Related by context. Frequent words. (Click for all words.) 76 electroencephalogram EEG 69 electroencephalography EEG 62 electrophysiological 61 EEG 61 EEGs 60 polysomnography 59 electrocardiogram ECG 58 electrocardiogram 56 electrodes attached 56 brainwaves 54 intravascular ultrasound 54 Doppler ultrasound 54 nerve conduction 53 electrocardiograms 52 oxygen saturation 52 imaging fMRI 52 fMRI 52 electrocardiography 52 magnetic pulses 52 physiological parameters 52 transcranial magnetic stimulation 52 electrical impulses 51 pulse oximeter 51 EKG 51 electrodes implanted 51 neurophysiological 50 echocardiogram 50 echocardiographic 50 diffusion tensor imaging 50 respiration 50 functional magnetic resonance 50 single photon emission 49 physiological responses 49 intravascular ultrasound IVUS 49 brachial artery 49 electrodes 49 brain scans 49 nerve stimulation 49 microelectrodes 49 electrical currents 49 implantable cardioverter defibrillator 49 oximetry 48 electrical pulses 48 motor cortex 48 noninvasively 48 electrical stimulation 48 positron emission tomography 48 biphasic 47 sensory nerves 47 pulse generator 47 abnormal 47 oral glucose tolerance 47 sensorimotor 47 stimulator 46 auditory 46 computerized tomography 46 cardioversion 46 pulmonary function 46 neuropsychological tests 46 autonomic nervous system 46 neurostimulator 46 overactivity 46 noninvasive 46 nystagmus 46 nerve conduction studies 46 Brain scans 46 hemodynamics 46 intravascular 46 ECG 45 vasodilation 45 physiological 45 diagnostically 45 PET scans 45 fMRI scans 45 tomography 45 carotid intima media 45 fibrillation 45 neuronal activity 45 implanted defibrillator 45 physiologic 45 ultrasound 45 spirometry 45 muscle contractions 45 ventricular tachycardia 45 biofeedback 45 pulsations 45 QT interval 45 neuropsychological 45 positron emission tomography PET 44 implanted electrodes 44 ankle brachial index 44 ECGs 44 tachycardia 44 hypoxemia 44 brain 44 neurofeedback 44 neuroimaging 44 neuropsychological testing 44 pulse oximeters 44 MRI scans 44 intracranial pressure