Cognition Flashcards
(45 cards)
The Pinna
The outer ear
The typanic membrane
The ear drum
-Hammer
-Anvil
-Stirrup
Ossicles
Receives sound vibrations from the ossicles
Oval window
Receptor cells in the cochlea
Hair cells
The nerve that carries sound information from the ears or he temporal lobes of the brain
Auditory Nerve
-A tube that connects the middle ear to the back of the nose
-It equalizes pressure between your nose and the air outside
Eustachian Tube
Organs in the inner ear used in sensing body orientation and balance (vestibular sense)
Semicircular canals
-Relies on fluid in the semi circular canals of the inner ear
-Spinning in circles disrupts the fluid
Vestibular sense
The process by which our sensory system and nervous system receive stimuli from the environment
Sensation
5 senses
-Visual (eyes)
-Audio (ears)
-Cutaneous/tactile (touch)
-Olfacation (smell) (nose)
-Gustation (taste) (tongue)
-The process of organizing & interpreting sensory information
-How we recognize, interpret, & organize our sensations
Perception
-Information processing that focuses on raw material entering through the eyes, ears, & other organs of sensation
Bottom-up processing
-Information processing that focuses on expectations & experiences in interpreting incoming sensory info
Top-down processing
-An edge or a boundary
-For sensations, it is the point where you either sense a stimulus or dont
Absolute Threshold
-The minimum difference that a person can detect between 2 stimulus 50% of the time
Just Noticeable Difference
-The greater the magnitude of the original stimulus, the larger the difference must be in order to get noticed
Webers law
-Focusing conscious awareness on a particular stimulus to the exclusion of others
-The ability to focus on one stimulus at a time
-Allows a person to function in a world filled with many stimuli
Selective attention
-Cones are pre-set to be sensitive to red, green, & blue. All the colors that we see are combinations of those 3 colors
The Trichromatic Theory
-Color blindness is due to a lack of one of the 3 types of cones
-Usually the red or green receptors are missing
-It is inherited
Dichromatism
When a person has 1 or no functioning cones in their eyes (complete color blindness)
Monochromatism
-Explains after images
-Sensory receptors in the retina come in pairs:
> Red and green
> Yellow and blue
> Black and white
Only one side is on at a time
Opponent process theory
-A sounds highness and lowness in tone
-Dependent on the frequency of the sound wave
The higher the frequency the higher the ___
Pitch
-Different frequencies in sound waves cause vibrations at different places Places in the cochlea
Place Theory