Biopsychology: Synaptic Transmission

Question 1

Explain the process of synaptic transmission

Answer 1

• Action potentials reach the presynaptic terminal
• Action potentials trigger release of neurotransmitters
• Neurotransmitters cross the synaptic cleft from vesicles
• Neurotransmitters combine with receptors on the postsynaptic membrane
• Stimulation of postsynaptic receptors by neurotransmitters result in either excitation
(depolarisation) or inhibition (hyperpolarisation) of the postsynaptic membrane.