Sensation and Perception WEEK 6 Flashcards

1
Q

Making sense of what our brain is telling us

A

Perception

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2
Q

the branch of psychology that studies the relationship between attributes of the physical world and our psychological experience of them.

A

psychophysics

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3
Q

Sensation is an active process in which humans, like other animals, focus their senses on potentially
important information

A

sensation

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4
Q

There is an inexact correspondence
between ——- and —– reality

A

physical and psychological

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5
Q

——- is an active process: it organises and interprets sensations

A

perception

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6
Q

The world as subjectively experienced by an individual,
—is a joint product of external reality and the person’s creative efforts to understand and depict it mentally - constructed from sensory experience

A

—the phenomenological world

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7
Q

Three basic principles apply across all the senses.

A

physicaland psychological reality;

sensation and perception are active, not passive

Evolutionary purpose

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8
Q

—— translate physical stimulation into sensory signals.

A

senses

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9
Q

sensation requires constant —— ——–

A

decision making

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10
Q

receptors that transform energy in the environment
into neural impulses that can be interpreted by the brain

A

sensory receptors

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11
Q

The process of converting physical energy or stimulus information into neural impulses is called
.

A

transduction

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12
Q

——– requires converting energy in the world into internal signals that are psychologically meaningful

A

Sensation

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12
Q

For each sense, the brain —— sensory stimulation for intensity and quality

A

codes

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13
Q

all sensory systems have specialised cells called

A

sensory receptors

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14
Q

Sensation begins with an —– ——–;

A

environmental stimulus

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15
Q

sensory receptors that respond to environmental stimuli and typically generate ——- ——– in
adjacent sensory neurons.

A

action potentials

16
Q

Within each sensory modality, the brain codes sensory stimulation for ———- and ———

A

intensity and quality

17
Q

The process of converting stimulus information into neural impulses is called.

A

transduction.

18
Q

The minimum amount of physical energy needed for an observer to notice a
stimulus is called an

A

absolute threshold

19
Q

to measure absolute thresholds is by
presenting a particular stimulus (light, sound, taste, odour, pressure) at varying intensities and determining
the level of stimulation necessary for the person to detect it about ——— of the time.

A

50 percent

20
Q

irrelevant, distracting information is called

A

noise

21
Q

Specialised cells in the nervous system, called —— ——–, transform energy in the environment
into neural impulses that can be interpreted by the brain

A

sensory receptors

22
Q

The process of converting physical energy or stimulus information into neural impulses is called
.

A

transduction

23
Q

sensation is not a passive process that occurs when the amount of stimulation exceeds a critical threshold; rather, experiencing a sensation means making a judgement
about whether a stimulus is present or absent is the basis of what theory

A

Signal detection theory (SDT)

24
Q

In SDT an the individual’s readiness to report detecting
a stimulus when uncertain is known as

A

response bias (or decision criterion)

25
Q

absolute thresholds, the lowest level of stimulation required to sense that a stimulus is present is called

A

absolute threshold

26
Q

The lowest level of stimulation required to sense a change in stimulation.

A

Difference THreshold

27
Q

JND is the

A

just noticeable difference (or
jnd

28
Q

Regardless of the magnitude of two stimuli, the second must differ from the first by a constant
proportion for it to be perceived as different. This relationship is called

A

Weber’s law.

29
Q

The logarithmic relation between subjective and objective stimulus intensity became known as

A

Fechner’s law.

30
Q

Fechner’s law means that people experience only a small percentage of actual increases in stimulus
intensity but that this percentage is ——-.

A

predictable

31
Q

the tendency of sensory receptors to respond less to stimuli that continue without
change.

A

sensory adaptation

32
Q

Constant sensory inputs provide no
new information about the environment, so the nervous system ignores them. This is known as

A

Sensory adaption

33
Q
A