The serotonergic system in vertebrates and invertebrates has been a focus for over 50 years
and will likely continue in the future. Recently, genomic analysis and discovery of alternative …

Publisher Summary The chapter summarizes the available information supporting the
hypothesis that 5-HT is the natural transmitter of synaptic excitation to central neurons of …

Invertebrate receptors for the neurotransmitter serotonin (5-HT) have been identified in
numerous species from diverse phyla, including Arthropoda, Mollusca, Nematoda and …

Over the last decade, knowledge of invertebrate serotonin receptors has expanded greatly.
The first 5-HT receptor from Drosophila was cloned 10 years ago, and subsequently, 11 …

Serotonergic neurons are present in all phyla that possess nervous systems. In most of
these phyla, serotonin modulates important behaviours, including feeding, sexual and …

The differential action of neuromodulators on synapses of various efficacy provides
additional fine tuning of synaptic regulation beyond frequency induced plasticity. We used …

The biogenic amine serotonin (5-hydroxytryptamine, 5-HT) plays a key role in regulating and
modulating various physiological and behavioral processes in both protostomes and …

Abstract Serotonin (5‐hydroxytryptamine) acts as a widespread neuromodulator in the
nervous system of vertebrates and invertebrates. In insects, it promotes feeding, enhances …

The model synaptic preparation of the crayfish opener neuromuscular junction is known to
be responsive to exogenous application of 5-HT. The primary effect of 5-HT is an …

Serotoninergic neurons are integral parts of central and/or peripheral nervous networks in
diverse forms of invertebrates and vertebrates (P arent 1981a, b), suggesting that these …