Spatial Navigation Flashcards
What did Tolman’s work with rats show?
Implied animals have access to spatial knowledge about environment.
More than just route learning.
What did O’keefe and Dostrovsky discover in rats?
‘Place’
- single cell place cells found in hippocamous
What to Grid cells fire to?
pattern
regular hexogonal lattice
When do head direction cells fire?
on the basis of the direction the head is face
border / boundry cells fire when?
when animal is at set distancefrom nav boundries
What similarities, and two differences between rats and humans
Similarity: similar anatomical structures.
Differences:
* rats have less complex visual systems
* rats are noctornal, rather than diurnal
What is one challenge to measuring navigation? and some solutions.
Navigation is a mobile task.
* virtual or imagined navigation
* spaital memory
What area of the brain is active when perceiving natural scenes
PPA.
What aspects of a scene in the PPA encoding?
Global spatial geometry / configuration
defined by large surfaces.
Does the PPA respond to objects in a scene?
No. Rather global display of a scene.
If the PPA is interested in the global layout, what is interested in individual objects?
Lateral occipital complex and FFA
Is the hippocampus related to landmark identity?
No. But a role in where those landmarks are located.
Where are place-responsive cells primarily found?
In the hippocampus.
What is the retrosplenial complex (RSC) active in?
Allocentric heading
This becomes active when you are heading in a particular environment.
What was Howard london district study? What was the take away?
- Learning of unfamilar layout, fMRI next day
- Different areas of the hippocampus encode for different types of navigation
