PSY Test Two Flashcards
Six human senses
Vision, hearing, balance, touch, taste, smell
Process in which a sense organ changes physical energy into electrical signals that become neural impulses which can then be sent to the brain for processing
Transduction
The decreasing response of the sense organs the more one is exposed to a continuous level of stimulation
Adaptation
Meaningless pieces of information that result when the brain processes electrical signals that come from sense organs
Sensations
Meaningful sensory experiences from combined sensations
Perceptions
One particular segment of the electromagnetic spectrum that we can see because these waves are the right length to stimulate receptors in eyes
Visual spectrum
The rounded transparent covering over the front of your eye
Cornea
Round opening at the front of your eye that allows light waves to pass into the eye’s interior
Pupil
The muscle that allows the pupil to grow larger or smaller
Iris
A circular muscle that surrounds the pupil and controls the amount of light entering the eye
Iris
A transparent oval structure whose curved surface bends in focuses lightwaves into an even narrower beam
Lens
This is located at the back of the eyeball and is a thin film that contains cells that are extremely sensitive to light
Retina
What causes how good you see
The shape of your eyeballs
This results with the eyeball is too long. near objects are clear but distant objects are blurry
Nearsightedness
This occurs when the eyeballs are too short and distant objects are clear but near objects are blurry
Farsightedness
How many layers of cells does the retina have
Three
The back layer of the retina has two kinds of what
Photoreceptors
This structure carries impulses toward the brain
Optic nerve
Each eye has about this many rods and most of them are located in the retinas periphery
120 million
The chemical in rods
Rhodopsin
These are photoreceptors that contain a single chemical and allow us to see only black white and shades of gray
Rods
are photoreceptors that contain three chemicals Called opsins and these allow us to see color
Cones
The blank does some initial processing of vision
Thalamus
The man whose research laid the basis for a theory of how you see colors called the trichromatic
Thomas young
Thomas Young is associated with what theory
Trichromatic
This theory says that there are three different kinds of cones in the retina and each cone contains one of three different light-sensitive chemicals called opsins
Trichromatic
A visual sensation that continues after the original stimulus is removed
Afterimage
This theory says that ganglion cells in the retina and cells in the thalamus of the brain respond to two pairs of colors red and green, and blue and yellow
Opponent- process
The inability to distinguish two or more shades in the color spectrum
Color blindness
These people have total colorblindness . Their world look like black-and-white movies
Monochromats
These people usually have trouble distinguishing red from green because they have just two kinds of cones
Dichromats
The stimuli for hearing
Soundwaves
This is your subjective experience of the sounds intensity
Loudness
This is our subjective experience of a sound being high or low
Pitch
A unit to measure loudness
Decibel
The Outer ear consists of these three structures
External ear, auditory canal, and tympanic membrane
In oval-shaped structure that protrudes from the side of the head
External ear
A long tube that funnels soundwaves down its length so that the waves strike a taut membrane
Auditory canal
Another name for eardrum
Tympanic membrane
A bony Cavity that is sealed at each end by membranes
Middle ear
The three tiny bones in the middle ear
Ossicles
The three ossicles in order of when they function
Hammer, anvil, stirrup
The two main structures of the inner ear
Vestibular system and cochlea
Miniature cells that stick up from the cochlea’s bottom membrane
Hair cells
The cochlea’s bottom membrane is called
Basilar
A band of fibers that carry nerve impulses to the auditory cortex of the brain for processing
Auditory nerve
This theory applies only to low pitched sounds and it says that the rate at which their impulses reach the brain determines how low the pitch of the sound
Frequency theory
This theory says that the brain determines medium to higher pitched sounds on the basis of the place on the basilar membrane where maximum vibration occurs
Place theory
The vestibular system which is located above the cochlea in the inner ear includes how many semicircular canals
Tree
This system uses information on the position of your head to indicate whether you’re standing on your hands or your feet
Vestibular system
This disease results from a malfunction of the semicircular canals of the vestibular system
Meniere’s disease
This results from malfunction of the semicircular canals of the vestibular system and the symptoms are dizziness and nausea
Vertigo
This is called a chemical sense because the stimuli are various chemicals
Taste
The five basic tastes
Sweet, salty, sour, and bitter, umami
This taste is A meaty – cheesy taste found in cheese meat and pizza
Umami
These are shaped like miniature onions and are the receptors for taste
Taste buds
Someone that has double the amount of the normal taste buds
Supertaster
This is when we combine the sensations of taste and smell
Flavor
A chemical sense because it’s stimuli are various chemicals that are carried by the air
Olfaction
These are the receptors for smell and are located into 1 in.² patches of tissue in the uppermost part of the nasal passages
Olfactory cells
This sense includes pressure, temperature, and pain
Touch
How many layers of skin do we have?
Three
This receptor has distinctive layers like a slice of onion and it is highly sensitive to touch and it is the only receptor that responds to vibration and adapts very quickly
Pacinian corpuscle
This is triggered by the presence of a variety of contaminated or offensive things including foods body products and Gore
Disgust
An unpleasant sensory and emotional experience that may result from tissue damage, one’s thoughts or beliefs, or environmental stressors
Pain
This theory of pain says that nonpainful nerve impulses compete with pain impulses in trying to reach the brain
Gate control theory
A procedure in which I trained practitioner inserts thin needles into various points on the body surface and then manually twirls or electrically stimulates the needles
Acupuncture
This kind of deafness can be caused by wax in the auditory canal, injury to the tympanic membrane, or malfunction of the ossicles
Conduction
This kind of deafness can because by damage to the auditory receptors, which prevents the production of impulses, or by damage to the auditory nerve, which prevents nerve impulses from reaching the brain
Neural
A miniature electronic device that is surgically implanted into the cochlea and changes soundwaves into electrical signals that are fed into the auditory nerve which carries them to the brain for processing
Cochlear implant
gamma rays, x rays, and uv waves are blank waves
short
radar, fm, tv, and am waves are blank waves
long
what structure performs transduction in a human
eyes
7 steps of vision ilcpilr
image reversed, light waves, cornea, pupil, iris, lens, retina
rounded transparent cover over eye that gathers light and narrows it
cornea
absorbs light and dilates and contracts due to the iris muscle
pupil/iris
focuses light waves into an even narrower beam
lens
Photoreceptor that has one chemical rhodopsin and only needs a little light to be activated
Rods
film that has photoreceptor cells that absorb light waves and start transduction
retina
Chemical in rods
Rhodopsin
Photoreceptors that contains three chemicals called opsins and need bright light to work
Cones
Chemicals in cones
Opsins
Funnels sound
External ear and auditory canal
Vibrates and sends them to middle ear
Tympanic membrane
Attached to the back of tympanic membrane
Hammer
Receives vibrations from hammer
Anvil
Sends vibrations to inner ear
Stirrup
Transforms vibrations into nerve impulses
Cochlea
Semi circular canals above cochlea that are involved in balance because its filled with fluid
Vestibular system
a point above which a stimulus is perceived and below which it is not perceived. also determines when we first become aware of a stimulus
threshold
The idea that there is an absolute threshold was proposed by
gustav fechner
first defined the absolute threshold as the smallest amount of stimulus energy (such as sound or light) that can be observed or experienced
gustav fechner
is the intensity level of a stimulus such that a person will have a 50% chance of detecting it.
absolute threshold
has an intensity that gives a person less than a 50% chance of detecting the stimulus.
subliminal stimulus
or JND, refers to the smallest increase or decrease in the intensity of a stimulus that a person is able to detect.
just noticeable difference
states that the increase in intensity of a stimulus needed to produce a just noticeable difference grows in proportion to the intensity of the initial stimulus.
weber’s law
at higher sound intensities, you need a blank difference to detect a just noticeable difference between the loudness of two sounds
larger
at lower intensities, you need a blank difference in order to detect a just noticeable difference between the loudness of two sounds
small
is our first awareness of some outside stimulus
sensation
is the experience we have after our brain assembles and combines thousands of individual, meaningless sensations into a meaningful pattern or image
perception
first step of perceptual process activates sense receptors in the eyes, ears, skin, nose, or mouth
stimulus
second step of perceptual process. The light waves are absorbed by photoreceptors, which change physical energy into electrical signals
transduction
third step of perceptual process
primary brain areas
fourth step of perceptual process
association areas of brain
believed that you add together hundreds of basic elements to form complex perceptions.
structuralists
believed that our brains follow a set of rules that specify how individual elements are to be organized into a meaningful pattern, or perception.
gestalt psychologists
which were identified by Gestalt psychologists, specify how our brains combine and organize individual pieces or elements into a meaningful perception.
rules of organization
states that, in organizing stimuli, we tend to automatically distinguish between a figure and a ground
figure ground rule
states that, in organizing stimuli, we group together elements that appear similar.
similarity rule
states that, in organizing stimuli, we tend to fill in any missing parts of a figure and see the figure as complete.
closure rule
states that, in organizing stimuli, we group together objects that are physically close to one another.
proximity rule
states that stimuli are organized in the simplest way possible.
simplicity rule
states that, in organizing stimuli, we tend to favor smooth or continuous paths when interpreting a series of points or lines.
continuity rule
refers to our Tendency to perceive sizes, shapes, brightness, and colors as remaining the same even though their physical characteristics are constantly changing
perceptual constancy