The ultimate effect of a signal from one neuron on the next neuron depends on the function of the synapse, which is based on the type of neurotransmitter released. Excitatory synapses send signals ...

But the negative emotional signals emanating from the activated amygdala, amplified by the excitatory neurotransmitter ... of serotonin or noradrenaline at synapses, thus increasing levels of ...

Microglia are a type of small macrophage-like glial cell in the central nervous system. Microglia can engage in phagocytosis, and are involved in immune responses within, as well as the ...