'Physiological noise' presentation slideshows

Evidence of Interictal Epilepctic Activity Using Simultaneous MRI and EEG

Evidence of Interictal Epilepctic Activity Using Simultaneous MRI and EEG. Alberto L. Vazquez, M.S.* Steve B. Baumann, Ph.D. + Mark L. Scheuer, M.D. + Douglas C. Noll, Ph.D.* * Dept. Biomedical Engineering University of Michigan, Ann Arbor, MI

304 views • 21 slides

fMRI: Biological Basis and Experiment Design Lecture 12: Signal-to-Noise Ratio

fMRI: Biological Basis and Experiment Design Lecture 12: Signal-to-Noise Ratio. Things that determine signal strength voxel size RF coil Things that determine noise contribution Bandwidth (thermal noise) Brains (physiological noise) Averaging. antwrp.gsfc.nasa.gov/apod/ap041008.html.

199 views • 19 slides

Noise, Part II: physiology and artifacts

176 views • 17 slides

Noise

Noise. SNR and CNR Types of noise Thermal Physiological Artifacts Thermal noise Averaging Bandwidth SNR - definitions. SNR: why do we care?. Typical BOLD contrast: 1% change Typical image SNR: 100:1 Typical CNR: 1!. SNR: why do we care?. Temporal averaging beats down noise:.

139 views • 13 slides