Psych/Soc Flashcards
_______________
- smallest magnitude of a stimulus identifiable 50% of the time
Sensory threshold
_______________
- Smallest noticeable change in baseline stimulus
Just noticeable difference (jnd)
_______________ law
- The just noticeable difference between a baseline stimulus level & a new level varies in proportion to the baseline stimulus
- Turning a low sound up 1 db is more noticeable than turning a loud sound up 1db
Webers law
_______________ theory
- competing stimuli interfere with the ability to identify the presence or absence of a target stimulus
Signal detection theory
_______________
- under continued or extreme stimulation, sensory receptors undergo physiological changes that affect the degree of sensitivity
Sensory adaptation
_______________ theory
- brain processes sense input in multiple ways at 1 time
Parallel processing theory
_______________ system
- complex system integrating many bodily sensations (temperature, touch, proprioception, pain)
Somatosensory system
_______________
- awareness of body position
Proprioception
_______________
- identifies body positioning & movement
Kinesthetic sense
_______________
- responsible for balance & orientation
Vestibular system
_______________
- registered through chemoreceptors & taste buds
Taste
_______________
- registered through chemoreceptors & olfactory cells
Smell
_______________
- excreted chemical compounds that elicit a specific response (species specific)
-EX: mark territories, signal food trails, warn of danger, indicate sexual receptivity, & increase maternal bond
Pheromones
_______________
- interpretation of the information received from senses
Perception
_______________
- allows perception of an object in a consistent way
Perceptual constancy
_______________
- ability to determine how far away an object is
Depth perception
_______________
- allows perception of visual outlines as constituting an object regardless of changes in size, shape, & environment
Form constancy
_______________
- visual cues & vestibular senses determine if an object is moving
Motion
_____________ principles
- The brain organizes small bits of information into larger patterns
Gestalt principles
_______________ processing
- using small bits of information to develop a larger picture
Bottom-up processing
_______________ processing
- incorporating experience, knowledge, & expectations to interpret lower-level bits of information
Top-down processing
_______________
- a state of focused awareness on a given set of stimuli
Attention
_____________ attention
- The process of filtering out extraneous stimuli to direct attention onto the object of interest
Selective attention
_____________ attention
- placing attention onto more than 1 objects simultaneously such that the attention to each object is diminished
Divided attention