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Based on theoretical models, we investigated the dynamics of brain activation during anticipatory anxiety using functional magnetic resonance imaging and a combined parametric/correlational design. Subjects (16 females) anticipated the application of electrical shocks of varying intensity resulting in four different threat levels. The parametric analysis revealed an inverted U-function of activation...
We investigated cortical responses and valence/arousal ratings of spider phobic, snake phobic, and healthy subjects while they were processing feared, fear-relevant, emotional neutral, and pleasant stimuli. Results revealed significantly larger amplitudes of late ERP components (P3 and late positive complex, LPC) but not of early components (N1, P2, N2) in phobics when subjects were processing feared...
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