Sensory Perception

Question 1

horizontal cells

Answer 1

assist bipolar cells by processing and organizing visual info

edges of objects and visual contrast can discerned

Question 2

temporal fibers

Answer 2

don’t cross paths

Question 3

optical chiasm

Answer 3

where nasal optic fibers cross paths

nasal optic fibers cross to the opposite hemisphere

Question 4

optic tracts

Answer 4

the pathways used by optic fibers after optic chaism

Question 5

magnocellular

Answer 5

movement

Question 6

parvocellular

Answer 6

fixed objects

Question 7

visual cues

Answer 7

allow perceptional organization
depth
form
motion
constancy

Question 8

binocular cues

Answer 8

two eyes

give the sense of depth

Question 9

retinal disparity

Answer 9

eyes are 2.5 inches apart which allow people to get slightly different views of objects
give idea of depth

Question 10

convergence

Answer 10

gives depth based on how much eyeballs are turned

things are far away- muscles of yes relaxed

things close to us- muscle contract

Question 11

monocular cues

Answer 11

give form to an object…relative size

closer object is, bigger it appears

interposition (overlap)- perception that one object is in front of another.

relative height- higher is further away

motion parallax- closer=faster

Question 12

interposition

Answer 12

overlap
perception that one object is in front of another
object in front is closer

Question 13

relative height

Answer 13

things higher are farther away

things lower are closer

Question 14

shading and countour

Answer 14

using light and shadows to perceive form (depth and contours)
crater/mountain

Question 15

sense of motion

Answer 15

things father away move slower

closer=faster

Question 16

motion parallax

Answer 16

relative motion
things farther away move slower
things closer move faster
monocular cue

Question 17

monocular of constancy

Answer 17

perception of object doesn’t change even if image cast on retina is different.
different types of constancy include shape constancy, color constancy

Question 18

shape constancy

Answer 18

changing shape still maintains the same shape perception

Question 19

size constancy

Answer 19

larger=closer but we still think it is same size

Question 20

hearing adaption

Answer 20

inner ear muscle- higher noise-muscle contract

dampens vibration in inner ear to protect ear drum

Question 21

touch

Answer 21

temp receptors desensitize over time

Question 22

smell

Answer 22

desensitized receptors in your nose to molecule sensory information over time

Question 23

proprioception

Answer 23

sense of position in space

sense of balance where you are in space

Question 24

sight

Answer 24

up or down regulation to light intensity

Question 25

down regulation of sight

Answer 25

light adaptation when bright out, pupils constrict so less light enters back of eye desensitization of rods and cones become desensitized to light

Question 26

up regulation of sight

Answer 26

dark regulation pupils dilate rods and cones start synthesizing light sensitive molecules

Question 27

automatic processing

Answer 27

simple and familiar tasks

Question 28

controlled processing

Answer 28

new and advanced tasks

Question 29

webers law

Answer 29

threshold when one person can detect a just noticeable difference delta I/I =k constant

Question 30

piano tuner listens to tuning machine and notices that frequency is rising when it rises from 25 to 27. if later the machine begins emitting sounds with decreasing frequencies beginning at 200 Hz, when will the tuner notice that frequency has dropped?

Answer 30

webers law=delta I/I 2/25 = about 8% at 200 it would be 8% so about 200-16 = 184 Hz

Question 31

absolute threshold of sensation

Answer 31

minimum intensity of stimulus needed to detect particular stimulus 50% of time can be influenced by expectations, experience familiarity motivation alertness

Question 32

subliminal stimuli

Answer 32

stimuli below the absolute threshold of sensation

Question 33

somatosensation

Answer 33

receive information about the types of somatosensation intensity timing location

Question 34

types of somatosensation

Answer 34

thermoception mechanoception nociception proprioception

Question 35

thermoception

Answer 35

temperature

Question 36

mechanoception

Answer 36

pressure

Question 37

nociception

Answer 37

pain

Question 38

proprioception

Answer 38

position | balance

Question 39

intensity

Answer 39

how fast neurons fire for us to notice fast-low intensity fast=high intensity

Question 40

timing | 3 types

Answer 40

neuron encodes 3 ways for timing non-adapting- neuron consistently fires at constant rate slow adapting- neuron fires in beginning of stimulus and calms fast adapting- neuron fires as soon as stimulus start then stops firing