Thalamic Neuron Problemset IV: Ih Inhibition, Action Potentials, Oscillation, and Synaptic, Study notes of Introduction to Sociology

Download Thalamic Neuron Problemset IV: Ih Inhibition, Action Potentials, Oscillation, and Synaptic and more Study notes Introduction to Sociology in PDF only on Docsity! BIPN 140 Problemset IV 1. Consider a thalamic neuron at rest (membrane potential -70 mV). At this potential Ih is partially activated. What happens if you apply Cesium which blocks the conductance mediating Ih? 2. Discuss the differences between an action potential mediated by sodium conductance and an action potential mediated by T-type calcium conductance? 3. During slow oscillation of a thalamic neuron (e.g. sleep) which two factors contribute to the re-hyperpolarization of the membrane potential? 4. What do you call a sequence of three to six action potentials at high frequency? 5. Draw the activation curve of Ih. 6. What is the relation between Ca and neurotransmitter release? 7. Define “Quantal Release”. Explain how you can infer the occurrence of quantal release without any knowledge about the presynaptic terminal. How does quantal release relate to the presynaptic mechanisms for neurotransmitter release? 8. Where and when is calcium necessary fro synaptic transmission? 9. Is Calcium necessary for action potential propagation? 10. Can you elicit neurotransmitter release in presence of TTX? If yes, how? 11. Briefly describe the two main types of synapses in the CNS. 12. Describe the sequence of events beginning with an action potential reaching the axon terminal and ending with the response in the postsynaptic cell at an excitatory chemical synapse.