What does sensation mean?
the process of sensory organs converting physical stimuli into neurological impulses that the brain interprets as the five senses
What are sensory receptors?
Sensory nerve endings that respond to stimuli.
What is perception?
The process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events.
What’s the difference between bottom up and top down processing?
Bottom up processing is purely sensational because it starts at our sensory receptors. Top down processing is based off our experiences and expectations.
What is selective attention?
When we focus on our conscious awareness on a particular stimuli.
What is the cocktail party effect?
The ability to focus our attention on one voice at a party, among the many people who are attending.
What is the specific word(s) for the opposite of selective attention?
1) Inattentional Blindness
2) Change Blindness ( a form of inattentional blindness)
What is inattentional blindness?
Failing to see visible objects when our attention is directed elsewhere.
What is an example of inattentional blindness?
A magic trick
What is change blindness?
Failing to notice a change in the environment
What is an example of change blindness?
Switching out people during a conversation.
What is transduction?
Conversion of 1 form of energy into another. (Includes our senses turning into neural impulses for our brain)
What is psychophysics?
The study of relationships between the physical characteristics of stimuli, such as their intensity, and our psychological experience of them.
What are the 2 threshold?
Absolute and Difference thresholds
What is the difference between the 2 thresholds?
Absolute is the minimum stimulus energy needed to detect a particular stimulus (keyword) 50% of the time.
Difference is the minimum difference between two stimuli required for detection (keyword) 50% of the time.
What is the signal detection theory and which threshold does it apply to?
It predicts how and when we detect the faint presence of a faint signal amid background noise, so it changes constantly.
It applies to the absolute threshold.
What is it called when there’s stimuli you cannot detect 50% of the time?
Subliminal
Who started webers law and what is it?
Ernst Weber; For us to perceive a difference, 2 stimuli must differ by a constant minimum percentage. Ex) 2 lights must differ in intensity by 8 percent
What is sensory adaptation?
Diminished sensitivity as a consequence of constant stimulation. (Lowk like neuroadaptation)
What is priming?
exposure to one stimulus influences how a person responds
Why can we recognize faces?
Top down processing
Why can we focus on on one person in the midst of a loud baseball game?
The cocktail party effect
How can we convert light waves into signals to understand our psychology book?
Transduction
How do we notice the difference in hot water when washing our hands?
Difference threshold