Psych Exam #2 Flashcards
(40 cards)
Sensation
process by which our sensory receptors and nervous systems receive and represent stimulus energy
Perception
a process of organizing and interpreting sensory information
Bottom up Processing
interpretation of information is unaffected by knowledge and outside expectations
Top Down Processing
Information interpreted differently depending on knowledge and expectations
Transduction
sensory receptors translate physical stimulation into neural signals
Absolute Threshold
minimum stimulation needed to detect a particular stimulus
Subliminal Stimuli
stimuli that are detectable less than 50% of the time
Example of subliminal messages in music?
Backwards masked messages (BMM)
What is a BMM (Backwards masked message)
messages hidden in music which require the listener to play the song backwards in their heads while listening to the song as they normally would
Difference Threshold
minimum difference between two stimuli that a subject can detect 50% of the time
Webers Law
to precieve a difference between two stimuli they must differ by a constant proportion
5 Senses
Vision, Taste, Touch, Smell, Hearing
Electromagnetic Spectrum
Change in the shape of lens
Retina
inner surface of eye
light sensitive
contins rods and cones
Cones
used for daylight or well-lit conditions
used for fine detail and color vision
found near center of retina on the fovea
Rods
detects black, white, and gray
used for twilight or low light
found on peripheral of the retina
Blind Spot
No receptor cell located there
Trichromatic (three color) Theory and what are the color
Three different retinal color receptors - red, blue, green
Opponent Process Theory
Three types of color opponent cells
black-white
red-green
blue-yellow
After images
visual illusion in which retinal impression remain constant after the removal of a stimulus
Precognition
perceive future events
psychokinesis
direct mental influence over physical objects
telepathy
mind to mind conversation
Perceptual Set
a mental predisposition to perceive one thing and not another