Dear SPM supporters,
Could you tell me why the articles with fMRI showed almost only the activation of brain while the articles with PET scan mentioned both, the activation and de-activation?
What's wrong with fMRI for the de-activation in general?
I've studied the visual erotic stimuli with the PET scan showing a lot of deactivation.
Thank you very much,
Sincerely,
Huynh
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