What is inhibitory postsynaptic potential?
Inhibitory Postsynaptic potential (IPSP) is a signal sent from the synapse of one neuron or nerve cell for another dendrites. Inhibitory postsynaptic potential changes the charge of the neuron to be negatively charged. As a result, the neuron is less likely to send a signal to other cells.
When the neuron is at rest or is not affected by any signals, it has a negative electric charge. Inhibitory postsynaptic potential hyperpolarized neuron, which makes its charge even more negative or further from scratch. Excitation postsynaptic potential depolarizes neuron, which increases its overall charge more positive or closer to zero.
changes in the electric charge of neuron are caused when neurotransmitters, chemicals that use nerve cells for signaling, released from nearby cells and bind to neuron. These neurotransmitters cause the opening of the gate ion channels, allowing the flow of electrically charged molecules in or out of the cell. Postsynaptick inhyibitorsThe potential is caused by either positively charged ions leaving the cell or negatively charged ions entering it.
neuron is shaped as a tree, with a cell body above, from which dendrites reach like branches on a tree. On the other side of the neuron, a long trunk or axon expands towards another neuron. Axon ends in axon terminals or synapses that broadcast chemical signals through a space called synaptic cleft. These chemical signals are associated with dendrites of other neurons and cause excitation or inhibitory postsynaptic potentials.
The only neuron can receive many signals from other neurons, some excitation and some inhibitory. These signals are adding spatially and temporarily to Axon Hillock, a small hill at the beginning of the axon. The signal must be traveling to reach the Axon hill, the less effect it will have. Also, the excitation or inhibitory postsynaptic potentialIt lasts, the greater the effect will have when it reaches a hill of axons.
If there is enough excitative postsynaptic potentials to make the neuron much more positively charged, it will fire action potential. The action potential is an electrical signal sent by Axon neuron. It causes the synapses at the end of the axon to release neurotransmitters that send signals to other neurons. However, too much inhibitory postsynaptic potentials can cancel the effect of excitation potentials and prevent action potential.