EEG Lab Report Biohazard (1)
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Chemistry
Date
Jan 9, 2024
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Uploaded by CoachGoatMaster164
Biohazard
50B EEG Lab Report Template
Relevant Parameters:
First recording starts at event labeled 'EEG with changing eye conditions': Subject was relaxed with eyes closed for about 20 seconds, then opened eyes for 20 seconds, then closed eyes until end of recording.
Data is stored thusly:
CH 1 recorded EEG CH 40 alpha rhythm: 8-13 Hz
CH 41 beta rhythm: 13-30 Hz
CH 42 delta rhythm: 1-5 Hz
CH 43 theta rhythm: 4-8 Hz
Subject Name Josh Delgado
Subject Profile
Age: 26
Gender: Male
EEG Amplitude Measurements
Table 3.2 Standard Deviation by Channel
Rhythm
(Ch)
Eyes Closed
Eyes Open
Eyes Re-closed
Alpha (40)
0.593755
0.666854
0.693639
Beta (41)
0.88931
0.904944
0.938433
Delta (42)
0.660853
0.651603
0.728989
Theta (43)
0.61288
0.571923
0.666393
EEG Frequency Measurements
Table 3.3
Frequency (Hz)
Rhythm
CH Measurement
Cycle 1
Cycle 2
Cycle 3
Mean
Alpha SC Freq
8.69565
12.5
10
10.3986
Beta SC Freq
22.2222
18.18
20
20.1347
Delta SC Freq 6.45161
4.65116
4.34783
5.1502
Theta SC Freq
7.1286
4.34783
8
6.4969
Biohazard
50B EEG Lab Report Template
Subject Name: Josh Delgado
Subject Profile
Age: 26
Gender: Male
Analysis
Examine the alpha and beta waveforms for change between the “eyes closed” state and the “eyes open” state.
Does alpha desynchronization
occur when the eyes are open?
Explain: No, alpha desynchronization does not occur. When the subject closed their eyes, it was expected to occur as they were supposed to be more relaxed by doing so. However, this error may have been caused by other factors other than the subject not being able to relax. Does the beta rhythm become more pronounced in the “eyes open” state? Explain: The beta rhythm does increase during the “eyes open” state. This is consistent with the expected results. Beta rhythm is expected to increase when the subject is in a state of complex thought or anxiety. Examine the delta and theta rhythm. Is there an increase in delta and theta activity when the eyes are open? Explain: No, there wasn’t an increase in delta and theta activity when the eyes were open. The increase that occurs when the subject’s eyes are closed may be caused by his concentrating on entering a state of relaxation. This inconsistency
may also be caused by other external factors.
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