Exp3604c (questions well answered)
already passed
Akinetopsia - correct answer ✔✔inability to see objects in motion
patient L.M
anatomy of the eye - correct answer ✔✔•Cornea - where light first passes through - focuses
light
•Lens - bends light further inward toward the retina -- (accommodation)
•Retina - contains sensory receptors that transduce light into neural signals
•Pupil - determines how much light enters the eye
•Iris - color and determines the size of the pupil
accommodation - correct answer ✔✔behind iris , muscles change the shape of the lens
•Flatten lens to focus on distance objects
•Thicken lens to focus on closer objects
how are photoreceptors(sensory receptors) like rods and cones different? - correct answer
✔✔•Rods (120 million)
•Responsive even in dark (scotopic)
•Shape/contrast
sensitive to dim light
lower acuity
color-blind
, none in fovea/ more in periphery
•Cones (6 million)
•Responsive in daylight (photopic)
•Color
can't function in dim light
higher acuity
color-sensitive
mostly fovea/none in periphery
Fovea - correct answer ✔✔•center of retina, high density of photoreceptors
•Greatest visual acuity/resolution
•High number of cones, low number of rods
•Highest density of L-cones and M-cones
Peripheral - correct answer ✔✔•sides, low density of photoreceptors
•Poor visual acuity
•High number of rods, low number of cones
•Highest concentration of S-cones
lateral inhibition - correct answer ✔✔•A pattern in which cells, when stimulated, inhibit the
activity of neighboring cells
Explain how single-cell recordings have been used to understand neural functioning in the visual
system. - correct answer ✔✔This is a process in which investigators can record moment by
moment, the pattern of electrical charges within a single neuron-
already passed
Akinetopsia - correct answer ✔✔inability to see objects in motion
patient L.M
anatomy of the eye - correct answer ✔✔•Cornea - where light first passes through - focuses
light
•Lens - bends light further inward toward the retina -- (accommodation)
•Retina - contains sensory receptors that transduce light into neural signals
•Pupil - determines how much light enters the eye
•Iris - color and determines the size of the pupil
accommodation - correct answer ✔✔behind iris , muscles change the shape of the lens
•Flatten lens to focus on distance objects
•Thicken lens to focus on closer objects
how are photoreceptors(sensory receptors) like rods and cones different? - correct answer
✔✔•Rods (120 million)
•Responsive even in dark (scotopic)
•Shape/contrast
sensitive to dim light
lower acuity
color-blind
, none in fovea/ more in periphery
•Cones (6 million)
•Responsive in daylight (photopic)
•Color
can't function in dim light
higher acuity
color-sensitive
mostly fovea/none in periphery
Fovea - correct answer ✔✔•center of retina, high density of photoreceptors
•Greatest visual acuity/resolution
•High number of cones, low number of rods
•Highest density of L-cones and M-cones
Peripheral - correct answer ✔✔•sides, low density of photoreceptors
•Poor visual acuity
•High number of rods, low number of cones
•Highest concentration of S-cones
lateral inhibition - correct answer ✔✔•A pattern in which cells, when stimulated, inhibit the
activity of neighboring cells
Explain how single-cell recordings have been used to understand neural functioning in the visual
system. - correct answer ✔✔This is a process in which investigators can record moment by
moment, the pattern of electrical charges within a single neuron-
