Dictionary of molecular biology. 2004.
Postsynaptic potential — Postsynaptic potentials are changes in the membrane potential of the postsynaptic terminal of a chemical synapse. Postsynaptic potentials are graded potentials, and should not be confused with action potentials although their function is to… … Wikipedia
postsynaptic potential — In a synapse, a change in the resting potential of a postsynaptic cell following stimulation of the presynaptic cell. For example, in a cholinergic synapse, the release of acetylcholine from the presynaptic cell causes channels to open in the… … Dictionary of molecular biology
postsynaptic membrane — the area of plasma membrane of a postsynaptic cell, either a muscle fiber or a neuron, that is within the synapse and has areas especially adapted for receiving neurotransmitters … Medical dictionary
Postsynaptic density — The postsynaptic density (PSD) is a cytoskeleton specialization at neuronal synapses that was originally identified as an electron dense region at the membrane of a postsynaptic neuron, as viewed by electron microscopy. PSDs are usually composed… … Wikipedia
postsynaptic — adjective Date: 1909 1. occurring after synapsis < a postsynaptic chromosome > 2. of, occurring in, or being a nerve cell by which a wave of excitation is conveyed away from a synapse < a postsynaptic membrane > • postsynaptically adverb … New Collegiate Dictionary
postsynaptic potential — ▪ biology a temporary change in the electric polarization of the membrane of a nerve cell ( neuron). The result of chemical transmission of a nerve impulse at the synapse (neuronal junction), the postsynaptic potential can lead to the… … Universalium
postsynaptic — Pertaining to the area on the distal side of a synaptic cleft. * * * post·syn·ap·tic .pōst sə nap tik adj 1) occurring after synapsis <a postsynaptic chromosome> 2) relating to, occurring in, or being part of a nerve cell by which a wave of … Medical dictionary
Excitatory postsynaptic potential — In neuroscience, an excitatory postsynaptic potential (EPSP) is a temporary depolarization of postsynaptic membrane potential caused by the flow of positively charged ions into the postsynaptic cell. They are the opposite of inhibitory… … Wikipedia
presynaptic cell — In a chemical synapse, the cell that releases neurotransmitter that will stimulate the postsynaptic cell In an electrically synapsed system, the cell that has the first action potential, but since synapses are rectifying, one of the two cells… … Dictionary of molecular biology
Photoreceptor cell — This article is about cellular photoreceptors. For other types of photoreceptors, see Photoreceptor (disambiguation). Rods and cones redirects here. For the Blue Man Group song, see Rods and Cones (song). Neuron: Photoreceptor Cell … Wikipedia
