Exam 2 Flashcards

(68 cards)

1
Q

Embodied cognition

A

Idea that cognition depends not only on the mind but also on the physical constraints of the body

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2
Q

Fovea centralis

A

Area of extremely high density of photoreceptors in the eye

Portion of retina that light falls onto when you focus your gaze on something

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3
Q

When do we use the fovea

A

Directed looking, vast majority of Vision is here

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4
Q

Overt attention

A

Attending to something by looking at it

Play major role in everyday attention

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5
Q

Covert attention

A

Attending to something without looking at it

Looking out the corner of your eye

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6
Q

Foveated rendering

A

Changes resolution of the image, depending on where someone is looking at that moment

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7
Q

Saccade

A

Rapid movement

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8
Q

Fixation

A

Brief pauses

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9
Q

Bottom-up determinants of our eye movements

A

Refer to the fact that certain physical properties are more “eye-catching”
High contrast, bright colors, movement

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10
Q

Top-down determinants of our eye movements

A

Refer to the fact that we have knowledge and goals which affect attention

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11
Q

Mind seems to cause our eyes to focus on specific areas

A

Goals

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12
Q

Brain regions involved in controlled eye movements

A

Frontal eye fields, frontal lobe

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13
Q

Brain regions involved in reflexive ones

A

Superior colliculus, midbrain near thalamus

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14
Q

Controlled eye movements

A

Endogenous

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15
Q

Reflexive eye movements

A

Exogenous

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16
Q

What are regressions with respect to eye movements in reading

A

Right to left movements of the eye ( going back to previously read text)

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17
Q

When do regressions tend to occur?

A

When we don’t understand something

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18
Q

Which words do our eyes tend to skip over

A

Highly predictable words

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19
Q

Under what conditions are saccades shorter versus longer

A

Smaller jumps when material is difficult, words are long, usually, or mis-spelled

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20
Q

Differences in eye movements between skilled readers and poor readers

A

Good readers make larger jumps
Make fewer regressions
Have shorter fixations

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21
Q

Moving window technique

A

Certain eye trackers can make a certain distance from the fixation point change to X

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22
Q

Mindless reading

A

As people become fatigued (or bored) they sometimes engage in mindless reading
Eyes moving across page but nothing really sinking in

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23
Q

What happens if only one letter is colored in the Stroop Task

A

Much less interference

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24
Q

Important results of Durgin’s modified Stroop Task

A

Demonstrated a reverse Stroop effect

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25
Attention capture
Diversion of attention by a stimulus so powerful that it compels us to notice it, even when attention is focused elsewhere
26
Stimuli that tends to capture our attention
Loud noises Threatening stimuli Face Bodies
27
Results of attention capture
Spider was more likely to be noticed, than the syringe during Attention trials
28
Idea of attention capture study
Evolutionary important and common stimuli will be more readily noticed Spider-- ancient threat to well being Syringe-- modern,learned threat
29
Pattern of results for faces, bodies, shapes, guns, cars, phones
80 % likely to notice if it is a human face or body | 20% for cars, gun, phones
30
Exogenous attention ---> attention capture
``` Automatic attraction by something usual or sudden or important stimuli Outside oneself Loud noises Threatening stimuli Faces Bodies ```
31
Endogenous attention
Conscious decision to selectively attend to or scan for certain things From within Where's Waldo ?
32
Most associated with attention capture
Exogenous
33
Involves more top-down processing
Endogenous
34
Involves more bottom-up
Exogenous
35
Type of cue with exogenous
Peripheral
36
Type of cue endogenous
Central
37
2 streams orienting attention network
Dorsal | Ventral
38
Type of stream associated with endogenous
Dorsal
39
Type of stream associated with ventral
Exogenous
40
Brain regions involved in dorsal stream
Frontal eye fields | Intraparietal sulcus
41
Brian regions involved with ventral stream
Ventral frontal cortex | Temporoparietal junction
42
Function frontal eye fields
Voluntary eye movements
43
Function intraparietal sulcus
Visually guided action, visual attention
44
Function ventral frontal cortex
Stimulus characteristics, risk, fear
45
Function temporoparietal junction
Integrates information from external environment as well as within the body
46
Endogenous (top-down) attention gives us incredible flexibility in allocating our attention
System helps us tune out distractors, formulate goals
47
Exogenous (bottom-up) attention gives us incredible flexibility in allocating our attention
Circuit breaking function --> helps us notice other information E.g. Someone yelling fire, allows flexibility of attention otherwise we'd be stuck in our task
48
Conclusion about divided attention from this research
People are rapidly switching their focus on their attention Some people make more rapid switches, so they miss fewer numbers, but still switching No such thing as multitasking
49
Processing capacity
Amount of information that a person can handle process at that time
50
Cognitive load
Amount of cognitive resources required to perform a particular task
51
low road
Require relatively few cognitive resources
52
High load
Require greater amounts of our limited cognitive resources
53
How talking on a cell phone affects our performance
Walk slower Change direction more often Weave More Acknowledge others less Slightly more likely to be involved in collisions More than twice as likely to in-attentional blindness
54
Do smart phones make it easier or harder to resist the urge to multitask
Harder
55
Multitasking decreases performance in hours
2.1 hours per day
56
Multitasking IQ
Lowers by 10 points
57
multitasking marijuana effects
2 x effect
58
Do students using laptops in class usually use them for school
No 62% of web pages opened by students are unrelated to course content On average 65 new screen windows per lecture
59
Task switching
Sometimes the decision you need to make is the same, sometimes its a switch
60
switch cost
General phenomenon of performance being worse for a period of time immediately after a switch
61
super-tasker
Person who thinks they are among everyone else not adversely affected my multitasking
62
Percent of people qualify as super-tasked
2%
63
Filtering irrelevant distractions
Are 2 rectangles in same position
64
Working memory (n-back) task
Identity if current item is same as the item "n" items ago
65
Task switching
If a letter is it a vowel or consonant, number even or odd
66
implicit
High multitasking rely on shallow implicit memory, gut feeling
67
explicit
Can actually recall, memory codes
68
Does talking on phone affect driving performance
20% slower to hit the breaks | Missed 2x as many red lights