formed an orthonormal basis. Approximating a "tight frame" generates redundancy which allows low-resolution neural responses to represent high-resolution images, as we illustrate by image reconstructions with severely quantized 2D Gabor coefficients. Index Terms---Gabor wavelets, coarse coding

brain segmentation method to changes in scanner platforms and improves its accuracy and robustness, which can thus facilitate multicenter or multisite neuroanatomical imaging studies. Index Terms—Brain atlas, brain imaging, computational neuroanatomy, magnetic resonance imaging (MRI) segmentation. I.

model points are attracted to the brain surface. A conjugate gradient method minimizes the energy function, allowing the model to automatically converge to the smoothed brain surface. Finally, labels are propagated from the deformed atlas onto the high-resolution brain surface. Index Terms—Brain atlas

stereotaxic space popular with researchers working in functional neuroimaging. Presenting brains in this format is useful as the slices correspond to the standard anatomical atlases used by neuroimagers. In addition, lesion position and volume are directly comparable across patients. This article describes

it a promising method for an EEG-based brain–computer interface. Index Terms—Assistive communication, electroencephalograph (EEG) classification, event-related desynchronization (ERD), mu rhythm, prosthesis, sensorimotor cortex. I.

stable and has good extensibility. Index Terms—Brain mapping, conformal map, landmark matching, spherical harmonic transformation. I.

of the brain atlas is associated with a name tag, displayed by a user-controlled pointer. The atlas holds a major promise as a template for model-driven segmentation. Using this technique, many regions of interest can be characterized simultaneously on new brain images. Index Terms- Brain atlas, magnetic

-coil array in brain imaging. With an array of five coils double-oblique heart images were obtained in one-third of conventional scan time. Magn Reson Med 42:952-962, 1999. 1999 Wiley-Liss, Inc. Key words: MRI; sensitivity encoding; SENSE; fast imaging; receiver coil array Among today's many medical

of the system can communicate at the rate of 7.8 characters a minute and achieve 80 % accuracy. The system’s performance in real time was also assessed. Our data indicate that a P300–based BCI is feasible and practical. However, these conclusions are based on tests using healthy individuals. Index Terms

algorithm on simulated data and we illustrate its performance on various MR images with important field inhomogeneities. We also relate the proposed algorithm to other bias correction algorithms. Index Terms—Bias field, digital brain atlas, MRI, tissue classification. I.