Interaction between afferent neurones in a crab muscle receptor organ.
Two of the three mechanoreceptor neurones which innervate the crab thoracic-coxal muscle receptor organ are non-spiking. The third, the small diameter P neurone, employs graded amplitude receptor potentials with either spikes or graded amplitude active membrane responses superimposed. An excitatory synaptic connection between one of the larger non-spiking afferents and the P neurone has now been detected within the thoracic ganglion. This novel connection between two afferents innervating the same receptor strand effectively extends the dynamic sensitivity range of the P neurone.
Wildman
M H
MH
Department of Zoology, University of the Witwatersrand, Republic of South Africa.
Cannone
A J
AJ
D000344:Afferent Pathways / Q000502:physiology*; D000818:Animals; D003386:Brachyura; D005071:Evoked Potentials; D008564:Membrane Potentials; D009046:Motor Neurons / Q000502:physiology; D009132:Muscles / Q000294:innervation*; D009474:Neurons / Q000502:physiology*; D009475:Neurons, Afferent / Q000502:physiology; D011984:Sensory Receptor Cells / Q000502:physiology*; D013569:Synapses / Q000502:physiology