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Fundamentals of Neuronal Function: Structure and Signal Transmission

Fundamentals Of Neuronal Function: Structure And Signal Transmission

Explore the foundational knowledge of neurons in the context of psychology and neuroscience. This content is designed to enhance understanding of brain functions, neuron structure, and neural communication, essential for students...

Questions: 25 | Attempts: 10 | Last updated: Aug 4, 2025

Sample Question 1
What are IPSPs?

Inhibitory Post synaptic potentials--> hyperpolerizations-returns to its steady state membrane potential

Excitatory Post synaptic potentials--> depolarizations-increases the membrane potential.

Axon potential in the synaptic cleft leading to a decrease in membrane potential.

Synaptic transmission-induced membrane potential changes.

Sample Question 2
What are EPSPs?

Excitatory postsynaptic potentials--> Depolarization-up to a point it will just return to its resting membrain potential, but if you depolarize it past threshold, and action potential will fire

Glutamate receptors that decrease neuronal excitability

Inhibitory postsynaptic potentials resulting in hyperpolarization

Signals that prevent action potentials from firing

Sample Question 3
Describe the main structure of an action potential (spike).

-rapid depolarization and repolarization-occurs at threshold potential (55mV)-All or none --> constant amplitude (100mV above resting), -->Constant timecourse (1ms)-Refractory period (5 ms)

- variable amplitude and timecourse

- gradual hyperpolarization and depolarization

- occurs at resting potential (0mV) only

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