PhysioEx 8.0 Neurophysiology Lab Activity 3 & 4

Activity 3: Thermal Stimulation (p. 35)

An action potential is generated when you touch the heated rod to the nerve.
The tracing shows the action potential peaking slightly higher than the peak generated by
the unheated rod.
Thermal stimulation can also elicit a nerve response. Heat generates action potentials in
more of the neurons in a nerve than are generated by touch.

Activity 4: Chemical Stimulation (p. 35)

1. Yes, dropping sodium chloride on the nerve generates an action potential.
2. No, the tracing does not differ from the original threshold stimulus tracing.
4. Yes, dropping hydrochloric acid on the nerve generates an action potential.
No, the tracing does not differ from the original threshold stimulus tracing.
6. Electrical, mechnical, thermal, and chemical stimulation are all capable of generating an
action potential in a nerve.

Thanks!!

Could you post the answers to my other two topics for 5&6 and 7&8?