Brain and Behavior Exam 3 FSU
Registration of physical stimuli from the environment by the _____ _____ correct
answers Sensation, sensory organs
Subjective interpretation of sensations by the _____. Allows for illusions correct
answers Perception, brain
proposed by Johannes _____, the nature of perception is defined by the pathway over
which the sensory information is carried correct answers Muller, The law of specific
nerve energies
Hole in the center of the eye where light passes through.Size (dilated or constricted)
determines how much light can pass. correct answers Pupil
Circular band of muscles that controls the size of the pupil, therefore controls light entry.
Dilates with dilator and constricts with sphincter. correct answers Iris
Bends light (to focus image on retina) passing through the eye. How? By bending
itself... Ciliary muscles control its curvature.The cornea also focuses light. correct
answers Lens
Point of central focus - most detailed vision happens here. correct answers Fovea
Tissue with nerve cells and photoreceptors.Like an outgrowth of the brain (same
embryonic tissue). correct answers Retina (Rods and cones)
Hole in retina where optic nerve exits eye.No photoreceptors her (blind spot). correct
answers Blind Spot
Cranial Nerve (CN) IISensory info from photoreceptors to brain. correct answers Optic
nerve
Clear outer layer of the eye correct answers Cornea
receives input from photoreceptors. correct answers Bipolar Cell
links photoreceptors and bipolar cells. correct answers Horizontal Cells
links bipolar cells and ganglion cells. correct answers Amacrine Cell
gives rise to the optic nerve. correct answers Retinal Ganglion Cell
, Order light hits the Retinal Circuitry correct answers GAHR
Without light, receptors _____ bipolar cells correct answers inhibit
Light _____ receptors correct answers hyperpolarizes
Receptors top _____ release correct answers NT
Bipolar cells are _____ correct answers disinhibited
Bipolar cells stimulate ______ cells by releasing excitatory _____ correct answers
ganglion, NT
Action Potential down _____ _____ correct answers Optic Nerve
are responsible for vision at low light levels (scotopic vision). They do not mediate color
vision, and have a low spatial acuity. correct answers Rods
are active at higher light levels (photopic vision), are capable of color vision and are
responsible for high spatial acuity. The central fovea is populated exclusively by them.
correct answers Cones
Acuity-Sensitivity Trade-off. One to One correct answers Good acuity (fovea)
Acuity-Sensitivity Trade-off. Many to one, convergance. correct answers Good
sensitivity, poor acuity (rods of fovea)
Red Light correct answers Long wavelength
Green light correct answers Medium Wavelenght
Ble light correct answers Short wavelength
______ are compromised of rods and cones that respond to different wavelengths
correct answers Photopigments
The exact structure of _____ molecule determines maximum sensitivity to wavelengths
of light correct answers Opsin
Three kinds of receptors for human color vision (color cones)•Determined by the
particular opsin within a photoreceptor• correct answers Trichromatic Theory
suggests the cortex compares information from various parts of the retina to determine
the brightness and color for each area.-Better explains color constancy. correct
answers Retinex Theory
Registration of physical stimuli from the environment by the _____ _____ correct
answers Sensation, sensory organs
Subjective interpretation of sensations by the _____. Allows for illusions correct
answers Perception, brain
proposed by Johannes _____, the nature of perception is defined by the pathway over
which the sensory information is carried correct answers Muller, The law of specific
nerve energies
Hole in the center of the eye where light passes through.Size (dilated or constricted)
determines how much light can pass. correct answers Pupil
Circular band of muscles that controls the size of the pupil, therefore controls light entry.
Dilates with dilator and constricts with sphincter. correct answers Iris
Bends light (to focus image on retina) passing through the eye. How? By bending
itself... Ciliary muscles control its curvature.The cornea also focuses light. correct
answers Lens
Point of central focus - most detailed vision happens here. correct answers Fovea
Tissue with nerve cells and photoreceptors.Like an outgrowth of the brain (same
embryonic tissue). correct answers Retina (Rods and cones)
Hole in retina where optic nerve exits eye.No photoreceptors her (blind spot). correct
answers Blind Spot
Cranial Nerve (CN) IISensory info from photoreceptors to brain. correct answers Optic
nerve
Clear outer layer of the eye correct answers Cornea
receives input from photoreceptors. correct answers Bipolar Cell
links photoreceptors and bipolar cells. correct answers Horizontal Cells
links bipolar cells and ganglion cells. correct answers Amacrine Cell
gives rise to the optic nerve. correct answers Retinal Ganglion Cell
, Order light hits the Retinal Circuitry correct answers GAHR
Without light, receptors _____ bipolar cells correct answers inhibit
Light _____ receptors correct answers hyperpolarizes
Receptors top _____ release correct answers NT
Bipolar cells are _____ correct answers disinhibited
Bipolar cells stimulate ______ cells by releasing excitatory _____ correct answers
ganglion, NT
Action Potential down _____ _____ correct answers Optic Nerve
are responsible for vision at low light levels (scotopic vision). They do not mediate color
vision, and have a low spatial acuity. correct answers Rods
are active at higher light levels (photopic vision), are capable of color vision and are
responsible for high spatial acuity. The central fovea is populated exclusively by them.
correct answers Cones
Acuity-Sensitivity Trade-off. One to One correct answers Good acuity (fovea)
Acuity-Sensitivity Trade-off. Many to one, convergance. correct answers Good
sensitivity, poor acuity (rods of fovea)
Red Light correct answers Long wavelength
Green light correct answers Medium Wavelenght
Ble light correct answers Short wavelength
______ are compromised of rods and cones that respond to different wavelengths
correct answers Photopigments
The exact structure of _____ molecule determines maximum sensitivity to wavelengths
of light correct answers Opsin
Three kinds of receptors for human color vision (color cones)•Determined by the
particular opsin within a photoreceptor• correct answers Trichromatic Theory
suggests the cortex compares information from various parts of the retina to determine
the brightness and color for each area.-Better explains color constancy. correct
answers Retinex Theory
