PS 222 Exam 2Comprehensive
Examination
orientation, direction of motion, length and width - answer ✔✔-V1 receptive fields are sensitive
to
orientation columns, ocular dominance columns, and retinotopic organization - answer ✔✔-
How are cells organized in V1?
well defined organization of on/off regions - answer ✔✔-Simple V1 cells have a
The RF of LGN cells overlap - answer ✔✔-How do we get orientation based cells when their RF
is made from non-orientation based cells?
Photoreceptors on the retina - answer ✔✔-What is the RF of a V1 cell?
a stimulus anywhere on the RF, there are no clearly defined on/off regions. As long as the
stimulus is in the preferred orientation the cell will respond. - answer ✔✔-Complex V1 cells
respond to
True - answer ✔✔-We have more complex cells than simple cells.
cells that respond to input from both eyes; lay between ocular dominance columns - answer
✔✔-binocular cells
,columns filled with neurons tuned to the same orientation - answer ✔✔-orientation columns
a column of cortex perpendicular to the cortical surface that responds to input from either the
right or left eye, but not to both - answer ✔✔-ocular dominance columns
what forms when orientation columns and ocular dominance columns are put together - answer
✔✔-hypercolumns
things that are next to each other on the retina are next to each other in LGN - answer ✔✔-
retinotopic mapping
activation picture of the world upside down, left-right reversed - answer ✔✔-In V1, there is a
pattern of
dorsal and ventral - answer ✔✔-What are the two pathways leaving V1?
perception of objects; damage to this pathway means you cannot perceive objects but can
name them - answer ✔✔-ventral pathway is responsible for
curvature - answer ✔✔-V4 cells have a preference for
V4, lateral occipital cortex, inferotemporal cortex - answer ✔✔-parts of the ventral pathway
large receptive fields; responds more to form less than detail - answer ✔✔-lateral occipital
cortex (LOC)
, cells that respond to any object in any orientation; huge receptive field, fusiform face area,
parahippocampal place area - answer ✔✔-inferotemporal cortex
a function region that responds to faces only or when confronted by things you are considered
an expert in - answer ✔✔-fusiform face area
proposopagnosia - answer ✔✔-Damage to FFA can cause
responds to places we're familiar with - answer ✔✔-parahippocampal place area
middle temporal cortex, intraparietal sulcus - answer ✔✔-parts of the dorsal pathway
responsible for visual guided actions; lateral, middle, and anterior - answer ✔✔-Intraparietal
sulcus (IPS)
responsible for eye movement and shifts of attention without eye movement - answer ✔✔-
Lateral IP
responsible for reaching and grabbing - answer ✔✔-Middle IP
active during manipulation of objected, especially with fingers - answer ✔✔-Anterior IP
It's important to perceive and be able to grasp the object - answer ✔✔-Why might it be
important to have cross talk between the pathways?
object familiarity, image clutter, object variety, variable view - answer ✔✔-challenges the visual
system faces
Examination
orientation, direction of motion, length and width - answer ✔✔-V1 receptive fields are sensitive
to
orientation columns, ocular dominance columns, and retinotopic organization - answer ✔✔-
How are cells organized in V1?
well defined organization of on/off regions - answer ✔✔-Simple V1 cells have a
The RF of LGN cells overlap - answer ✔✔-How do we get orientation based cells when their RF
is made from non-orientation based cells?
Photoreceptors on the retina - answer ✔✔-What is the RF of a V1 cell?
a stimulus anywhere on the RF, there are no clearly defined on/off regions. As long as the
stimulus is in the preferred orientation the cell will respond. - answer ✔✔-Complex V1 cells
respond to
True - answer ✔✔-We have more complex cells than simple cells.
cells that respond to input from both eyes; lay between ocular dominance columns - answer
✔✔-binocular cells
,columns filled with neurons tuned to the same orientation - answer ✔✔-orientation columns
a column of cortex perpendicular to the cortical surface that responds to input from either the
right or left eye, but not to both - answer ✔✔-ocular dominance columns
what forms when orientation columns and ocular dominance columns are put together - answer
✔✔-hypercolumns
things that are next to each other on the retina are next to each other in LGN - answer ✔✔-
retinotopic mapping
activation picture of the world upside down, left-right reversed - answer ✔✔-In V1, there is a
pattern of
dorsal and ventral - answer ✔✔-What are the two pathways leaving V1?
perception of objects; damage to this pathway means you cannot perceive objects but can
name them - answer ✔✔-ventral pathway is responsible for
curvature - answer ✔✔-V4 cells have a preference for
V4, lateral occipital cortex, inferotemporal cortex - answer ✔✔-parts of the ventral pathway
large receptive fields; responds more to form less than detail - answer ✔✔-lateral occipital
cortex (LOC)
, cells that respond to any object in any orientation; huge receptive field, fusiform face area,
parahippocampal place area - answer ✔✔-inferotemporal cortex
a function region that responds to faces only or when confronted by things you are considered
an expert in - answer ✔✔-fusiform face area
proposopagnosia - answer ✔✔-Damage to FFA can cause
responds to places we're familiar with - answer ✔✔-parahippocampal place area
middle temporal cortex, intraparietal sulcus - answer ✔✔-parts of the dorsal pathway
responsible for visual guided actions; lateral, middle, and anterior - answer ✔✔-Intraparietal
sulcus (IPS)
responsible for eye movement and shifts of attention without eye movement - answer ✔✔-
Lateral IP
responsible for reaching and grabbing - answer ✔✔-Middle IP
active during manipulation of objected, especially with fingers - answer ✔✔-Anterior IP
It's important to perceive and be able to grasp the object - answer ✔✔-Why might it be
important to have cross talk between the pathways?
object familiarity, image clutter, object variety, variable view - answer ✔✔-challenges the visual
system faces
