Flashcards in Sensation and Perception Deck (85)
what is sensation?
the act of using using our sensory systems to detect environmental stimuli
what is perception?
recognizing and identifying sensory stimulus
Vision raw sensory data is in the form of...
hearing raw sensory data is in the form of...
smell raw sensory data is in the form of...
taste raw sensory data is in the form of...
touch raw sensory data is in the form of...
What two factors help the transformation of physical stimuli into perception?
sensory receptor cells and sensory transduction
What is the specialized cell that converts a specific form of environmental stimuli into neural impulses?
sensory receptor cell
explain sensory transduction
the process of converting a specific form of sensory data into a neural implies that our brain can read
Different sense have different...
Absolute threshold is the .... amount of a stimulus that one can detect
Difference in threshold is measured by
What is JND
the minimal difference needed to notice a difference between two stimuli
Different JND depends on the...
strength of the original stimulus
What is sensory adaptation?
contant stimulation decreases the number of sensory messages sent to the brain, which causes decreased sensation
what does sensory adaptation allow?
allows us to focus on important stimuli in our environment
sensation and perception occur together but through different...
What are the two different processes of sensation and perception?
bottom top processing and top down processing
When raw sensory data is transduced, sent to the brain and your brain uses all of the data to build a perception and the neural signals move up to more complex brain regions to start putting together the perception is.....
what is top-down processing
it is led by cognitive processes where you use previously learned information to help recognize and interpret the data coming into your brain
What is perceptual set?
the readiness to interpret a certain stimulus in a certain way, expecting to see a specific object, you are more likely to interpret it in that way
perceptual set can affect...
perception involves both bottom-up process (......) and top-down processes (.........)
Neural signals to perception, interpretation based on cognitive processes
When we smell, chemicals are also known as
Odorants stimulate the 5 million receptor neurons at the top of each
the .... send a neural impulse (.....) to the smell centre of the brain, also known as the .....
receptor cells, transduction, olfactory bulb
bumps of the tongue are called
chemical substances in food dissolve in saliva and fall where on the tongue?
between the papillae