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Flashcards in Sensation and Perception Deck (85)
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1

what is sensation?

the act of using using our sensory systems to detect environmental stimuli

2

what is perception?

recognizing and identifying sensory stimulus

3

Vision raw sensory data is in the form of...

light waves

4

hearing raw sensory data is in the form of...

sound waves

5

smell raw sensory data is in the form of...

airborne chemicals

6

taste raw sensory data is in the form of...

food chemicals

7

touch raw sensory data is in the form of...

pressure

8

What two factors help the transformation of physical stimuli into perception?

sensory receptor cells and sensory transduction

9

What is the specialized cell that converts a specific form of environmental stimuli into neural impulses?

sensory receptor cell

10

explain sensory transduction

the process of converting a specific form of sensory data into a neural implies that our brain can read

11

Different sense have different...

receptor cells

12

Absolute threshold is the .... amount of a stimulus that one can detect

smallest

13

Difference in threshold is measured by

JND

14

What is JND

the minimal difference needed to notice a difference between two stimuli

15

Different JND depends on the...

strength of the original stimulus

16

What is sensory adaptation?

contant stimulation decreases the number of sensory messages sent to the brain, which causes decreased sensation

17

what does sensory adaptation allow?

allows us to focus on important stimuli in our environment

18

sensation and perception occur together but through different...

processes

19

What are the two different processes of sensation and perception?

bottom top processing and top down processing

20

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.....

bottom-up processing

21

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

22

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

23

perceptual set can affect...

all senses

24

perception involves both bottom-up process (......) and top-down processes (.........)

Neural signals to perception, interpretation based on cognitive processes

25

When we smell, chemicals are also known as

odorants

26

Odorants stimulate the 5 million receptor neurons at the top of each

nasal cavity

27

the .... send a neural impulse (.....) to the smell centre of the brain, also known as the .....

receptor cells, transduction, olfactory bulb

28

bumps of the tongue are called

papillae

29

chemical substances in food dissolve in saliva and fall where on the tongue?

between the papillae

30

papillae holds ...

receptor cells