the hippocampus showing the granular cell layer of the dentate gyrus (arrows) revealed by DTI contrasts at 160 Hz, which is not discernible at 0 Hz. Corresponding nissl-stained sections indicating the granular cell layer of the dentate gyrus (DG_gr) are shown for anatomical comparison. Bottom panel) Mean ADC in the DG_gr and a region within the CA1 subfield of the hippocampus plotted as a funct...

Radial frequency (RF) patterns, paths deformed from circular by a sinusoidal modulation of radius, have proved valuable stimuli for investigation of visual shape processing. Their utility relies upon evidence that thresholds for detection of modulation decrease, as cycles of modulation are added, at a rate that cannot be accounted for by the improving probability of detection of any single cycl...

This paper presents some of the new design requirements for linear col-liders and describes the types of RF systems and accelerating structures that might produce very high energies and gradients within reasonable power consumption limits. Directions for future research are indicated.

This paper presents an alternative way to produce flattopped RF pulses at the pulse compressor output. Flattopped RF pulses are suitable for multi-bunch operation where it is often required that beams experience the same accelerating gradient. Moreover, the energy gain, in this case, is less sensitive to timing jitters. The proposed approach is based on Iterative Learning Control technique, whi...

Many common magnetic resonance imaging sequences are classified either as spin echo or gradient echo techniques. Generally, a gradient echo occurs when spins are coherent regardless of their position within the sample. This occurs whenever the net gradient area since a previous echo is zero. In a spin echo, spins are coherent regardless of their resonance frequency [1]. Here we will focus on gr...