Psychology Ch. 6/3 Flashcards
Refers to how our sense receptors and nervous system represent our external environment
Sensation
This type of processing begins with sense receptors and works up to higher processing regions
Bottom-Up Processing
Refers to how we mentally organize and interpret sensory information
Perception
Type of processing in which we create meaning from sensory input by drawing on our experiences and expectations, (info processing).
Top-down processing
Three Steps to all sensory systems
Receive, Deliver, Transform
Converting one form of energy into another that our brain can use
Transduction
A point at which we detect a stimulus 50% of the time
Absolute threshold
The point where we detect a stimulus less than 50% of the time
Subliminal
Unconscious activation of certain associations
Priming
The ‘just noticeable difference’. The minimum difference a person can detect in any two stimuli, 50% of the time.
Difference threshold
Our diminishing sensitivity to an unchanging stimulus
Sensory Adaptation
Distance from one wave peak to the next, determines HUE
Wavelength
The amount of energy in light wave, determines by amplitude, influences BRIGHTNESS
Wave Intensity
The eye’s small opening
Pupil
A melanin colored muscle that dilates or constricts the pupil
Iris
Part of the eye that focuses incoming rays
Lens
Multilayered tissue lining the back of the eye
Retina
Detects black, white, and grey, is light sensitive and dull
Rods
Detects color and fine detail, functional in daylight
Cones
Nerve that carries information to the brain (occipital lobe)
Optic nerve
Where the optic nerve leaves the eye, no receptor cells here.
Blind Spot
Near is clear, far is blurry
Myopia (Nearsightedness)
Near is blurry, far is clear
Presbyopia (Farsightedness)
Decreased ability to see color differences
Color-Vision Deficiency
What is the stimuli for hearing?
Sound waves
What do amplitude and frequency determine for SOUND
Amp: Loudness, Frequency: Pitch
What makes up the outer ear?
The auditory canal and the eardrum
What makes up the Middle ear?
Hammer, anvil, and stirrup bones (they move like a piston)
What makes up the Inner ear?
Cochlea, oval window, basilar membrane, then eventually the auditory complex.
Damage to the cochleas’s receptor cells or damage to the auditory nerves due to disease, aging, prolonged exposure to loud noises, or congenital defects.
Nerve Deafness
Mechanical device that translates sounds into electrical signals.
Cochlear implant
damage to the mechanical system that conducts sound waves to the cochlea due to earwax, ruptured eardrum, cysts, tumors, etc.
Conduction hearing loss
Four sensations of touch:
Pressure, Warmth, Cold, Pain
The Five Tastes:
Sweet, Sour, Salty, Bitter, and Umami (Savory).
How many smell receptors are located at the top of each nasal cavity?
5 million
Smell receptor cells send messages to the olfactory bulb and ultimately the…
Temporal Lobe
The sense of position and movement of individual body parts
Kinesthesia