PBSI 345 Exam 1- TAMU questions
and answers passed
What is perception? - correct answer ✔✔shapes the way we experience the world; involves
recognizing, organizing, representing, and interpreting sensory stimuli in the environment
What is apperceptive agnosia? - correct answer ✔✔unable to recognize or draw simple shapes,
difficulty in perceiving the difference from one object to another
What is associative agnosia? - correct answer ✔✔can recognize simple shapes , but not complex
objects [example : could draw well , but not recognize it as an anchor- called it umbrella]
What parts are in the retina? - correct answer ✔✔rods and cones
What are rods in the eye? - correct answer ✔✔used for night vision
What is the cones [fovea] in eye? - correct answer ✔✔color vision, acuity
How does light pass through eye? - correct answer ✔✔through the lens and falls on the retina
at the back of the eye
Where does light fall on in the eye? - correct answer ✔✔Onto the retina and photoreceptors
(located inside the retina) undergo changes and synapse onto bipolar cells, which then synapse
onto ganglion cells
What forms the optic nerve? What do they do? - correct answer ✔✔ganglion cells, encode
information
, where does the optic nerve transmit too? - correct answer ✔✔primary visual cortex [then to
temporal and parietal lobes]
Order of Visual Information Processing - correct answer ✔✔Photoreceptors -> bipolar cells ->
ganglion cells -> leave & form optic nerve
What is the optic chiasma? - correct answer ✔✔Information from each eye's receptive field
crosses to brain structures on the opposite side [right eye to left brain]
Vision is contralateral, meaning what? - correct answer ✔✔images from opposite sides flip and
go to opposite ends, left eye goes to right side
Vision pathway - correct answer ✔✔images from opposite sides flip and go to opposite ends ->
combine in the Optic Chiasm -> visual cortex -> info from retina goes to cortex via optic nerve
What is LGN? - correct answer ✔✔lateral geniculate nucleus-recognizing objects
What is SC? - correct answer ✔✔Superior colliculus- locating objects in space
What occurs in the "what" pathways and what their respective cortical regions are. - correct
answer ✔✔Ending in the temporal cortex, is responsible for object recognition and
identification. [auditory cortex] [LGN]
What occurs in the "where" pathways and what their respective cortical regions are. - correct
answer ✔✔Ending in the parietal cortex, is specialized for action and responsible for locating
objects in space. [visual cortex] [SC]
and answers passed
What is perception? - correct answer ✔✔shapes the way we experience the world; involves
recognizing, organizing, representing, and interpreting sensory stimuli in the environment
What is apperceptive agnosia? - correct answer ✔✔unable to recognize or draw simple shapes,
difficulty in perceiving the difference from one object to another
What is associative agnosia? - correct answer ✔✔can recognize simple shapes , but not complex
objects [example : could draw well , but not recognize it as an anchor- called it umbrella]
What parts are in the retina? - correct answer ✔✔rods and cones
What are rods in the eye? - correct answer ✔✔used for night vision
What is the cones [fovea] in eye? - correct answer ✔✔color vision, acuity
How does light pass through eye? - correct answer ✔✔through the lens and falls on the retina
at the back of the eye
Where does light fall on in the eye? - correct answer ✔✔Onto the retina and photoreceptors
(located inside the retina) undergo changes and synapse onto bipolar cells, which then synapse
onto ganglion cells
What forms the optic nerve? What do they do? - correct answer ✔✔ganglion cells, encode
information
, where does the optic nerve transmit too? - correct answer ✔✔primary visual cortex [then to
temporal and parietal lobes]
Order of Visual Information Processing - correct answer ✔✔Photoreceptors -> bipolar cells ->
ganglion cells -> leave & form optic nerve
What is the optic chiasma? - correct answer ✔✔Information from each eye's receptive field
crosses to brain structures on the opposite side [right eye to left brain]
Vision is contralateral, meaning what? - correct answer ✔✔images from opposite sides flip and
go to opposite ends, left eye goes to right side
Vision pathway - correct answer ✔✔images from opposite sides flip and go to opposite ends ->
combine in the Optic Chiasm -> visual cortex -> info from retina goes to cortex via optic nerve
What is LGN? - correct answer ✔✔lateral geniculate nucleus-recognizing objects
What is SC? - correct answer ✔✔Superior colliculus- locating objects in space
What occurs in the "what" pathways and what their respective cortical regions are. - correct
answer ✔✔Ending in the temporal cortex, is responsible for object recognition and
identification. [auditory cortex] [LGN]
What occurs in the "where" pathways and what their respective cortical regions are. - correct
answer ✔✔Ending in the parietal cortex, is specialized for action and responsible for locating
objects in space. [visual cortex] [SC]
