1. Sensory Physiology

2. Sensation State of external/internal awareness Stimulus Receptor Nerve impulse to brain

4. Characteristics of Sensations Projection – Phantom Pain Adaptation Afterimages Modality

5. Receptors Dendrites Generator potential

6. Receptors according to stimulus location Exteroceptors Enteroceptors = Visceroceptors Proprioceptors

7. Receptors according to Type of Stimulus Mechanoreceptors Thermoreceptors Chemoreceptors Photoreceptors Nociceptors (pain)

8. Cutaneous Sensations Receptor Fields – Two point discrimination/threshold – Lateral inhibition

10. Cutaneous Sensations Tactile sensations – Meissner’s corpuscles = Touch corpuscles – Hair root plexus – Free nerve endings

12. Cutaneous Sensations Pressure sensations – Pacinian corpuscles Thermal sensations – Free nerve endings Pain sensation – Free nerve endings – Referred pain

13. Proprioceptive Sensations = Kinesthetic Sense Muscle spindles = Intrafusal fiber – Stretch receptors Tendon organs = Golgi tendon organs – Contraction receptors Misc. joint receptors

16. SPECIAL SENSES

17. Olfaction Receptors in upper nasal mucosa Olfactory nerve Olfactory bulb Olfactory tract Temporal lobe of cerebral cortex

19. Gustation Taste buds are receptors Taste pore Liquid Taste zones

21. Gustation Sensory nerve fibers – Facial – Glossopharyngeal – Vagus Brain stem Thalamus Parietal lobe of cerebral cortex