Yog li, ob lub peev xwm ua tau tsim ib qho peev txheej uas yog kwv yees li 2 mV hauv amplitude. Peb qhov peev xwm ua tau zoo hauv kev ua tiav sai yuav ua rau muaj peev xwm suav nrog txog 3 mV. Hauv txoj ntsiab cai, 30 qhov peev xwm ua tau sai sai yuav ua rau muaj peev xwm ntawm 30 mV thiab yooj yim tsav lub cell mus rau qhov pib.
Yuav ua li cas muaj peev xwm ua tau hauv cov paj hlwb Summate?
Temporal summation tshwm sim thaum muaj qhov muaj peev xwm ua tau zoo hauv presynaptic neuron elicits postsynaptic peev xwm uas sib koom ua ke. … Qhov no tso cai rau cov membrane muaj peev xwm ncav cuag qhov pib ua kom muaj peev xwm ua tau.
Qhov twg ua qhov muaj peev xwm Summate?
Txawm li cas los xij, lub tshuab hluav taws xob muaj peev xwm tuaj yeem pib ua qhov muaj peev xwm ua haujlwm hauv qhov kev hnov mob neuron axon, thiab postsynaptic muaj peev xwm tuaj yeem pib muaj peev xwm ua haujlwm hauv axon ntawm lwm cov neurons. Qib qhov muaj peev xwm sib sau ua ke ntawm qhov chaw tshwj xeeb ntawm qhov pib ntawm axon txhawm rau pib qhov peev xwm ua, uas yog ntu pib.
Puas muaj peev xwm ua tiav tau?
Lub sijhawm tsis muaj tseeb thiab cov txheeb ze refractory yog qhov tseem ceeb ntawm qhov ua tau zoo. Cov peev txheej tau qhab nia tuaj yeem suav nrog lub sijhawm (lub sijhawm luv luv) thiab hla qhov chaw (spatial summation). Summation tsis tuaj yeem ua tau nrog qhov muaj peev xwm ua tau (vim tag nrho-lossis-tsis muaj xwm txheej, thiab muaj lub sijhawm refractory).
Yuav ua li cas muaj peev xwm suav ua ke?
Spatial summation yog cov txiaj ntsig ntawm kev ua kom muaj peev xwm ua haujlwm hauv cov neuron los ntawm ib lossis ntau lub neurons presynaptic. Qhov no tshwm sim thaum muaj ntau tshaj ib qho kev muaj peev xwm postsynaptic (EPSP) tshwm sim ib txhij thiab ib feem ntawm cov neurone.
