14 Visual Cortex Flashcards
2 - The optic nerve refers to information from the retina to LGN, true or false?
False
3 - A patient damaged the right side of the optic nerve, which eye is mostly affected?
right eye
3 - a patient damaged the optic chiasm, which side of the eyes are most affected?
temporal sides of right and left
4 - T/F: light and vision are central part of the way we map the world?
true
5 - how many layers are in the visual cortex?
6 layers
6 - T/F: magnocellular contains larger axons and reaches to cortex slower?
False
8 - which layer of cortex contains the complex cells?
layers 2, 3, 5, and 6
9 - what type of input are simple cells sensitive to?
particular orientation of light
10 - are receptive fields of simple cells all the same?
no - they are all varied
11 - T/F: a simple cell is sensitive to particular angles of movement?
False - complex cells
11 - T/F: complex cells only respond to horizontal movement
False
12 - what is a complex end-stopped cell?
a cell that responds to a particular orientation but only within a certain sized box field
14 - where do the ganglion cells in the retina send their signal to?
LGN and then to the simple cells in the cortex
15 - T/F: ocular dominance columns codea from a particular eye (right or left)
true
16 - ocular dominance columns receive input into which layer of the visual cortex?
4
17 - 4C signals go to which layers of complex cells and form binocular input?
2 and 3
18 - T/F: in ocular dominance columns, selective cells are not mapped out in a systemic orientation
false
19 - which connection goes to blobs?
koniocellular
19 - T/F: midget cells relay to blob regions
true
19 - blobs code for: black and white, color or both?
color
21 - other dorsal areas receive input directly from where?
medial superior temporal (MST) area
21 - T/F: other ventral areas receive input directly from the inferior temporal (IT) gyrus/cortex?
True
22 - recognizing new things or making new movements is: hyperacuity, problematic, or modularity?
problematic
22 - what does hyperacuity mean?
used to describe our ability to perceive signals smaller than the resolution of our neural transducers
23 - in the limiting case of one neuron, both local and vector coding are: failing, selective, the same or binocular?
the same
24 - T/F: single photo-receptors can encode any specific wavelength?
False
24 - cones respond to: complexity and acuity, frequency and intensity, or texture and selectivity?
frequency and intensity
25 - the visual cortex area _____ is concentrated and located in and around the calcarine fissure/sulcus? V1, V2, V3, V4
V1
