... of the exopodite reductor motor neurone. The inhibitory effect of serotonin on the motor neurone was dose-dependent and its spike discharge was completely suppressed for long periods by 1 mmol l -1 serotonin perfusion. Nonspiking local interneurones in the terminal abdominal ganglion showed either a membrane...

... (e-mail: labhart@zool.unizh.ch ) 19 4 2001 © The Company of Biologists Limited 2001 2001 polarization vision photoreceptor interneurone model neurone spatial integration review cricket Gryllus campestris. Skylight polarization offers insects a useful reference...

...Hitoshi Aonuma; Philip L. Newland; Toshiki Nagayama ABSTRACT Intersegmental interneurones are crucial for the appropriate coordination of the activity of local circuits located in different body segments. We have analysed the synaptic inputs to ascending intersegmental interneurones from...

... campestris , polarized light information conveyed by the dorsal rim ommatidia was found to be processed by polarization-opponent interneurones (POL-neurones). In this study, a field-proof opto-electronic model of a POL-neurone was constructed that implements the physiological properties of cricket POL...

... of interneurones within the metathoracic ganglion complex were performed simultaneously with recordings of leg movement. Five interneurones were identified in the metathoracic ganglion complex. The branching patterns of these interneurones were typical of stridulatory interneurones. Three of these neurones had...

...N. I. Syed; I. Roger; R. L. Ridgway; L. G. Bauce; K. Lukowiak; A. G. M. Bulloch ABSTRACT We describe three interneurones and their follower cells in the central ganglionic ring of Helisoma trivolvis . The largest neurone on the dorsal surface of the left pedal ganglion is shown...

...Ralph A. Dicaprio ABSTRACT The central pattern generator controlling ventilation in the crab can generate two distinct motor programmes, which determine the direction of water flow during irrigation of the gills. An interneurone has been identified that depolarizes when the ventilatory motor output...

... sensilla of the paired tympana, the axons of which project to the first abdominal ganglion). Interneurones have been found in the metathoracic and first abdominal neuromeres which are sensitive to high-frequency sound and which elicit head and abdominal rotation in opposite directions, as required...

... reported that abdominal pumping ceases for the first seconds of flight. Our data indicate that this phenomenon is not due to inhibition of the respiratory system, since most interneurones and some motoneurones maintain a respiratory rhythm during the onset of flight activity. Likely explanations...

...J. M. Ramirez; K. G. Pearson ABSTRACT Interneurones in the respiratory rhythm generator of the locust were identified by means of intracellular recording and staining techniques. A description is made of the properties and structures of nine intersegmental neurones which reset the respiratory...

...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...

.... Nevertheless, in several arthropod species, non-spiking interneurones can participate in the production of a centrally generated motor pattern ( Mendelson, 1971 ; Pearson & Fourtner, 1975 ; Heitler & Pearson, 1980 ; Simmers & Bush, 1980 ; Takahata, Nagayama & Hisada, 1981 ; Paul & Mulloney...

... or downswing are pedal-pedal inter neurones. Each swim interneurone provides axon branches in both pedal ganglia and the axon runs in the pedal commissure. Interneurone axon branches occur in the lateral neuropile of each pedal ganglion, in the region of motor neurone branching. The swim interneurones...

... variability may be selectively eliminated through environmental factors as well as intra-and interspecific biological interactions. 14 8 1984 © 1985 by Company of Biologists 1985 DCMD interneurone structural variability In the locusts, Schistocerca gregaria and Locusta...

...I. D. Harrow; D. B. Sattelle ABSTRACT lonophoresis of acetylcholine (ACh) onto the cell body membrane of an identified giant interneurone (GI2) in the central nervous system of the cockroach Periplaneta americana induced a depolarizing response at resting potential which was attributed...

...Gerd Bicker; Keir G. Pearson ABSTRACT When the tarsi are not in contact with the ground, brief wind stimuli applied to the wind sensitive hairs on the head elicit flight in the locust ( Weis-Fogh, 1949 ; Camhi, 1969 ). The descending interneurones mediating this reaction have not been identified...

... to spike in response to movements of the optomotor stimulus, but subthreshold oscillations of 5–10 mV, in phase with the response of the identified optomotor interneurone DI, were observed. Three motoneurones, the second pleuroaxillary, the subalar and the dorsal longitudinal to the more medial, ventral...