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Molecular neuroscience is a branch of neuroscience that observes concepts in molecular biology applied to the nervous systems of animals. The scope of this subject covers topics such as molecular neuroanatomy, mechanisms of molecular signaling in the nervous system, the effects of genetics and epigenetics on neuronal development, and the molecular basis for neuroplasticity and ...
Two molecular mechanisms for synaptic plasticity involve the NMDA and AMPA glutamate receptors. Opening of NMDA channels (which relates to the level of cellular depolarization) leads to a rise in post-synaptic Ca 2+ concentration and this has been linked to long-term potentiation, LTP (as well as to protein kinase activation); strong depolarization of the post-synaptic cell completely ...
Long-term potentiation (LTP) is a persistent increase in synaptic strength following high-frequency stimulation of a chemical synapse. Studies of LTP are often carried out in slices of the hippocampus, an important organ for learning and memory. In such studies, electrical recordings are made from cells and plotted in a graph such as this one.
2354 14282 Ensembl ENSG00000125740 ENSMUSG00000003545 UniProt P53539 P13346 RefSeq (mRNA) NM_001114171 NM_006732 NM_008036 NM_001347586 RefSeq (protein) NP_001107643 NP_006723 NP_001334515 NP_032062 Location (UCSC) Chr 19: 45.47 – 45.48 Mb Chr 7: 19.04 – 19.04 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Protein fosB, also known as FosB and G0/G1 switch regulatory protein 3 ...
One such protein pathway is the REST co-repressor complex pathway. There are also several non-coding RNAs that regulate neural function at the epigenetic level. These mechanisms, along with neural histone methylation , affect arrangement of synapses , neuroplasticity, and play a key role in learning and memory.
At the neuronal level, cells with higher levels of excitability (for example lower slow afterhyperpolarization [5]) are more likely to be recruited into a memory trace, and substantial evidence exists implicating the cellular transcription factor CREB (cyclic AMP responsive element-binding protein) in this process.
Most often, the threshold potential is a membrane potential value between –50 and –55 mV, [1] but can vary based upon several factors. A neuron 's resting membrane potential (–70 mV) can be altered to either increase or decrease likelihood of reaching threshold via sodium and potassium ions.
Neurotrophic factors also promote the initial growth and development of neurons in the central nervous system and peripheral nervous system, and they are capable of regrowing damaged neurons in test tubes and animal models. [1] [4] Some neurotrophic factors are also released by the target tissue in order to guide the growth of developing axons.