UCSD PSYC 125 Exam Questions & Answers 2024/2025
What happens when info enters the V1 of the occipital lobe? - ANSWERSInfo splits into 2 streams: dorsal and ventral
Dorsal: Posterior, superior, occipital to parietal lobe
Ventral: posterior, inferior, occipital lobe to temporal lobe
What...
What happens when info enters the V1 of the occipital lobe? - ANSWERSInfo splits into 2 streams: dorsal
and ventral
Dorsal: Posterior, superior, occipital to parietal lobe
Ventral: posterior, inferior, occipital lobe to temporal lobe
What does the dorsal visual stream do? - ANSWERSWHERE pathway
Deals with:
-Spatial location
-Topographical orientation: knowing where you are in space
-Planning and coordination of movement (think of a football game and how imp player throws ball)
What are the deficits of the dorsal visual stream? - ANSWERSNeglect, apraxia, and left-right
discrimination problems
What is neglect? - ANSWERSCan be unilateral or hemi-spatial
If unilateral:
You only have one space, usually inattentive to left visual space, thus having a right hemisphere lesion
Examples of neglect in everyday life - ANSWERS-Trouble reading as reading is from left to right
-Don't eat the left side of a plate (can be temporary or people will adapt)
, Visual aspects of neglect - ANSWERSRight hemisphere pays attention to both the left and right hemi-
space, while the left hemisphere pays attention only to the right hemisphere
Tests for visual neglect - ANSWERS-Drawing task: clock, flower. Cram all info into right side of clock, only
draw right hand side of flower
-Line bisection task: random lines are pre-drawn and you are asked to to draw a bisection. Neglect shows
bias of bisection line to the right
Apraxia - ANSWERSinability to perform purposeful motions (i.e., pantomime)
-motions are spatial so dorsal stream! frontal lobe deals with planning
Left-right discrimination problems - ANSWERSinability to identify left and right
-confusion with spatial judgment
What does the ventral visual stream do? - ANSWERSWHAT pathway
Deals with:
-object recognition
-matches visual shape to internal representation
What are the deficits of the ventral visual stream? - ANSWERSVisual agnosia
What are the discrete regions in the ventral visual stream? - ANSWERSV4 (color)
FFA (face)
Object
V4 (ventral) - ANSWERSability to identify color
FFA (ventral) - ANSWERS-dedicated to faces, also visual expertise
-visual expertise examples: bird watchers, dog show judges
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