10 in the hyperventilation portion of the EEG recording should have the Table B,

Question

10 in the hyperventilation portion of the EEG recording should have the Table B, general amplitude of the EEG (EEG 1-stddev) highest.
a. Did you observe the highest amplitude in your EEG data during hyperventilation? Use your data in this explanation.
b. The observed increase in EEG amplitude is due to which of the following (circle the best answer) i. The body struggling to remove excess carbon dioxide ii. An increase in overall pH, leading to an increase in neural excitability iii. A decrease in overall pH, leading to an increase in neural excitability iv. An increase in blood flow to the occipital lobe of the brain
c. Why does pH change as a result of hyperventilation? Electro EEG II: This lab will record an EEG from a subject that is relaxed with eyes closed performing mental arithmetic, hyperventilating and relaxed with eyes open. Students will then examine the alpha rhythm activity during these conditions. B. EEG Amplitudes: complete with the amplitudes of the recorded data. Segment Experimental Condition Alpha-RMS Stddev] 141-Mean] Eyes Closed CONTROL) Eyes closed, mental arithmetic Eyes closed, after hyperventilation Eyes Open 693345 52262 0.97612 2.9260258383 2 2.7922 35433 21082 632 2.5 2241 0.49118 C. Complete using the mean values of the Alpha RMS channel from Table B Mean difference+ Experimental Condition Segment Alpha- 1CONTROL Calculate the Summary RMS e Althe ) [41-Mean) (Eyes(Alpha RMS Closed)Control) Eyes closed, mental arithmetic 2 :58353 97612-0.212 o.96923 0.9612 o-o32- 4 148 .97412-o.3812 Eyes closed, after hyperventilation t- Eyes Open

Explanation / Answer

Answers:

a.Yes ,we can observe the high amplitude of EEG wave during hyperventilation. Now a days hyperventilation is being used as activation tool in EEG wave to enhance any abnormal finding in a normal EEG pattern.EEG is a noninvasive technique to record electrical activity of brain from scalp to access functioning of brain.

b. The observed EEG amplitude pattern is due to-- best answer will be 3. a decrease in overall pH, leading to increase in neural excitability because in hyperventilation there is hypercapnia like condition which causes decrease in overall pH.

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