CH 5 pt 1

the detection of physical energy by our
sense organs( the process where our 5 senses recieve and relay physical stimuli)

the brain’s interpretation of raw
sensory data

vision, hearing, smell(oflaction), taste(gustation), touch(tactile perception

the minimum amount of stimuli for us to be able to detect it 50% of the time.

Ex: if i put a teaspoon of sugar in a gallon of water people will be able to detect the sweetness about half the time/if i spray perfume once in a 3 bedroom apartment some people will be able to smell it while others cant

the smallest difference between 2 stimuli that's noticable about 50% of the time

Ex: tasting two different ice creams but noticing that one is only slightly sweeter

your receptors become less responsive/ignore stimulus that isn't changing

ex: this is why you go noseblind to things after a while. You adapt to the constant, unchanging smell.

your brain stops attending to constant information

Different from sensory adaptation because you can still perceive it you've just decided that its not important

Constant movement of the eyes
-prevents sensory adaptation to visual stimuli

selection, organization, interpretation

What information is most important
• Selective Attention helps us ignore irrelevant information

Begin to structure, or make mental representation of what you
are attending to
• Constancy, Depth

Assigning meaning to mental representation

the detection of physical energy by our
sense organs( the process where our 5 senses recieve and relay physical stimuli)

uses previous knowledge to interpret information

Next visual layer; clear, watery fluid
• Supplies nourishment to the eye

Round muscle (the colored part of the eye)
• Changes the size of the pupil, letting more or less light into the
eye; helps with focusing

Hole where light enters the interior of the eye

Clear structure behind the iris, suspended by muscles
• Finishes the focusing process begun by the cornea

Jelly-like fluid
• Nourishes the eye and gives it shape

final stop for light in the eye

Photoreceptor cells that respond to various light waves
• Bipolar cells – Transmit signals from photoreceptors to ganglion
• Ganglion cells – Sends signals to the brain

Changing of (light) into a neural signal
– Happening in the retina of the eye

hue/color

brightness

lack of functioning blue cones

cooler colors like purple and blue

warmer colors like red and orange

states that all colors can be made by a mixture of red green and blue

were able to see color because different wavelenghts of light stimulate combinations of red, green, and blue

there are processes that inhibit one color pair while stimulating the other

Cells can become fatigued, which could explain afterimages

for example, when yellow is being shown blue is inhibited

cons help you see color vision while rods help you see noncolor vision

nearsighted, poor distance vision

Focal point falls short of the retina

farsighted, poor close vision

Focal point is behind the retina

• Lens stiffens and can no longer accommodate, happens gradually as we age

where a person’s eyes either have no cones or have cones that
are not working at all

lack of functioning red cones

lack of functioning green cones

lack of functioning blue cones