Chapter 13: The Occipial Lobes Flashcards
1
Q
calcarine sulcus
A
- contains V1
- devides upper and lower visual world
2
Q
lingual gyrus
A
- contains V2 and VP
- middle inferior temporal
3
Q
fusiform gyrus
A
- contains V4
- anterior inferior temporal
4
Q
blobs
A
- in V1
- lots of cytochrome oxidase
- colour perception
5
Q
interblob regions
A
- in V1
- form and motion perception
6
Q
dorsal stream
A
- parietal
- visual guidance
7
Q
ventral stream
A
- object perception
8
Q
V4
A
- the colour area
9
Q
V3
A
- dynamic form
10
Q
V1 damage
A
- blind sight
11
Q
LO
A
- lateral occipital
- damage causes blind sight
12
Q
dorsal stream damage
A
- seeing but no correct grasping
13
Q
visual neurons in posterior parietal
A
- only active when acting on visual info
14
Q
monocular blindness
A
- one eye
- not about the brain
15
Q
bitemporal hemianopia
A
- both outer visual fields
16
Q
homonymous hemianopia
A
- both left / right visual fields blind
17
Q
scotomas
A
- small blind spots
- often unnoticed
18
Q
prosopagnosia
A
- from bilateral calcarine fissure (TPJ) damage
19
Q
appeceptive agnosia
A
- no perception of objects
- often together with simulatagnosia
20
Q
associative agnosia
A
- no recognition
- due to e.g. anterior temporal damage
21
Q
alexia
A
- LH fusiform and lingual areas
22
Q
topographic disorientation
A
- RH medial occipitotemporal region
- often together with impaired facial recogntion
