Unit 3

Question 1

Sensation

Answer 1

Sensory receptors and nervous system receive stimulus energies

Question 2

Perception

Answer 2

Organizing and interpreting sensory information

Question 3

Bottom up processing

Answer 3

Sensory receptors and works up to brains integration of sensory information

Question 4

Top down processing

Answer 4

Guided by higher level mental processes. Experience and expectations

Question 5

Selective attention

Answer 5

Focus conscious on single stimulus

Question 6

Inattentional blindness

Answer 6

Failing to see visible objects when our attention is directed elsewhere

Question 7

Change blindness

Answer 7

Failing to notice change in environment

Question 8

Transduction

Answer 8

Conversion of one form of energy into another. Sights sounds smells to neural impulses

Question 9

Psychophysics

Answer 9

Physical characteristics of stimuli and psychological experience of them

Question 10

Absolute threshold

Answer 10

Minimum stimulus energy needed to detect stimulus 50% of the time

Question 11

Signal detection theory

Answer 11

No single absolute threshold and Varys depending on experience, expectations, motivation, alertness

Question 12

Subliminal

Answer 12

Below ones absolute threshold

Question 13

Priming

Answer 13

Activation of certain associations

Question 14

Difference threshold

Answer 14

Minimum difference between 2 stimuli

Question 15

Weber’s law

Answer 15

To be perceived different, two stimuli must differ by constant minimum percentage

Question 16

Sensory adaptation

Answer 16

Diminished sensitivity consequence of constant stimulation

Question 17

Perceptual set

Answer 17

Perceive one thing and not another

Question 18

ESP

Answer 18

Perception can occur apart from sensory input

Question 19

Parapsychology

Answer 19

Study of paranormal

Question 20

Wavelength

Answer 20

Distance from peak to peak

Question 21

Hue

Answer 21

Color determined by wavelength of light

Question 22

Intensity

Answer 22

Amount of energy in a light wave or sound wave. Determined by amplitude

Question 23

Pupil

Answer 23

Adjustable opening in center of eye

2

Question 24

Iris

Answer 24

Ring of muscle tissue forming color portion of eye and control size of pupil

Question 25

Lens

Answer 25

Transparent structure behind pupil, change shape to help focus 3

Question 26

Retina

Answer 26

Light sensitive inner surface of eye. Receptor rods and cones

Question 27

Accomodation

Answer 27

Eyes lens changes shape to focus near or far objects on retina

Question 28

Rods

Answer 28

Detect black white and gray. Sensitive to movement. Peripheral and twilight vision

Question 29

Cones

Answer 29

Fine detail and give rise to color sensation

Question 30

Optic nerve

Answer 30

Nerve carrying neural impulses from eye to brain

Question 31

Blind spot

Answer 31

Point where optic nerve leaves eye

Question 32

Fovea

Answer 32

Central focal point in retina. Eyes comes cluster

Question 33

Feature detectors

Answer 33

Nerve cells respond to specific features of stimulus Shape angle movement

Question 34

Parallel processing

Answer 34

Processing many aspects of a problem simultaneously

Question 35

Three color theory

Answer 35

Retina has three different types of color receptors When stimulated produce perception of color

Question 36

Opponent process theory

Answer 36

Opposing retinal processes enable color vision