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Cerebral white matter undergoes various changes with normal aging. This study investigated the association between age, gender, and the global and regional fractional anisotropy (FA) and mean diffusivity (MD) in 145 adults (30 to 80 years old) using diffusion tensor magnetic resonance imaging. We studied sixteen regions of interest in both hemispheres to(More)
— This paper presents a broadband very low 3 rd-order intermodulation inductor-less low-noise amplifier (LNA) implemented in 0.13 µm CMOS technology. The LNA consists of a common-gate input stage for wideband impedance matching , followed by two parallel common source amplifiers which perform noise and distortion cancellation. Third-order distortion due to(More)
OBJECTIVE To study the effect of 0.9 Hz repetitive transcranial magnetic stimulation (rTMS) of the lateral premotor cortex on neuronal activity in cortical motor areas during simple motor tasks. METHODS In 8 subjects, electroencephalogram (EEG) and electromyogram (EMG) were simultaneously recorded during voluntary contractions of the thumb before and(More)
Diffusion tensor imaging (DTI) has already proven to be a valuable tool when investigating both global and regional microstructural white matter (WM) brain changes in the human aging process. Although subject to many criticisms, voxel-based analysis is currently one of the most common and preferred approaches in such DTI aging studies. In this context,(More)
BACKGROUND Endogenous estrogens play an important role in the overall cardiocirculatory system. However, there are no studies exploring the hormone metabolism and signaling pathway genes together on ischemic stroke, including sulfotransferase family 1E (SULT1E1), catechol-O-methyl-transferase (COMT), and estrogen receptor α (ESR1). METHODS A case-control(More)
We stretched a DNA molecule using atomic force microscope and quantified the mechanical properties associated with B and S forms of double-stranded DNA (dsDNA), molten DNA, and single-stranded DNA (ssDNA). We also fit overdamped diffusion models to the AFM time series and used these models to extract additional kinetic information about the system. Our(More)
The emergence of smart devices promises to bring enhanced convenience to common communication and information retrieval tasks. However, disabled users often have trouble operating touch sceens. We introduce Blowatch, a novel input method for smartwatches and potentially for other mobile devices, which provides hands-free interaction and avoid the occlusion(More)
This is a case report of a 32-year-old woman with chronic severe anemia who developed headaches and seizures 5 days after receiving a blood transfusion of eight units (1600 ml) of packed red blood cells. Magnetic resonance imaging indicated vasogenic edematous lesions bilaterally over the occipital lobes that were consistent with reversible posterior(More)
This paper presents an integrated quadrature demodulator with on-chip frequency divider implemented in a 0.13 µm CMOS technology. The mixer consists of a transconductance stage, a passive current switching stage, and an operational amplifier output stage. A complementary input architecture has been used to increase the transconductance for a given bias(More)