Learning Flashcards
difficulties in learning people with anterograde amnesia
Spatial learning: find it hard to remember spatial locations
Describe the process in Morris water maze
tub filled with water that you cant see through, with a hidden platform and drop a rat in there. They find the platform and climb out.
in
control- future they swim towards the plat form and get out. They use spatial cues to orient them.
experiment- lesion the hippocampus. makes them slower but they learn over time.
this shows it is a basal ganglia dependent function
They evaluate what movements are rewading
Is the learning in Morris water maze for rats . with lesioned hippocampus implicit or explcit
it is implicit: not a planned movement. They just know its right to swim this way
Do rats with lesioned hippocampus approach it from in the same direction every time new time
No they approach it from different directions all the time because they have no memory created to thepath
How did they test for basal ganglia learning in rats
take out any dopamine in the animal and the animal cant do any reinforcement learning
what happens when you put a rat with no dopamine in the Morris water maze
they will swim with no purpose. They can learn where the exist is but do not swim there on purpose
describe the egotistic way of solving a maze
learning a response strategy and disregarding the feature of the maze
How do rats with lesioned hippocampus actually remember to find the platform
with the help from the basal ganglia. they know there is value in the action.
what is the role of reinforcement learning in rats in the Morris water maze
It gives the animal purpose. the basal ganglia can not act to show that some movement has value.
in a VR maze with people. Who are more successful
those that have a larger basal ganglia
place cells
neuron cells that spike when an animal is in specific place
Do the place stay the same for different places
no, it seems to change in different locations
Border cells
Neurons that fire when the rat is at an east border cell and this is consistent with different places.
grid cells
have a specific grid sizes and distances from different neurons and rotates when when put in a different lace
time cells
fire when an animal is waiting for some time to begin movement again
