Ainsley is participating in a study that aims to determine whether the occipital cortex becomes more active in response to moving versus stationary stimuli. when she arrives at the lab, she ingests a "tracer" and then enters the scanning machine. what type of brain imaging is most likely being conducted in this study? computerized tomography (ct) scan electroencephalograph (eeg) magnet resonance imaging (mri) positron emission tomography (pet)