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Examples of stimulus frames used in the (a) face (KDEF identities AF14, AF13, AF19) and (b) object conditions of the experiment. Trials consisted of alternating scrambled and intact images at 3 Hz for 7 seconds. Decomposition of response waveforms into spectral harmonics isolated responses to the global structure of the intact image (1F; 3 Hz) from responses at the image update rate (2F; 6 Hz). Statistical analyses were conducted on the scalar amplitude of these harmonics.
