inhibitory postsynaptic potential

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inhibitory postsynaptic potential

[in′hib·ə·tȯr·ē pōst·sə′nap·tik pə′ten·chəl]
(neuroscience)
A transient, graded hyperpolarization of the postsynaptic membrane, mediated by a chemical neurotransmitter, in response to action potentials arriving at the endings of the presynaptic neurons.
References in periodicals archive ?
48,49) A large fraction of inhibitory synapses are also present on dendritic shafts, and their detection requires specific molecular markers.
Selective translocation of Ca2/calmodulin protein kinase IIalpha (CaMKIIalpha) to inhibitory synapses.
To keep the activity in the network stable, the researchers integrated inhibitory synapses into the learning process, which control the excitation in the network.
Scanziani further explained that the study shows that the inhibitory neurons were the master regulators that contact hundreds or thousands of cells and made sure that the inhibitory synapses at each of these contacts was matched to the different amounts of excitation that these cells were receiving.
The study found that transplanted iPSCs initially formed neurons producing GABA, the chief inhibitory neurotransmitter in the mammalian central nervous system, which plays a critical role in regulating neuronal excitability and acts at inhibitory synapses in the brain.
The primary properties of excitatory and inhibitory synapses undergo modification beyond the end of the second postnatal week.
From the neurophylogenetic perspectives, the ultrastructural characteristics of the central nervous tissue of the Onychophora show important evolutionary acquirements, such as the presence of both excitatory and inhibitory synapses, indicating functional synaptic transmission, and the appearance of mature glial cells.
Topics include AMPA receptor trafficking, long-term plasticity at inhibitory synapses, proteomics of the PSD, phosphorylation of site-specific antibodies, protein palmitoylation by the DHHC protein family, antibody labeling and biotinylation approaches to study neurotransmitter receptors, visualization of AMPAR trafficking and surface expression, neurotransmitter dynamics, receptors dynamics and functional tagging, RNAi and applications in neurobiology, transfecting and transducing neurons, expression of recombinant proteins in rat brains using Sindbus virus, Lentivirus-based genetic manipulation, AMPA receptor phosphorylation in synaptic plasticity, and genomic and post-genomic tools for studying synapse biology.
The increase in the level of cell polarization can be passive, due to reduced excitatory influence, and active, due to the activation of inhibitory synapses and the development of inhibitory postsynaptic potential (IPSP), according to contemporary conceptions.
On the other side, phenytoin may also block the release in inhibitory synapses, in such a manner that the final result will be the sum of its effects on these systems.
Presynaptic protein complexin I is a marker of inhibitory synapses, and complexin II is a marker of excitatory synapses.
We have both excitatory and inhibitory synapses," Dr.