Neurotransmission – IB Psychology Study Notes

Comprehensive IB Psychology study notes on Neurotransmission. Covers key theories, research studies, and evaluation points for the 2027 syllabus.

Mark Scheme SECTION A MARK SCHEME 4 marks Must Include: • Electrochemical process definition • Axon terminal → synaptic cleft → post-synaptic receptor • Excitatory depolarization vs inhibitory hyperpolarization • Specific neurotransmitter e.g. serotonin, dopamine • Neurotransmitter function NOT "serotonin is inhibitory" • Behaviour link: reuptake, SSRIs, or hypothesis Link Formula: "When neurotransmitter is available/unavailable, post-synaptic effect occurs, leading to behaviour change." Watch O...