It sends an impulse back to the cell body of the neuron
Integration
Integration
When neurotransmitters communicate an inhibitory message to the postsynaptic neuron:
Excitatory and inhibitory messages. Excitatory messages increase the likelihood of a postsynaptic neuron firing an action potential, while inhibitory messages decrease this likelihood.
The neuron adds up all the excitatory and inhibitory inputs and fires when they reach its threshold of excitation.
The type of neurotransmitter.
Synaptic integration in a neuron involves the summation of excitatory and inhibitory signals from multiple synapses. If the overall excitatory input surpasses the inhibitory input, the neuron is more likely to generate an action potential and propagate a nerve impulse. Conversely, if the inhibitory input dominates, the neuron is less likely to generate an action potential.
Every time neurotransmitter is released from the presynaptic neuron it generates an excitatory post synaptic potential(EPSP) in the postsynaptic neuron. When the EPSP is greater than the threshold for excitation an action potential is generated.
The determination of whether a synapse is excitatory or inhibitory is based on the type of neurotransmitter released at the synapse. Excitatory synapses release neurotransmitters that promote the firing of the receiving neuron, while inhibitory synapses release neurotransmitters that prevent the firing of the receiving neuron.
excitatory message
Dopamine acts on the postsynaptic membrane by binding to dopamine receptors, which can lead to changes in the postsynaptic neuron's electrical activity and neurotransmitter release. This can modulate various functions in the brain related to reward, motivation, movement, and emotion.
A.