sensation
what is the defenition of sensation
the stimulation of sensory receptors and the sensory information sent to the central nervous system (spinal cord & brain)
iris
what is perception
psychological process by which we interpret sensory stimulation.
what is the eardrum
thin membrane that vibrates when sound waves strike it
the black center of the eye - controls the amount of light that enters the eye
what is absolute threshold
the weakest amount of a stimulus you can sense.
what is light measured in
wave lengths
sound perception and loudness depends on these 4 things
frequency, amplitude, timbre, stimulated hairs
what is the auditory nerve
part of the brain that transmits sounds to the cerebral cortex
what percentage of people are red-green blind
99% of color blind people are red-green color blind
what was our example of absolute threshold
The Princess & The Pea
what is a blind spot
where the optic nerve meets the back of the eye; does not have rods or cones so nothing can be seen
what is a just noticeable difference
the minimum amount of difference that can be detected between two stimuli
which are these bones connected too ear-hammer, anvil, and stirrup
eardrum
what helps people with cognitive deafness
what is top-bottom processing
processing is the brain’s use of existing knowledge, beliefs, and expectations to interpret the sensory stimulation.
allow us to see in black and white; sensitive to light brightness
what is transduction
Conversion of one form of energy into another
what is the middle - ear
amplifies sounds; therefore damage to it prevents people from hearing sounds that are not loud enough
what is the example we learned of JND
Volume 3 to 6 might would be 3 volume levels and might the smallest difference you can notice
what is bottoms up processing
the processing of sensory information as it enters the sensory structures and travels to the brain.
which part of the eye contains the receptor rods and cones
the retina
what is backmasking
a recording technique in which a sound or message is recorded backward onto a track that is meant to be played forward.
what occurs when we do not perceive certain sound frequencies
Sensorineural Deafness
what is the cochlea
bony tube that contains fluids as well as neurons that move in response to the vibrations of the liquids