2 points (Extra Credit) QUESTION 11 Consider the power spectra plotted in the fi

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2 points (Extra Credit) QUESTION 11 Consider the power spectra plotted in the figure below. The different color curves indicate the power spectrum of data recorded duing different in vitro experments (from slices of rat neocortex). The peak power of each curve is indicated with a vertical dashed line, and assigned a Greek letter as a label; each label is consistent with the frequency band corresponding to the peak. For example, the "theta" peak occurs near 6 Hz. Consider the peaks beginning at theta frequency (6 Hz) and higher. For each pair of neighboring power peaks (beginning at theta), compute the ratio of the correspondng frequencies. You'll find, for each pair of neighboring peaks, a number (i.e., the ratio). This number is very near a mystical number in mathematics... what is it called? EEGband 81 82 9 10 100 Frequency (Hz) T T T Arlal Words:0 Path: p

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1st Ratio = alpha/theta = 9/6 = 1.5

2nd ratio = Beta2/Beta1 = 25/17 = 1.47

3rd ratio = Gamma2/Gamma1 = 70/40 = 1.7

All these numbers are near to pi/2.

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