Sensation and Perception Vocabulary Flashcards Preview

IB Pyschology > Sensation and Perception Vocabulary > Flashcards

Flashcards in Sensation and Perception Vocabulary Deck (62)
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1

Knesthesis

the sense of body position and movement of body parts, also called kinesthesia

2

Neuromatrix theory

the theory that a matrix of neurons in the brain is capable of generating pain (and other sensations) in the absence of signals from sensory nerves

3

Equilibrium

the sense of balance

4

Semicircular Canals

sense organs in the inner ear, which contribute to equilibrium by responding to rotation of the head

5

Needs

when we need something, have an interest in it, or want it. Therefore you are more likely to perceive it.

6

Expectations

The tendency to perceive what you believe

7

Perceptual set

a habitual way of perceiving based on expectations

8

Subliminal perception

Messages sent underneath your absolute threshold that are processed and received unconsciously

9

Subliminal persuasion

persuading someone by using subliminal perception

10

Sensation

detection of physical energy emitted off a reflected physical object

11

Perception

set of processes that organize sensory impulses into meaningful patterns

12

Sense receptors

specialized cells that convert physical energy in the environment or the body to electrical energy that can be transmitted as nerve impulses to the brain

13

anatomical encoding

a type of code that is related to physical structure, dealing specifically with the doctrine of specific nerve energies

14

doctrine of specific nerve energies

the doctrine that different sensory modalities such as vision and hearing, exist because signals received by the sense organs stimulate different nerve pathways leading to different areas of the brain.

15

Functional encoding

variation within each sense, ie. red versus rose

16

psychophysics

study of how physical properties of stimuli relate to our psychological experience

17

absolute threshold

smallest quantity of physical energy that can be reliably detected by an observer

18

Visible spectrum of electromagnetic energy

our visual system detects only a small fraction of the electromagnetic energy around

19

gustation

taste, occurs due to chemicals stimulating thousands of receptors in the mouth

20

papillae

knoblike elevations on the tongue containing the tastebuds

21

taste bud

nests of taste-receptor cells (salty, sour, bitter, sweet)

22

olfaciton

sense of smell

23

gate control theory

theory that the experience of pain depends partly on whether pain impulses get past a neurological “gate” in the spinal cord to reach the brain

24

phantom pain

person continues to feel pain seemingly from an amputated limb, or an organ that was surgically removed

25

supertasters

find saccharin, caffeine, broccoli, and many other substances very bitter and others very sweet or sour

26

tasters

detect less bitterness, sourness, sweetness

27

nontaster

do not taste bitterness, sourness, sweetness

28

olfactory nerve

signals from the receptors are carried to the brain’s olfactory bulb through this nerve

29

signal detection theory

a psychological theory that divides the detection of a sensory signal into a sensory process and decision process.

30

sensory adaptation

the reduction or disappearance of sensory responsiveness that occurs when stimulation is changing or repetitious.