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The Senses
Unit 5
43
Psychology
12th Grade
10/16/2013

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Term
Senses
Definition
taste, smell, hearing, vision, and touch
Term
Sensation
Definition
the stimulation of sensory receptors and the sending of the information to the CNS
Term
Perception
Definition
the process through which we interpret sensory stimulation- it reflects learning, expectations, and attitudes
Term
Absolute threshold
Definition
the weakest amount of stimulus that can be sensed. It varies some from person-to-person
Term
Difference threshold
Definition
the minimum amount of difference that can be detected between two stimuli
Term
Sensory adaptation
Definition
the process by which we become more sensitive to weak stimuli and less sensitive to unchanging stimuli. For ie, the eyes adjusting in a dark theatre- living in a city and not paying attention to all the traffic noise
Term
Vision
Definition
gives you information onesize, shape, location, texture, color, and distance
Term
Pupil
Definition
which is the opening that regulates the amount of light allowed into the eye. They look like solid black dots, but are actually holes
Term
Lens
Definition
One light goes through the pupil, it hits it which focuses light and changes its thickness to adjust the focus.
Term
Retina
Definition
The image is focused onto it which contains two types of receptor cells
Term
Rods
Definition
which are sensitive to light
Term
Cones
Definition
which are sensitive to color
Term
Photoreceptors
Definition
neurons that gather the information to be sent to the brain
Term
Visual acuity
Definition
sharpness of vision
Term
Optic nerve
Definition
Vision impulses travel to the brain by the...
Term
Color blindness
Definition
when a person’s cones do not function properly. Most do see some color- few are totally color blind. 8% of men and less than 1% of women- heredity causes a defect in the cones and women tend to be carriers
Term
Afterimage
Definition
this is a color’s complementary color, its opposite
Term
Binocular fusion
Definition
The combination of two images into one
Term
Retinal disparity
Definition
your eyes are in 2 different places...this helps you to see 3D
Term
Hearing
Definition
sound is made by vibrations in the air
Term
Pitch
Definition
How high or low a sound is...sound waves are determined by it
Term
Auditory nerve
Definition
Signals are sent through this to the brain
Term
Decibels
Definition
Loudness is measured by this...
Term
Eardrum
Definition
a thin membrane that vibrates when sound hits it and transmits the sound to 3 small bones: hammer, anvil, & stirrup. They vibrate and transmit sound to the inner ear
Term
Cochlea
Definition
a tube that moves in response to the fluid vibration inside it and the impulses are sent through the auditory nerve
Term
Conductive deafness
Definition
Damage to the middle ear
Term
Sensorineural deafness
Definition
Damage to the inner ear and auditory nerve, usually caused by very loud, extended noise &/or sickness
Term
Vestibular system
Definition
Liquid in 3 semicircular canals in the inner ear. When the liquid moves around it tells you are off balance
Term
Smell and taste
Definition
Chemical senses
Term
Olfactory nerve
Definition
he molecules in the air must hit the inner membrane in the nose & then information is sent via this to the brain
Term
Smells are comprised of 6 qualities
Definition
Flowery, fruity, spicy, resinous, burnt, and putrid
Term
Taste has 4 qualities
Definition
sour, salty, bitter, and sweet
Term
Skin senses (touch)
Definition
pressure, temperature
Term
Referred pain
Definition
feeling pain away from its actual source
Term
Phantom limb pain
Definition
being able to feel pain or other sensations from amputated area
Term
Kinesthesis
Definition
the sense of movement and body position. Without this you would always have to watch everything you’re doing
Term
Closure
Definition
Tendency to see a complete or whole figure even when there are gaps
Term
Figure-ground perception
Definition
The ability to see the difference between a figure and a background
Term
Law of Common Fate
Definition
When you see things moving together you perceive them as belonging together
Term
Motion parallax
Definition
for objects to seem to move forward or backward depending on how far away they are from the viewer
Term
Illusions
Definition
perceptions that are misrepresentations of reality
Term
Perceptual constancy
Definition
size, color, brightness, and shape
Term
Extrasensory perception (ESP)
Definition
receiving information about the world through channels other than the normal senses
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