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Article: Presynaptic target of Ca2+ action on neuropeptide and acetylcholine release in Aplysia californica.

Full Text (publisher's website) ; Article Metadata ; Article Data (extracted)
Ohnuma K; Whim MD; Fetter RD; Kaczmarek LK; Zucker RS
J. Physiol. (Lond.), 2001


Table 2

Differences in Ca2+ action on cholinergic and peptidergic secretion

Cholinergic Peptidergic
Ca2+ stoichiometry 3.1 ± 0.5 (6) 2.2 ± 0.6(8)
Maximum rate of PSC change (nA s−1) [Ca2+]i= 10μm 3.6 ± 1.9(6) 0.047 ± 0.015(8)
Action potential 48 ± 21(8) 0.035 ± 0.014(10)
Minimum [Ca2+]i (μm) eliciting release with transmission probability > 0.5 10 5
[Ca2+]i (μm) elicited by an action potential at release site 23 8.8

  • Number of measurements is shown in parentheses. Upper two rows came from flash photolysis experiments. The bottom row was calculated based on upper three rows using eqn (4).


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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source
Spinal cord ventral horn motor neuron alpha spike amplitude 48.0 ± 21.0 (8) -- Data Table