Exam 2 Flashcards
Sensation
Ability to detect and encode information
Perception
Ability to organize and interpret information.
Bottom- Up Processing
Analysis of a stimuli begins at the sense receptors and works up to the brain. Uses basic sensations, no past experience. (doing a puzzle without looking at the picture)
Top- Down Processing
Information processing guided by higher mental processes like experience and expectations. Sensation and perception work together to help us make sense of complex things (doing a puzzle while looking at the picture)
Absolute Threshold
Minimum amount of stimulation needed to detect a stimulus 50% of the time.
Subliminal Stimulation
Information presented to you below the absolute threshold. Can prime us to respond in certain ways. Some information occurs automatically and unconsciously.
Difference Threshold
Just Noticeable Difference (JND) minimum amount of stimulation needed to detect a difference 50% of the time. (Change in volume)
Sensory Adaptation
Diminished sensitivity to an unchanging stimulus. All senses adapt except for vision. Allows us to focus informative changes in environment, reduces sensitivity. (Perception is different than reality)
Taste
Gestation, chemical sense, taste buds. Receptors regenerate after 2 weeks.
Supertasters
Bitter taste is dominant, 25% of population, don’t get enough nutrients, at risk for diseases, require vitamin supplements.
Undertasters
Sweet taste is dominant, 25% of population, more likely to eat sweets, takes more taste to satisfy need, at risk for diabetes.
Sensory Interaction
One sense influences another, McGurk Effect (can you see with your tongue?)
Smell
Olfaction-Chemical Sense Detect 1,000 different smells Regenerate every 5-8 weeks Receptors send info to Olfactory Bulb Can trigger memory, emotion, motivation
Touch
Essential to development
Pressure,Cold, Warm, Pain
(other sensations are a combination of the four)
Kinesthesis (Perception)
Your sense of moving and positioning your body (feeling without knowing your body is moving)
Pain
Something is wrong
Visceral Pain
Stomach ache, chest
Warming pain: after being hurt, warm to stop
Reminder pain: remind to not hurt it anymore
Acute v. Chronic
Somatic Pain
Muscle, body, cutting skin
Phantom Limb Phenomenon
pain, movement in missing limb, we feel with our brain
Psychological influences on pain
Distraction, overlook duration and focus on pains peak amount of pain felt at the end of a situation.
Socio- Cultural Influences of pain
Perceive pain when others are experiencing it, mirror neurons allow us empathy.
Synthesia
Joined Perception, senses blur
Learning
Relatively permanent change in behavior due to an EXPERIENCE.
Allows adaptability and flexibility.
Learn new behaviors to deal with circumstances.
Associative Learning
Link/associate two events that occur closely together.
Observational Learning
Learn by watching others (both positive and negative behaviors)
Ivan Pavlov
CLASSICAL CONDITIONING
Believed psychology should be objective and focus only on behavior.
We learn to associate two stimuli together.
Stimulus
Anything that is presented to you
Response
How you behave in response to anything that is presented to you.