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Provigil is a medication which helps to fight sleepiness in excess.
There are two families of receptors: ionotropic and metabotropic receptors.
Ionotropic receptors are a combination of a receptor and an ion channel.
The Hodgkin–Huxley model of an action potential in the squid giant axon has been the basis for much of the current understanding of the ionic bases of action potentials.
Briefly, the model states that the generation of an action potential is determined by two ions: Na and K .
Cellular neuroscience is the study of neurons at a cellular level.
This includes morphology and physiological properties of single neurons.
Thus, the fundamental difference between a neuron and a nonneuronal cell is a matter of degree.Some neurons such as photoreceptor cells, for example, do not have myelinated axons that conduct action potentials.Other unipolar neurons found in invertebrates do not even have distinguishing processes such as dendrites.Several techniques such as intracellular recording, patch-clamp, and voltage-clamp technique, pharmacology, confocal imaging, molecular biology, two photon laser scanning microscopy and Ca2 imaging have been used to study activity at the cellular level.Cellular neuroscience examines the various types of neurons, the functions of different neurons, the influence of neurons upon each other, how neurons work together.