Neurotransmitter packets reaching post-synaptic cell-membrane neuron receptors cause small voltage differences, positive {excitation} {hyperpolarization} or negative {inhibition} {depolarization}|. Sodium ions diffuse into cell, and potassium ions diffuse out, causing voltage change across cell membrane. Voltage change spreads to nearby cell membrane.
Depolarization increases glutamate binding to NMDA receptor, which activates CREB pathway to increase cyclic AMP, which increases CREB protein, which increases transcription of genes that make synapses larger and more efficient.
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Date Modified: 2022.0224