Neurophysiology Lab Report

The following example essay focuses on the Neurophysiology Lab Report. Read the introduction, body and conclusion of the essay, scroll down.
Continue to increase voltage by 0. V and click single stimulus until you find Max voltage. Maximal Voltage = 10. V Record data Activity 2 Mechanical Stimulation 1. Clear the oscilloscope. 2. Drag the glass rod over the nerve, and release it to indicate the rod is touching the nerve. What do you see on the oscilloscope? (An action potential trace. ) How does this tracing compare? (It has action potential, but different voltage from previous tracings.

Activity 3 Thermal Stimulation Click on the glass rod and drag it to the heater. Click the heat button.

When the rod turns red, indicating its been heated, click and drag it over the nerve. What happens? (The action potential of the tracing looks like it increases. ) How does this trace compare to the unheated glass rod? (Action potential is higher. ) Explanation? (The heated glass rod affects the nerve more than the cool glass rod.

) Activity 4 Chemical Stimulation 1. Click and drag the sodium chloride bottle over to the nerve to dispense drops. Does this generate action potential? (No action potential takes place. ) 2. Look at activity 1 and use voltage and click single stimulus.

Is there anything Yes —- Yes different? (No difference. ) Record data Nasal: Action Potential-Yes 3. Clean nerve chamber, and clear the oscilloscope. 4. Click and drag HCI to nerve chamber Action Potential- Yes Different form threshold stimulus? No. 5. Clean nerve chamber. 6. Print data. What kinds of stimuli can elicit an action potential? Voltage > or HCI Activity 8 Measuring Nerve Conduction Velocity See lab manual.

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E. Results Experiment: Eliciting a Nerve Impulse Activities 1-4 Voltage Glass Barnacle Heat Action Potential 3. 0 v Yes . V 10. 0 ”– Yes Yes Experiment: Nerve Conduction Velocity Activity 8 Nerve Type Time (mess) Distance (mm) Conduction Velocity Worm 5. Ass mm 8. 60 m/sec Frog . Ass mm 27. 56 m/sec Rata 2. Ass mm 16. 67 m/sec Rat 2 1. So mm 43 reset F. Discussion = 3. OVA, Nasal, In this experiment I investigated, the neurophysiology of different types of nerves. In activities 1-4, I found what stimulates the nerve through different types of methods. We used mechanical, thermal, and chemical stimulation on the nerve to find an action potential on the given nerve.

Neurophysiology Lab Report

In activity 8, we measured the nerve conduction velocity of different types of nerves. The nerves were tested were the earthworm, frog, and two rat nerves. The worm had the slowest conduction velocity, followed by the first rat, then the frog, and the fastest one was the second rat. My conclusions about this experiment are that given enough voltage, or a chemical, mechanical, or thermal stimulation action potential can be found in a nerve. Other factors that play a role in finding an action potential were natural substances such as Nasal, HCI, and ethanol.