4 resultados
Potential changes in superior cervical ganglion cells evoked by 5-HT or the nicotinic agonist, dimethyl-phenyl piperazinium (DMPP), were recorded using the sucrose-gap method and a number of putative 5-HT antagonists tested for potency and selectivity. Selective blockade of 5-HT responses was
Interneuronal connexions have been studied within the cerebral ganglion of Aplysia californica. Excitatory monosynaptic connexions between two groups of cells located on the dorsal surface of the ganglion near the cerebropleural connectives were analyzed in detail. The monosynapticity of these
1. Two symmetrical giant neurones located in the cerebral ganglion of Aplysia californica contain 4-6 p-mole 5-hydroxytryptamine (5-HT) and are able to synthesize it (Weinreich, McCaman, McCaman & Vaughn, 1973; Eisenstadt, Goldman, Kandel, Koike, Koester & Schwartz, 1973). Stimulation of each of
1. Large neurons in the pedal ganglia of Aplysia californica were examined for their potential to modulate motoneuron-evoked contractions in foot and body-wall muscle. These neurons lie near the medial border of each pedal ganglion and have peripheral axons but no detectable motor effect. 2. Neurons