Psych 204- Intro to Brain and Cognition Review 1
Differences between a localizationist and anti- localizationist. Example would
be phrenology. Come up with examples, problems, and the legacies of this
Neuron doctrine- golgi-a web of things and all neurons were interconnected in
one giant link and cajal- discovered the synapse and neurons were just units
that processed information in the brain
What are the different parts of the neuron, what do they do, what occurs in the
synapse? Know about specific glial cells (where can you find them and what
do they do?)
Neurons with long axons can be a problem because transmitters have to travel
a really long way, so the myelin acts as an insulator to speed up the process
and allow for accuracy.
Depolarize the neuron to get excited, hyperpolarize the neuron to not fire it.
All or nothing- either a potential fires or it does not.
Nodes of Ranvier- interruptions in the myelination, the places where there is
not myelin. Why are they there? Signal gets weaker and weaker, so the nodes
of Ranvier refresh the neuron and charge the signal back up.
Temporal and Spatial summation- Exam