Perception Flashcards

1
Q

What is featural analysis?

A

Recognition of a whole object depends on its features

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2
Q

What is template matching?

A

Every object, event or other stimulus we encounter and want to derive meaning from is compared to some previously stored template

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3
Q

In terms of Marr’s theory, what is primal sketch?

A

2D sketch description of main light-intensity changes of a visual stimulus, includes info about edges, contours & blobs

Observer centred

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4
Q

In terms of Marr’s theory what is 2 1/2 D sketch?

A

Shading, texture, binocular disparity and very basic info about depth

Observer centred

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5
Q

In terms of Marr’s theory what is 3D model representation?

A

3D aspects of an objects shape

Viewpoint invariant

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6
Q

What is Bierdermans Recognition-by-component theory suggesting about how object perception is achieved?

What are they called?

A

Object perception is achieved via volumetric primitives

Geons

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7
Q

How many geons?

A

36

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8
Q

What is the whole picture?

A

A perceptual or structure possessing qualities as a whole that cannot be described merely in subparts

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9
Q

What are GESTALT principles?

FCCPSC

A
Figure and ground 
Closure 
Continuity
Proximity 
Similarity 
Common fate
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10
Q

What is common fate?

A

Elements are likely to be perceived as a unit if they move together e.g. Flock of birds

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11
Q

What is similarity?

What are dissimilar objects thought of as?

A

Object look similar to one another people perceive them as a group or pattern e.g. A sigil

Anomaly

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12
Q

What is continuity?

A

When the eye is compelled to move through one object and continue through another e.g. A curve

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13
Q

What is closure?

A

When an object is not completed we fill in the gaps e.g. WWF Panda

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14
Q

What is proximity?

A

When objects are placed close together they are perceived as a group

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15
Q

What is figure and ground?

A

The eye differentiates an object from its surrounding area a shape is perceived as figure surrounding area is background

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16
Q

What did Davenport and Potter find?

A
Inconsistent objects (priest/
Rugby player) and inconsistent background (church/playing field) were less accurate than consistent
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17
Q

What is top down processing?

A

How our brains make use of info brought into brain by one or more sensory systems

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18
Q

What is prototype matching?

A

An extant match between the stimulus and template is not required only an approximate match

19
Q

What is a prototype?

A

Abstract forms representing the basic elements of a set stimuli

20
Q

What makes objects become more salient in the environment?

A

Joint attention between caregiver and infant

21
Q

Taylor found New Guinea have two terms, what are they?

A

Mola- white, red, orange, yellow, pink, purple

Mill- black, blue, green

22
Q

What do many languages not have?

A

Separate terms for green and blue but one term

23
Q

How many Berlin and Kay’s universal colour terms were there?

What did Berlin and Kay argue their study suggest?

A

11 basic colour terms (monolexemic)

Different native speakers can perceive the world the same way

24
Q

What did Roberson find about grue?

A

Distinguished less between green and blue squares

25
What is the dorsal stream?
Where stream
26
What is the ventral stream?
What stream
27
What is the pathway of the dorsal (where) stream? What is it responsible for?
V1 ➡️V2 ➡️ dorsomedial area ➡️ V5 ➡️ inferior parietal lobules Processing motion, representation of object locations, control of eyes and arms, especially hand eye coordination
28
What is the ventral stream (what) pathway? Responsible for what?
V1 ⏩ V2 ⏩ V4 ⏩ inferior temporal cortex Form recognition and object representation, storage of LTM
29
What did damage to ventral area cause?
Incapable of pattern discrimination, but coordination in tact
30
What did dorsal damage cause?
Able to discriminate patterns but unable to navigate themselves
31
What did Haxby et al. find the dorsal route was strongly activated for? What was the ventral route strongly activated for?
Location task Faces task
32
What do newborns prefer? What are prefer top heavy or normal upright faces?
Geometrical non-face like stimuli with more elements in the upper part of stimuli over more in the lower Upright
33
Is there a specific area for face in brain?
Yep, Fusiform face area Parahippocampal gyri
34
What is face recognition governed by A. Configural info B. Featural info C. Both configural and featural
Both configural and featural
35
Thatcher illusion (Thompson) suggests what?
We process faces as whole (configural) objects but also take into account their features (featural)
36
What is Pragnanz law?
People will interpret things in their simplest forms
37
Face inversion effect?
Faces are harder to recognise when upside down (inverted)
38
Uniform connectedness?
Objects connected in some way e.g. Same colour, linked by likes are thought to be single (more connected than others)
39
What is a visual buffer
A short-term visual memory store (Kosslyn)
40
Reversible figure
Duck/goose
41
Feature binding
Integrating an objects various properties into a coherent shape
42
Selectivity
Very careful when choosing
43
Invariance
To remain unchanged regardless of changes in conditions
44
Tacit knowledge
We can know more than we can tell, knowledge that cannot be articulated via verbal means