What is a miniature EPSP? The movement of K+ across the presynaptic membrane. The diffusion of a neurotransmitter across the synapse. The postsynaptic response to the release of contents from a Quantum. A depolarization caused by the release of a neurotransmitter from several synaptic vesicles.
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Imagine that neurotransmitter binding results in a depolarization of the postsynaptic cell. This is known as an EPSP. IPSP. EPSP or IPSP depending on the type of neuron involved. EPSP or IPSP depending on type of neurotransmitter involved.
Adi S.
What is the main difference between EPSP and IPSP? One happens in presynaptic neurons and the other one happens in postsynaptic neurons. One is triggered by the release of neurotransmitters and the other one is not. EPSP is an action potential and IPSP is a graded potential. EPSP depolarizes postsynaptic neurons and IPSP hyperpolarizes postsynaptic neurons.
Post-synaptic potentials are either excitatory (EPSP) or inhibitory (IPSP). These excitatory or inhibitory effects are determined by the actions of neurotransmitters at post-synaptic receptors. To fully answer this question, we need to consider the changes to the post-synaptic neuron brought about by the actions of the particular neurotransmitter(s). This includes the roles of transmitter-dependent ion channels and the type of receptor (ionotropic or metabotropic).
Sri K.
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