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Neurphysiology
practice for EEG registry
| Question | Answer |
|---|---|
| Action potentials develop in the nerve and muscle fibers in a response to | depolarization |
| What electrophysiological events are thought to generate EEG? | both excitatory postsynaptic potentials (EPSPs) and inhibitory postsynaptic potentials (IPSPs) |
| What is the approximate resting membrane potential of a neuron? | -70 mV |
| When a nerve is stimulated, the electrical potential changes inside the nerve changes from | Negative to positive |
| Cells in which an action potential can be triggered are considered | excitable |
| A neuron depolarizes only when excitatory influences reach a | threshold |
| The chemical structure of a neuron is dependent upon what three ions? | sodium (Na), potassium (K) and chloride (Cl) |
| What ion is found predominantly in extracellular fluid during the resting state of a neuron? | Sodium (Na) |
| What ion is found predominantly in the intracellular fluid during the resting state of a neuron | potassium (k) |