Colored part of the eye; bright light causes pupil to contract, dim light causes pupil to expand

Small opening in which light passes

Lining in the back of the eye that contains receptor cells

Respond to light & dark, NOT color

Respond to light, dark AND color; works mainly in daylight

• Visual experience specified by color names and related to the wavelength of light.

• Lightness and luminance; the visual experience related to the amount of light emitted from or reflected by an object.

• Vividness or purity of color; the visual experience related to the complexity of light waves.

• Visual cues to depth or distance that require the use of both eyes.

Turning inward of the eyes, which occurs when they focus on a nearby object

Sound waves enter the ear through....

Thin membrane inside ear

Ear Drum is not attached to what bone

Ear Drum bones vibrate and send sound to what

Sends impulses to the brain

Nose receptors that receive vapors are located where

How many smell receptors are in the nose

How many neurons do we loose a year

Knoblike elevations on the tongue, containing the taste buds (Singular: papilla)

Nests of taste-receptor cells

Who is more sensitive to smell

Taste receptors are where on the bud

How many tastebuds do we have

Not a basic taste

Largest sense organ

• The smallest quantity of physical energy that can be reliably

• detected by an observer 50% of the time

• The smallest difference in stimulation that can be reliably (50% of the time)

• detected by an observer when two stimuli are compared 

• Also called Just Noticeable Difference (JND)

• Even though these images cast shadows of different shapes, we still see the quarter as round

• The accurate perception of objects as stable or unchanged despite changes in the sensory patterns they produce.

Instinctively perceive objects as either being in the foreground or the background. They either stand out prominently in the front (the figure) or recede into the back (the ground)

Things that are close together seem more related than things that are spaced farther apart

Transparent part of eye; focuses light onto retina

Points that are connected by straight or curving lines are seen in a way that follows the smoothest path. In other words, elements in a line or curve seem more related to one another than those positioned randomly

Similar things tend to appear grouped together

We perceive elements as belonging to the same group if they seem to complete some entity

 Our brains often ignore contradictory information and fill in gaps in information