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Age-Dependent occurrence of an ascending axon on the omega neuron of the cricket, Teleogryllus oceanicus by Gordon Atkins; Gerald S. Pollack is a Neuroscience article available to read on EtoBox.

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The omega neurons (ONls) are a mirror-symmetrical pair of identified prothoracic auditory interneurons of crickets which have been previously described as intraganglionic. Using intracellular techniques we stained ONls of female Teleogryllus oceanicus and found that many ONls have axons which project anteriorly out of the prothoracic ganglion. The ascending axon arises contralateral to the soma at the most anteriolateral bend of the bowshaped process of an otherwise "archetypical" ON1 and travels up the neck connective in a ventral position just inside the connective tissue sheath. The occurrence of the ascending axon is age-dependent. Seventy-five percent of ONls stained in late nymphal stages and in young adults had an ascending axon while only 30% of ONls in older adults had an ascending axon. Evidence is presented to show that ONls having ascending axons are developmental variants of the "archetypical" ON1 and do not represent a separate neuron type. The two morphological types of ONls are not distinguishable on the basis of their responses to sound stimuli having carrier frequencies of 3.5-60 kHz. Although we know that the ascending axon conducts action potentials, its target

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Author

Gordon Atkins; Gerald S. Pollack

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley; Research Square (ISSN 0021-9967)

Published

1986

Language

EN

Field

Neuroscience (Life Sciences)