1. Sensory receptor
Transducers

2. Mechano R. Thermo R. Nociceptors Electromagnetic R. Chemo R.
Types of receptors (R.)
Mechano R.
Thermo R.
Nociceptors
Electromagnetic R.
Chemo R.

5. The Pacinian Corpuscle

9. It is that particular form of energy to which a R. is most sensitive.
The adequate stimulus
It is that particular form of energy to which a R. is most sensitive.

10. Labeled line Principle
The modality of sensation felt when a nerve fiber is stimulated throughout its pathway, is determined by the point in the brain to which the nerve fiber ultimately activates.

11. Law of Projection
No matter where a sensory pathway is stimulated along its course to the cortex, the conscious sensation produced is referred to the location of the R.
e.g. Phantom limb

14. The Receptor Potential & The Action Potential

15. The frequency of AP is proportional to the magnitude of the applied stimulus.

16. Relation between amplitude of receptor potential to strength of mechanical stimulus applied to a pacinian corpuscle

18. Adaptation of R.
Phasic R.
Tonic R.

20. Mechanism of adaptation
1. Lamella slips back to its original place after a short period away from the nerve terminal
2. Accommodation of the nerve fiber

22. Synesthesia Synesthesia:
is a neurologically based condition in which stimulation of one sensory or cognitive pathway leads to automatic, involuntary experiences in a second sensory or cognitive pathway

23. Grapheme test

25. 2 Classification Schemes for Peripheral Fibers
Fiber size: I, II, III, IV
Conduction velocity: A, B, C
Major afferent
Major efferent
Nolte 9-21

26. Susceptibility of Different Types of Fibers to Conduction Block by Various Agents
Effect
Most susceptible
Intermediate
Least susceptible
Block by hypoxia B A C
Block by pressure
Block by local anesthetics

27. Classification of Peripheral Nerve Fibers