Lecture 5 Flashcards
Memory
What did Donald Hebb propose?
Each memory is a pattern of firing
What is a cell assembly?
A group of connected neurons that fire in a certain pattern to represent a memory
What is short term memory (by Hebb)?
Cell assembly forms a closed loop after activation and reverberation is memory
What is long term memory (by Hebb)?
Cells in the assembly strengthen connections so easier to get same firing pattern
What is reactivation?
When remembering an event the same part of the brain is active as when the memory was made
What did Davis et al. (1992) do?
Blocked NMDA receptors and looked at water maze performance
What did Pastalkova et al. (2006) do?
Reversed LTP with ZIP drug put in rotating maze and has to avoid a certain area
What does V4 do?
Colour perception
What does V5 do?
Motion perception
What does IT cortex do?
Recognises shapes
What is the binding problem?
How does brain link so many separate components to know is one object
How does brain bind things as one object?
When things fire together they wire together so recognise as one object
