of pedal neurones display firing patterns in phase with swimming movements. One class, swim motor neurones, are further divided...

...Qin-Zhao Yang; Malcolm Burrows ABSTRACT Motor neurones to abdominal ventilatory muscles, with their axons in nerve 6 of the metathoracic ganglion of the locust, have been identified by intracellular recording and staining. Three muscles are innervated by the larger branches of this nerve: nerve 6a...

... to excite them; this will only occur when the hair is bent by the opposite wing. The hair sensillae project to the ventral association area of the mesothoracic ganglion, but the endings of the stridulatory motor neurones are all in dorsal or lateral neuropiles of the thoracic ganglia. Electrical stimulation...