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What is the effect of an IPSP on the postsynaptic cell? The cell is less likely...

What is the effect of an IPSP on the postsynaptic cell? The cell is less likely to generate an action potential. The cell is more likely to generate an action potential The cell releases more neurotransmitter. There is upregulation of enzymes that destroy the neurotransmitter.

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The temporary depolarization of postsynaptic membrane potential, caused by the flow of positively charged ions into the postsynaptic cell, is a result of opening ligand-gated ion channels. These are the opposite of inhibitory postsynaptic potentials (IPSPs), which usually result from the flow of negative ions into the cell or positive ions out of the cell.The flow of ions that causes an EPSP is an excitatory postsynaptic current (EPSC).

EPSPs, like IPSPs, are graded (i.e. they have an additive effect). When multiple EPSPs occur on a single patch of postsynaptic membrane, their combined effect is the sum of the individual EPSPs. Larger EPSPs result in greater membrane depolarization and thus increase the likelihood that the postsynaptic cell reaches the threshold for firing an action potential.

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