Comparison of neural signal sources for discriminating "crave" and "don't crave" task conditions: Implications for fMRI neurofeedback.

A statistically significant linear increase across the repeated runs was found in the PCC ( R 2 = 0.234, p = 8.89 × 10 −7 ), left insula ( R 2 = 0.107, p = 1.39 × 10 −3 ), and right insula ( R 2 = 0.132, p = 3.47 × 10 −4 ) and marginally significant in the ACC ( R 2 = 0.043, p = 0.047).

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