Sensation Quiz

Question 1

Selective attention

Answer 1

state of awareness in which one’s focus is upon one particular stimuli • multi-tasking is impossible • most sensations are never perceived

Question 2

Inattentional blindness

Answer 2

focusing upon a particular stimulus so that… √ one is “blind” to any other stimuli

Question 3

Bottom-up processing

Answer 3

a. process of sensation b. senses send information to the brain (see top-down processing of perception) c. Absolute thresholds: √ the weakest level of a stimulus that can be correctly detected at least half the time

Question 4

iris:

Answer 4

√ colored muscle surrounding the pupil: √ regulates the size of the pupil opening

Question 5

pupil:

Answer 5

√ opening in the iris √ affected by arousal √ affected by psychoactive drug use

Light enters

Question 6

retina

Answer 6

Incorporates photo receptor cells (rod and cones) and incorporates bypolar cells and gangalin cells

Question 7

rods:

Answer 7

√ photoreceptor cells in the retina √ detect black, white, and gray and movement √ necessary for peripheral and dim-light vision when cones do not respond

Question 8

cones:

Answer 8

√ photoreceptor cells in the retina √ detect color and fine detail in daylight or in bright-light conditions √ most are concentrated at the fovea of the retina

Question 9

fovea:

Answer 9

√ in the direct line of sight √ incorporates the highest concentration of cones √ visual acuity is sharpest

Question 10

optic nerve:

Answer 10

√ the nerve pathway which carries data from the eye to the brain √ formed by ganglion cell axons

Question 11

pinna:

Answer 11

• funnels sound into the ear

Question 12

Cochlea:

Answer 12

→ snail-shaped fluid-filled tube with hair cells on the basilar membrane → transduces vibrations via hair receptor cells aka next inline with hearing

Tranduces vibrations

Question 13

hammer anvil stirrup

Answer 13

• transmits eardrum’s vibrations via mechanism of 3 tiny bones: → further amplifies sound to inner ear

Question 14

eardrum:

Answer 14

• vibrates with sound waves • amplifies vibrations

hearing takes place heer

Question 15

Auditory nerve:

Answer 15

• sends transduced stimuli to the brain

Question 16

Transduction

Answer 16

process by which sensory systems convert physical and chemical stimuli into electrical signals that the nervous system can use (convert energy for PSN/CSN)

Question 17

Sensation

Answer 17

The world providing info (stimuli) into our brains Stimuli= energy Physical energy: sound, light, temp, pressure Chemical: odor, flavor

Question 18

Wave length

Answer 18

Allows humans to perceive color

Question 19

Amplitude

Answer 19

Allows humans to perceive brightness

Question 20

Cocktail-party effect

Answer 20

Selectively attending to one stimuli such as listening to someone talking to u and u change ur focus when u hear it name

Question 21

Difference threshold and just noticleble difference

Answer 21

Minimum difference between any two stimuli that a person can detect 50% of the time (hold wieghts how much do we add till we notice)

Question 22

Webers law

Answer 22

Our ability to detect difference between stimli basically formula of two stilumi tocchange

Question 23

Short wavelength

Answer 23

High pitch sounds blue color

Question 24

Long wavelength

Answer 24

Low pitch sounds red color

Question 25

Amplitude big

Answer 25

Loud sounds bright colors

Question 26

Small amplitude

Answer 26

Short sound dull colors

Question 27

Cornea

Answer 27

Help to direct light into the eye

Question 28

Lens

Answer 28

Focuses the light

Question 29

Accomodation

Answer 29

Process of changing the curvature of the lens to focus light rays onto the retina

Question 30

ear canal

Answer 30

Directs sound in to the ear