Presynaptic Ionotropic Receptors Controlling and Modulating the Rules for Spike Timing-Dependent Plasticity

• Published in: Journal of neural transplantation & plasticity 2011-01, Vol.2011 (2011), p.372-382
• Main Authors: Verhoog, Matthijs B., Mansvelder, Huibert D.
• Format: Article
• Language: English
• Subjects: Action Potentials - physiology; Animals; Humans; Methyl aspartate; Neuronal Plasticity - physiology; Neurons; Physiological aspects; Presynaptic Terminals - physiology; Receptors, Ionotropic Glutamate - physiology; Review; Synapses; Synaptic Transmission - physiology
• ISSN: 0792-8483; 2090-5904; 1687-5443
• DOI: 10.1155/2011/870763

Throughout life, activity-dependent changes in neuronal connection strength enable the brain to refine neural circuits and learn based on experience. In line with predictions made by Hebb, synapse strength can be modified depending on the millisecond timing of action potential firing (STDP). The sign of synaptic plasticity depends on the spike order of presynaptic and postsynaptic neurons. Ionotropic neurotransmitter receptors, such as NMDA receptors and nicotinic acetylcholine receptors, are intimately involved in setting the rules for synaptic strengthening and weakening. In addition, timing rules for STDP within synapses are not fixed. They can be altered by activation of ionotropic receptors located at, or close to, synapses. Here, we will highlight studies that uncovered how network actions control and modulate timing rules for STDP by activating presynaptic ionotropic receptors. Furthermore, we will discuss how interaction between different types of ionotropic receptors may create “timing” windows during which particular timing rules lead to synaptic changes.