Aspartate: Distinct Receptors on Aplysia Neurons

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Abstract
Aplysia neurons have specific aspartate receptors that are distinct from those to glutamate. In some cells, aspartate selectively increases the membrane permeability to chloride, giving rise to a hyperpolarization, while on other cells it increases the permeability to sodium, causing a depolarization. There are also specific receptors for L-glutamate which mediate sodium, chloride, or potassium conductance increases, and another class of receptors activated by both glutamate and aspartate.