Chapter 3 Flashcards
Receptor cell
cell in sense organ that picks up stimuli
Adaptaion
you get used to a certain level of stimulation
Absolute threshold
minimum level stimuli must reach to be noticed
Difference threshold
how much change is needed in a stimuli to be noticed
Subliminal perception
Messages or events that occur beneath the absolute threshold can be felt, and it influences behavior/ideas
ESP
extra sense some people claim to have
Clairvoyance
ability to sense something far away
Telepathy
ability to sense someone else’s thoughts
Precognition
ability to sense something in the future
Psychokinesis
ability to manipulate objects with mind
Cornea
membrane over front of eye
Pupil
in center of iris, lets light into eye
Iris
colored part of eye
Lens
inside pupil, focuses light into retina
Retina
has receptor cells, picks up light
Fovea
part of retina that is center of eyesight
Blind spot
optic nerve connects here, so no receptor cells
Rods
pick up light intensity
Cones
pick up colors
Trichromat
all functional cones
Dichromat
yellow-blue or red-green colorblind
Monochromat
no color
aques humor
behind retina, provides oxygen to cornea and removes stuff from eye
liliary muscles
around lens, push and pull to let eyes focus
uitreas humor
jelly inside eye
how much more common is color blindness in men than women
about 10x
sensation
experience of sensory stimulation, awareness of stimuli
perception
process of creating meaningful patterns from sensory information
Webber’s law
principle that jnd for a sense is a constant fraction/proportion of the stimulation being judged
pinna
outer part of ear
external auditory canal
funnel sound waves into ear
tympanic membrane
eardrum
middle ear made of
malleus, mas, stapes
chochlea
snail. fluid and hair follicles, transmits sound waves
pitch
sound tone
amplitude
wave magnitude
overtones determine
timbre
place theory
brain determines pitch by where message is strongest in ear
frequency theory
frequency perceived by nerve impulses
volley principle
nerve cells firing in sequence
olfactory epithelium
in sinus cavity, receptor cells that smell
anosmia
can’t smell
tastes
salt, sweet, bitter, sour, umami
papillae
bumps on tongue, have taste buds
kinesthetic senses do wht
position of limbs, control body movement
vestibular senses do what
spatial awareness - forward/backward, up/down
phermones detected by
vomeronasal organ
Krause bulbs
detect cold
Ruffini corpuscle
detect heat
Meissoner corpuscle
detect pressure
phantom limb syndrome
sensation after amputation, > 2/3 of amputees
perceptual constancy
objects seen as unchanging during stimulation
monocular
one eye
linear perspective
distance and depth with one eye
stereoscope vision
clear depth and distance, two eyes
retinal disparity
combine both eyes’ images
autokineic illusion
perceived motion from unmoving object
phi phenomenon
lights flashing seen as moving
stroboscopic omtion
flashing makes a picture
proximity
grouping
similarity
patterns
closure
shapes
continuity
combination