The graph below shows changes in the membrane potential of a postsynaptic neuron over time following the stimulation of different presynaptic inputs.
With reference to Curves A, B, and C, explain how the processes of excitation, inhibition, and summation determine whether an action potential is generated in the postsynaptic neuron.
Practise Edexcel A Level Psychology Content with exam-style questions for A Level Psychology. 1,059 questions covering Issues around drug taking, Biological explanations of drug addiction, Learning explanations of drug addiction, Treatments for drug addiction, Anti-drug campaign and strategies, Individual differences, and Developmental psychology, matched to the Edexcel A Level Psychology (9PS0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
