Parallel Processing Flashcards
P-cells in the LGN relay what 3 things?
Color, Acuity, Form
What are P-cells sensitive to?
red-green color contrast
M-cells in the LGN relay what 2 things?
Motion and luminance
M-cells are sensitive to what ?
rapid movement
K-cells produce what type of response?
Blue-on response
- respond well to blue-yellow chromatic contrast
This is the relay station for nearly all messages that travel from the cerebral cortex to the rest of the body/brain and back
Thalamus - LGN is located here
M cells tell the LGN ___. P cells tell the LGN ____.
M cells = tell WHERE
P cells = tell WHAT
The magnocellular layer contains what layers of the LGN?
Layers 1 & 2 (Ventral layers)
The parvocellular layer contains what layers of the LGN?
Layers 3-6 (dorsal layers)
Describe the ventral stream?
- In temporal lobe
- P-cells
- WHAT, object discrimination, forms
Describe the dorsal pathway?
- In parietal lobe
- M-cells
- WHERE, action, motion & movment
This theory for dual streams stated that only after both streams are processed does integration occur
Independent Processing = Mishkin
This theory for dual streams stated connectivity is due to dense feedback connections similar to feed forward system.
Feedback account (Distler)
This theory for dual streams stated that there’s interaction from the shared target area and direct lateral connections between the networks.
Continuous cross-talk account (Chen)
This is when the retinotopic map is distorted to enlarge the area devoted to the fovea.
Cortical magnification