Intro to synaptic potentials and neural networks Flashcards
What is the length of a typical action potential
2-5ms
Describe the process of an excitatory synaptic potential
Presynaptic neuron gas vesicle with neurotransmitter
AP in presynaptic neurone causes release of neurotransmitter (delay due to diffusion of neurotransmitter across synapse)
Neurotransmitter binds to itscognate receptors which causes voltage gated ion channels to open (can move Na+/K+ in or out- depolarisation lets Na+ in)
Depolarisation
Neurotransmitter molecules unbind and diffuse away/glial cells clean up
Decay of evoked synaptic potential
What is an inhibitory synaptic potential
The same as an excitatory except the neurotransmitters cause hyperpolarisation
How long does an inhibitory synaptic potential last
10-500ms