chapter 6 Flashcards
What is the difference between sensation and perception
Sensation is the process of receiving stimulus energy from world
Perception is process of interpreting stimulus energy
What is an absolute threshold
minimum amount of stiulation necessary to detect the stimulus 50% of the time
What is subliminal stimulation
Stimulation that occurs below the absolute threshold for conscious awareness
How powerful are the effects of subliminal stimulation
Not very
What is a difference threshold
Minimum amount of stimulus CHANGE necessary to DETECT THE CHANGE 50% of the time
What is transduction
Process by which stimulus energies are translated into neural messages
What is the stimulus energy for vision
Light waves
What are the steps of transduction for vision
Light enters through the cornea, Then passes through the pupil, light passes through the lens, image projected into retina, receptor cells send info down the optic nerve to the thalamus
What is the iris
Colored muscle that adjusts light intake
What are the receptor cells for vision and where are they
Retina, tissue in the back of eye
why do nocturnal animals see better than us in the dark but can’t see color
They have more rods
What is the stimulus energy for hearing
Sound waves
In the outer ear soundwaves are traveled through the ______, travel along the ______ ______, then bump up against the _____
Pinna, auditory canal, tympanic membrane
What is the tympanic membrane
eardrum
How does sound get transmitted through the middle ear
vibrations of the eardrum set in motion three tiny bones
In the inner ear, the movement of the oval window causes what?
Vibrations
When fluid in the cochlea is set in motion, it causes what to happen?
Hair cells bend
What are the receptor cells for hearing
Hair cells
What are the 4 distinct skin senses
Pressure, warmth, cold, pain
What are two ways we can reduce pain
Massages or acupuncture
What is the stimulus energy for taste
Chemical particles
What are the 5 taste sensations
Sweet, salty, bitter, sour, umami
Why are farts not funny
You are inhaling chemical fart particles
Where does olfactory information go first in the brain? What are the implications of this?
Olfactory nerve then limbic system, sense of smell linked to memory
