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Fifty years of a command neuron: the neurobiology of escape behavior in the crayfish
Fifty years ago C.A.G. Wiersma established that the giant axons of the crayfish nerve cord drive tail-flip escape responses. The circuitry that includes these giant neurons has now become one of theExpand
The locust jump
  • W. J. Heitler
  • Materials Science, Biology
  • Journal of comparative physiology
  • 1 March 1974
SummaryThe locust jumps by a rapid extension of its metathoracic tibiae. The comparatively slow rate of rise of tension of the extensor tibia muscle means that if it is to shorten rapidly, it mustExpand
Electrical properties of insect neurones with spiking and non-spiking somata: normal, axotomized, and colchicine-treated neurones.
r. The paired motorneurones in the metathoracic ganglion of the locust have non-spiking somata whereas the dorsal unpaired media (DUM) neurones have spiking somata. We have studied the electricalExpand
The locust jump. I. The motor programme.
A motor programme is described for defensive kicking in the locust which is also probably the programme for jumping. The method of analysis has been to make intracellular recordings from the somataExpand
Triggering of locust jump by multimodal inhibitory interneurons.
1. The locust jump is triggered by a sudden inhibition of activity in hindleg flexor tibiae motoneurons following cocontraction of the hindleg flexor and extensor tibiae muscles. The main result ofExpand
Non-Spiking Stretch-Receptors in the Crayfish Swimmeret System
1. 1. Two neurones have been encountered with the properties of non-spiking stretch-receptors on both sides of each swimmeret-bearing segment of the crayfish Pacifastacus leniusculus . 2. 2. EachExpand
The Locust Jump: III. Structural Specializations of the Metathoracic Tibiae
1. The flexor and extensor tibiae muscles of the mesothoracic leg have a constant lever ratio of about 2:1 throughout joint rotation. 2. The mesothoracic tibiae can only flex to 25° about the femora,Expand
DataView: A Tutorial Tool for Data Analysis. Template-based Spike Sorting and Frequency Analysis.
  • W. J. Heitler
  • Computer Science, Medicine
  • Journal of undergraduate neuroscience education…
  • 15 October 2007
DataView is a Windows program for viewing and analyzing digital data derived from analog signals using A/D acquisition systems. Expand
Coupled motoneurones are part of the crayfish swimmeret central oscillator
SWIMMERETS in the crayfish are the paired ventral abdominal appendages which beat in a metachronal rhythm during behaviours such as swimming and burrow ventilation. Each swimmeret is driven byExpand
The locust jump. II. Neural circuits of the motor programme.
1. Neural circuits which co-ordinate the motorneurones of the meta-thoracic tibiae of the locust in jumping and kicking have been investigated. 2. The fast extensor motorneurone is reflexly excitedExpand