Further Revision Flashcards
1
Q
tracts
A
bundles of axons in the CNS (white matter)
2
Q
planes of view
A
sagittal - left
cornonal - right
horizontal
3
Q
speed of propogation of the action potential
A
- Speed of propagation of the action potential is determined by:
- Diameter of axon (bigger=faster).
- Presence of absence of a myelin sheath.
4
Q
fMRI
A
- Neural firing changes the oxygenated blood flow to the active brain area (the haemodynamic response).
- Deoxyhaemoglobin is a paramagnetic (attracts to magnetic field) whereas oxyhaemoglobin is diamagnetic (repels magnetic field).
- This differential magnetic susceptibility allows us to monitor changes in blood oxygenation levels that are triggered by neural activity.
- fMRI reveals patches of cortex in the fusiform gyrus that show increased BOLD response to faces.
- This area has become known as the fusiform face area (FFA).
- fMRI has shows that two other brain regions are activated by viewing faces.
- The Occipital face area responds to facial features.
- The superior temporal sulcus (STS) is activated to actual and implied facial motion.
5
Q
- Structural encoding/perception of facial features=
A
inferior occipital gyri.
6
Q
- Perception of unique identity
A
= lateral fusiform gyrus
7
Q
- Peripheral aspects of expression analysis, eye gaze, perception and speech
A
= superior temporal sulcus.
8
Q
rey complex figure
A
- helps with memory and identifying executive functioning.
client is asked to replicate a drawing
9
Q
anterograd amnesia
A
loss of information following the onset of amnesia
Unable to store or retain any new memories of events or episodes.
10
Q
serial position effect
A
U-shaped curve
11
Q
Medio Temporal Lobes and memory
A
MTL structures involved in the declarative memory system
12
Q
Fusiform Face Area
A
patches of cortex in the fusiform gyrus that show increased BOLD response to faces
