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. 2005 Jun 28;2(6):e153. doi: 10.1371/journal.pmed.0020153

Figure 4. Correlation Map between Alpha, Delta, and Tinnitus-Related Distress.

Figure 4

Since previous analyses (see Figure 3) implicated corresponding areas for the effects found for alpha and delta, tinnitus-related distress was additionally correlated with a frequency index ([delta – alpha]/[delta + alpha]; bottom panel). Effects are largest for right temporal and left frontal sources.