Lecture 12 Touch, Taste

1
Lecture 12 - Touch, Taste Smell

• Touch
• Proprioception
• Tactile Perception
• Temperature
• Pain
• Taste
• Smell

2
Touch, Taste Smell

• Touch
• Proprioception
• Tactile Perception
• Temperature
• Pain
• Taste
• Smell

3
Touch

• Proprioception (kinesthesis)
• various ways of knowing about body position
• mechanoreceptors
• tendon organs
• muscle spindles
• outflow theory
• phantom limb

4
Touch, Taste Smell

• Touch
• Proprioception
• Tactile Perception
• Temperature
• Pain
• Taste
• Smell

5
Touch

• Tactile Perception
• von Frey Hairs
• 4 types of afferent fibers
• Meissner corpuscle
• Merkel disk
• Ruffini endings
• Pacinian corpuscle

6

• see textbook Fig. 12.7

7

• see textbook Fig. 12.1

8

• see textbook Fig. 12.2

9

• see textbook Fig. 12.4

10

• see textbook Fig. 12.3

11

• see textbook Fig. 12.9

12
Touch

• Afferent Pathways
• somatosensory cortex
• cortical organization
• homunculus
• plasticity

13

• see textbook Fig. 12.10

14

• see textbook Fig. 12.11

15

• see textbook Fig. 12.12

16
Touch, Taste Smell

• Touch
• Proprioception
• Tactile Perception
• Temperature
• Pain
• Taste
• Smell

17
Temperature

• thermoreceptors
• distinct from pain receptors

18
Touch, Taste Smell

• Touch
• Proprioception
• Tactile Perception
• Temperature
• Pain
• Taste
• Smell

19
Nociception (Pain)

• nociceptors
• mechanoreceptors
• thermoreceptors
• multimodal
• central inhihition of pain perception

20
Touch, Taste Smell

• Touch
• Proprioception
• Tactile Perception
• Temperature
• Pain
• Taste
• Smell

21
Taste (Gustation)

• anatomy of the gustatory pathway
• papillae
• fungiform, foliate circumvallate
• nerves
• facial, glossopharyngeal vagus

22

• see textbook Fig. 13.14

23
Taste

• classification of taste
• sweet, bitter, sour, salty, and umami
• physiology of taste 
• taste and feeding
• specific hunger
• taste aversion
• flavour

24

• see textbook Fig. 13.16

25
Touch, Taste Smell

• Touch
• Proprioception
• Tactile Perception
• Temperature
• Pain
• Taste
• Smell

26
Smell (Olfaction)

• classification of odours
• physiology of olfaction
• pheromones
• primary (slow)
• releasing (fast)

27

• see textbook Fig. 13.5

28

• see textbook Fig. 13.4

29

• see textbook Fig. 13.6

30

• see textbook Fig. 13.7

31

• see textbook Fig. 13.8a

32

• see textbook Fig. 13.8b

33

• see textbook Fig. 13.17