This research confronts clinical expertise and bedside behavioral evaluation of altered states of consciousness with state-of-the-art multimodal imaging combining the information from positron emission tomography ( PET ), functional magnetic resonance imaging ( fMRI ), structural MRI, electroencephalography ( EEG ), event related potential ( ERP ) and transcranial magnetic stimulation ( TMS ) data.
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Other psycho-physiological measures, such as event related potentials ( ERP ), event related desynchronization ( ERD ), transient heart rate ( HR ), and electrodermal activity ( EDA ), may be useful for evaluating an operator's perception of critical environmental cues, that is, to determine if the operator has detected and perceived a task-relevant stimulus ( Wilson, 2000 ).
