time, place, space

Question 1

hermann ebbinghaus

Answer 1

first person to quantify memory
‘forgetting curve’: memory decays over time

Question 2

lashley

Answer 2

Where memory was?
Tested via maze (deficits in maze could be because motor not necessarily memory)
He was looking in wrong place -> cerebellum

Question 3

why is it called the perforant pathway from entorhinal cortex

Answer 3

pokes through dentate gyrus

Question 4

place cells

Answer 4

neuronal code for place
cell specific for where you are in space (mapped out via place cells)
fire everytime a rat is in a particular place
ties events to places

Question 5

boarder cells

Answer 5

fire when close to edge

Question 6

head direction cells

Answer 6

which way is head pointing?
fires when an animal’s head is facing a particular direction in an environment (not relative to a compass)

Question 7

speed cells

Answer 7

code for speed

Question 8

place cells vs grid cells

Answer 8

place: if you find something at a place, they’ll fire again when thinking where is the something
grid cells: entorhinal cortex, navigation

Question 9

place fields

Answer 9

place cells are random
(chairs next to eachother dont have cells next to eachother)
when you change environment, the same place cells take on a different identity (code for a different place)

Question 10

what happens when you block LTP/LTD in place cells?

Answer 10

can’t reassign to new environment