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Title: Having difficulty understanding epsp's and action potentials... Post by: BiologyBimbo on Jan 31, 2015 What are some differences between epsp's and action potentials.
Title: Re: Having difficulty understanding epsp's and action potentials... Post by: Cookiemonsta on Feb 1, 2015 Postsynaptic potentials (PSPs) are depolarizations/hyperpolarizations that increase the likelihood that a cell will have an action potential (AP).
PSPs are fast, graded responses and their signal travels passively through the neuron's membrane and are therefore decremental (getting weaker as it gets farther from the site of generation). In other words, these are the inputs to neuron that could make the neuron fire. APs is what happens if enough PSPs sum up. This is the neuron firing. There is a massive but short reversal of the membrane potential. The signal travels actively down the axon (read about voltage-activated sodium and potassium channels), so the AP is not decremental and is an all-or-nothing response. Title: Re: Having difficulty understanding epsp's and action potentials... Post by: thebiologist on Feb 6, 2015 There was an action potential if EPSP's are gathered
There wasn't make an action potential only one EPSP |