NBE-E4210 week 3 Neurons and communication

This week’s lecture was about synaptic transmission. First, we talked about action potentials and how they are produced. This was familiar from the earlier lectures and from high school biology, therefore it was easy to follow. Then we were taught about the chemical synapse and how action potential in the presynaptic neuron initiates the release of neurotransmitters from vesicles to the synaptic cleft. The neurotransmitters travel to the receptors of the postsynaptic neuron they trigger a response depending on the neurotransmitter.


This was hard to understand because the chemical synaptic transmission was very briefly mentioned in high school but here we studied it further in detail.  For example, we learned that different neurotransmitters are in the axon and they are synthesized in different locations and they are released in different circumstances. These concepts are not hard to understand but there is a lot to memorize.


Regarding the lecture of the week I learned more about information transfer between neurons. The complexity of chemical neuron to neuron communication in the steps required for it is astounding. In response to action potential the membrane of axon in pre-synaptic neuron fuses with a vesicle inside filled with neurotransimtters to for it to emit them to further the signal to the post-synaptic neuron through the synaptic cleft. This seems to be close to remote communication between antennas, although it is done with ions instead of electromagnetic signals.