AP Psych, Unit 3 Lesson 6 The Other Senses, Module 25 pgs. 251-62
Study online at https://quizlet.com/_dynm5i
1. Smell Smell is a chemical sense so we smell something when
odorant molecules of a substance carried in the air reach a
tiny cluster of receptor cells at the top of each nasal cavity.
2. Why does smell They bind to receptors and get converted to chemical
produce power- signals (transduction) in the olfactory bulb, then via the the
ful memories? olfactory nerve they go to the hypothalamus, which sends
signals to the amygdala and hippocampus (limbic system
structures)
This is why smell produces powerful memories
3. What is the smell See diagram of smell process
process?
4. Where is the ol- See diagram of olfactory cortex.
factory cortex?
5. How do we differ- -Humans can detect 10,000 odorants, we have 5 million
entiate odors? olfactory receptors (dogs have 7x more!)
-Different olfactory receptors only accommodate certain
chemical structures - "lock and key" analogy
-Genetics can determine the types of receptors we have,
while experiences, physical state, expectations, and be-
liefs can affect our perception of them
-Each individuals has their own genetically determined
odor ("odor signature," "odortype," "smell fingerprint") that
is passed through urine and sweat - we prefer our own
odor
, AP Psych, Unit 3 Lesson 6 The Other Senses, Module 25 pgs. 251-62
Study online at https://quizlet.com/_dynm5i
6. Odor adapation We get used to consistent smells we are exposed, even
and smell blind- our odor type. Smell Blindness is when aging adults find it
ness difficult to detect odors and lose the emotional connection
of the odor. By the age of 60, 1 out of 4 adults will be smell
blind. By 80, 1 out of 2. Also affects their ability to taste
thingsEx. Nursing homes, gas leak in a house. Anosmias
are olfactory disorders resulting from head injuries that
tear the olfactory nerves, nasal cavity inflammation, or
aging.
7. How do we sense Our "sense of touch" is a mix of four basic and distinct skin
touch? senses, pressure, warmth, cold, and pain and our other
skin
sensations are variations of pressure, warmth, cold, and
pain.
8. How does Allows us to experience touch by receiving sensory in-
the somatosen- formation as a result of skin stimulation. Output is motor
sory cortex help cortex. (Right hemisphere section controls left side.) So-
us sense touch? matosensory cortex receives input from right side.)
9. Touch as bot- See touch as bottom up processing diagram.
tom-up process-
ing
10. Touch and pres- -5 million cutaneous receptors, but there is no simple
sure relationship between what we feel at a given spot and the
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