Psy Ch 4 Sec 1 and 2 Perception and Visual Senses

the raw data of experience; sensory stimulation; example are eyes only register light energy and ears only register wave energy

• Sensation
• Retina
• Cones
• color blindness

the mental process of sorting, identifying, and arranging raw sensory data into meaningful patterns; Ex. how we distinguish between music and crying, how we take light and form a tree

• perception
• Iris
• color blindness
• light adaptation

the minimum difference between two stimuli required for detection 50 percent of the time

• difference threshold
• visual acuity
• Adaptation
• Lens

small opening in the center of the iris; color part of the eye

• Pupil
• Iris
• afterimage
• color blindness

process by which our senses adjust to different levels of stimulation; in addition there are two types-light and dark; the sensitivity of rods and cones change accord how much light is available

• Adaptation
• Pupil
• light adaptation
• Iris

the color part of the eye; made of muscle that contracts/relaxes to control the size of the people allowing light to enter the eye

• Iris
• visual acuity
• Lens
• Sensation

transparent part of the eye behind the iris; focuses light on the retina; change shape to focus on objects;-if object is closed, muscles attach to the land contract to make lens around,-if object is far away, the muscles pull to flatten the lens

• Lens
• Sensation
• Adaptation
• blind spot

visual receptor cell; located in retina; 120 million in each eye; respond to varying degrees of light and dark; chiefly responsible for night vision and perception of brightness

• Rods
• afterimage
• Adaptation
• absolute threshold

the light-sensitive inner lining of the back of the eyeball; contains receptor cells

• Retina
• Sensation
• afterimage
• absolute threshold

visual receptor cells; located in retina; 8 million in each eye; works best in bright light; chiefly responsible for viewing color; greatest density in the fovea

• Cones
• Lens
• light
• absolute threshold