TSEEM CEEB NTAWM METAPLASTICITY Vim cov synapses no tau ntxiv dag zog, lawv tau dhau los ua ntau dua los tsav postsynaptic firing ntawm kev ua haujlwm muaj peev xwm thiab muaj zog dua nrog cov haujlwm neural tom ntej. Cov synapses no thaum kawg yuav ncav cuag lub ntsiab lus ntawm qhov saturation yog tias lawv lub peev xwm ua kom muaj zog tau raug tso tseg tsis txheeb xyuas.
Dab tsi yog metaplasticity hauv neuroscience?
Metaplasticity yog hais txog rau cov kev hloov pauv ntawm neural uas tau tshwm sim los ntawm kev ua haujlwm ntawm ib lub sijhawm thiab qhov ntawd nyob twj ywm thiab cuam tshuam tom qab induced LTP lossis LTD. Kev ua haujlwm ntawm NMDA (N-methyl-D-aspartate) receptors tuaj yeem ua rau txo qis hauv LTP induction thiab txhim kho LTD.
Puas yog synapses uas muaj zog tuaj yeem ntxhov siab?
Kev ywj pheej ntawm ob txoj hauv kev afferent tau qhia tias cov neeg nyob sib ze tuaj yeem ua rau nws tus kheej muaj zog lossis nyuaj siab . Cov cuab yeej no ntawm 'cov tswv yim tshwj xeeb, yog ib qho tseem ceeb ntawm Hebbian LTP thiab LTD 4, 23 (saib daim duab 1).
YYuav ua li cas yog synaptic potentiation?
Synaptic Transmission
Long-term potentiation (LTP) yog hais txog nce mus ntev hauv EPSP tom qab tetanic stimulation hauv presynaptic neurons.
Yuav ua li cas yog lub xeev synaptic?
Synaptic hais: a mechanism ntawm kev hais kom muaj zog synaptic. Lub luag haujlwm tseem ceeb ntawm synaptic plasticity yog tso cai rau cov synapse ua haujlwm dhau qhov loj dynamicntau. Ob tus qauv ua tau tuaj yeem piav qhia tus cwj pwm ntawm synapses hla qhov no.
Metaplasticity
