Lab 2 Nervous System

Lab 2 Nervous System - Lab 2 Nervous System Human Biology...

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Lab 2 Nervous System Human Biology Lab
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Neurons
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Human Brain
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EEG The EEG (electroencephalograph) measures brainwaves of different frequencies within the brain. Electrodes are placed on specific sites on the scalp to detect and record the electrical impulses within the brain. The raw EEG has usually been described in terms of frequency bands: BETA (13-30Hz), ALPHA (8-12 Hz), THETA (4-8 Hz), and DELTA (less than 4 Hz).
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EEG Measurements A frequency is the number of times a wave repeats itself within a second. It can be compared to the frequencies that you tune into on your radio. If any of these frequencies are deficient, excessive, or difficult to access, our mental performance can suffer. Amplitude represents the power of electrical impulses generated by brain.
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Alpha Waves Alpha waves are those between 7.5 and 13(Hz). Alpha waves will peak around 10Hz. Good healthy alpha production promotes mental resourcefulness, aids in the ability to mentally coordinate. Alpha appears to bridge the conscious to the subconscious.
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Alpha Waves cont.
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This note was uploaded on 04/17/2008 for the course SCI Human Bio taught by Professor Mastrangelo during the Winter '07 term at RIT.

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Lab 2 Nervous System - Lab 2 Nervous System Human Biology...

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