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CogSci 1B Midterm 1-Final Exam Questions and Answers $12.99
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CogSci 1B Midterm 1-Final Exam Questions and Answers

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CogSci 1B Midterm 1-Final Exam Questions and Answers

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  • December 9, 2024
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UPPERFRONT
CogSci 1B Midterm 1-Final Exam
Questions and Answers

Neural Basis of Perception - Answers -Began in 1980's when people were getting better
at neural imaging techinques

Pathways of Visual Information (2) - Answers -Dorsal Stream (Finding a dolphin's dorsal
fin): Spatial location, begin in the striate cortex and then end in the posterior parietal

Ventral Stream: What it is and form: Striate and then goes to the temporal cortex

Marr's tri-level information hypothesis - Answers -Information processing is held at 3
levels
Computational: Highest most abstract level
Algorithm: What is it. Specifies how the data will be transformed
Implementation: What do we need: How do representations get represented physically?

Marr's theory of visual processing (Follows from the tri-level information hypothesis) -
Answers -Take complex stimuli and represent them

1.
Light and dark features and make a very rough sketch

2.
2.5 dimensional thing where you're trying but still bound by the viewing location, and it
changes with movement and motion

3.
Finally 3-dimensional!!! Solves constancy problem that it'll change when you move
because you see all of it

But....bad b/c didn't have neural implementation; was too ideal

Elongation Axis (Marr) - Answers -The axis by which most of the objects matter is
revolved around

Symmetry Axis (Marrs) - Answers -Axis by which it's symmetric in mirror halves

Flow of Visual Information - Answers -Starts at the optic nerve, goes through the optic
chaism and splits off into 2 before heading into the brainstem before going into the

,thalamus (LGN: Lateral geniculate cortex) and then V1 and V2 and splits into
dorsal/ventral streams

V1: Primary Visual Cortex - Answers -Coming from LGN

Process low level features which feature detectors that try to do orientation and
direction of movement, finding edges and countours

Maps onto the V2/Striate cortex

V2: Striate Cortex - Answers -Coming from V1. tries to do more complex arrangements
of edges and shape.
Also does depth and determines retinal disparity, which is just because of binocular
vision.

In the extrastriate cortex, uust outisde, they process more shit

Stereopsis - Answers -Depth Perception

Trichromatic Theory of Coloar - Answers -Retina has 3 cones: red, green, and blue

Opponent Process Theory of Color - Answers -Color receptor cells have an excitatory
center and inhibitory surround and the color pairings

Color and marketing - Answers -Color can affect marketing: duh w/ assocations
Ellie - Answers -Robot that is a virtual therapist: analyzes tone of speech, breathing

Self-Driving Cars - Answers -Ex: Kiwibot, autonomous ships

AI only in circumsized domains: need to be able to deal with the unexpected

We have much more folk knowledge than the computer (reading peoples eyes)

Less human errors and accessillibity

but hacking and loss of jobs + money
+ moral decisions (race/age hierarchy)

Public AI - Answers -Fire services and police/military

Increasingly sent into environments where they make decisions on their own

Home Robots - Answers -Cooking/Cleaning

Elderly and visiting children: bridges gaps

, Social robots - Answers -Language Processing for notes
Advertising
Customer Service
Finance/Economics

Humans vs robots - Answers -RObots cant'
empathy
insight
Tackle novel problems
Misses human spontaniety (large volumes of data)
Make plans for the far future
and be conscious

AI and jobs - Answers -Makes new jobs (also takes some away and makes them more
specialized)

Cant do emotionally demanding/creative jobs

Risk/Dangers of AI - Answers -Hacking
Sci Fi: turning malicious
Deep Fakes
Loss of privacy/jobs
Increasing computer: Negativey affects myelination and structural integrity of neurons +
lower congitive tests+poor verbal memories

Blue Light Exposure - Answers -Brain Neurodegeneration and shortening of light span
in fruit flies

Expression of Emotions - Answers -Mainly nonverbal: face and gestures, tone of voice

Emotions are embodied: take physical form

Paul Elkman: 7 universal basic emotions

Emotions and observation - Answers -Not learned thru obervsation: Blind/deaf children
manifest emotions the same as other chidlren



Ventral Pathway - Answers -The 'what' stream
After being in V2, it's sent to V4 and then the ITC, inferior temporal cortex, which is
responsible for identifying faces and body parts.

Blindsight - Answers -Rare condition where people who are blind in a visual field can
'guess' things in their non-vision, like location of an object or the emotion of a face.

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