Vocabulary and Notation
We begin by introducing some of the vocabulary used throughout this book. A human brain consists of approximately 100 billion neurons (nerve cells), and perhaps an equal number of glia or glial cells (auxiliary cells) . A neuron consists of a cell body or soma, and branching projections, the dendrites (input units) and the axon (output unit). Figure 1.1 shows a caricature. For a depiction of real cells in the hippocampus, a brain structure that is central in memory formation and spatial navigation, see Fig. 1.2.
KeywordsNMDA Receptor Sodium Channel Potassium Channel GABAA Receptor Extracellular Fluid
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