other senses. copyright © allyn and bacon 2006 position and movement vestibular sense sense of body...
TRANSCRIPT
Other Senses
Copyright © Allyn and Bacon 2006
Position and MovementPosition and MovementVestibular Sense
Sense of body orientation with respect to gravity
Tells how our bodies, especially the head, are postured. (Straight, leaning, upside down,…)
Also, how we are moving and how our motion is changing
Closely associated with the inner ear and is carried to the brain on a branch of the auditory nerve
Children develop their vestibular senses by swinging, spinning, twirling, and rolling around on the ground.
Children gravitate toward these movements naturally.
Vestibular movement is in fact considered critical to brain development.
Kinesthetic Sense
• Sense of body position and movement of body parts relative to each other
Proprioception is another term that is often used interchangeably with
Kinesthesia
Copyright © Allyn and Bacon 2006
SmellSmell
Olfaction
Sense of smell
PheromonesPheromones • Chemical signals Chemical signals
released by released by organisms to organisms to communicate with communicate with other members of other members of the speciesthe species
Copyright © Allyn and Bacon 2006
SmellSmell
Age, Sex and Sense of Smell
Women
Men
10-19 20-29 30-39 40-49 50-59 60-69 70-79 80-89 90-99Age Group
4
3
2
0
Numberof correct
answers
Women and young adults have best sense of smell
Gustation – The sense of taste
Copyright © Allyn and Bacon 2006
Taste buds –Receptors for taste (primarily on the upper side of the tongue)
Taste
Four Primary Tastes• Sweet• Sour• Salty• Bitter
• New Fifth Quality: Umami ..the flavor associated with MSG
Campbell's soups
Hostess products
Doritos
Lays flavored potato chips
Top Ramen
Betty Crocker Hamburger Helper
Heinz canned gravy
Swanson frozen prepared meal
Kraft salad dressings, especially the "healthy low-fat" ones.
"Hydrolyzed Vegetable Protein," which is just another name for Monosodium
Glutamate.
Spicy is not a taste quality
Taste and Smell Work Together• Much of the taste
of an onion is odor, not flavor.
• If you did not have the sense of smell, an onion and an apple would taste the same
Supertasters• People that have more
taste buds for bitter flavors who are more sensitive than regular tasters
• The tend to dislike things such as diet soda
• Have a survival advantage, because most poisons are bitter
Copyright © Allyn and Bacon 2006
Fissured tongue
Copyright © Allyn and Bacon 2006
The Skin SensesThe Skin SensesTouchTouch
WarmthWarmth
ColdCold
TextureTexture
PainPain
PAIN• Pain means something is… …wrong with the body
No one has yet to develop a theory that explains everything about pain
Watch Zohan- Adam Sandler Feels No Pain video at
Youtube.com
Gate-Control TheoryGate-Control Theory• Theory that pain control is due to a neural
‘gate’ that can, under certain circumstances, block incoming pain signals
• Pain travels on two different sensory pathways to the brain
Fast fibers Fast fibers vs.vs. Slow fibers Slow fibers
• Fast fibers deliver most of the sensory information to the brain
• Very intense stimuli (pain) send strong signals on the slow fibers
Gate-Control TheoryGate-Control Theory• Competing messages from the fast fibers can block
the pain message in the slow fibers, preventing the slow fiber’s message from reaching the brain.
• The nervous system can only process a limited amount of stimulation at a time.