A high-speed circuit architecture for IR-UWB transmission of fast-scan cyclic voltammetry in 0.35 εm CMOS.

This paper reports on the design of a high-speed circuit for impulse radio ultra-wideband (IR-UWB) transmission of 16-channel neurochemical activity recorded using 300-V/s fast-scan cyclic voltammetry (FSCV). Simulated in a low-cost 0.35-εm standard complementary metal-oxide-semiconductor (CMOS) technology, the circuit generates 3(rd)-derivative Gaussian pulses with sub-nanosecond duration, which are highpass filtered externally using a 4(th)-order Butterworth filter before feeding to an off-chip UWB antenna.

Chronic pain after spinal cord injury: results of a long-term study.

Objective: Chronic pain after spinal cord injury (SCI) is a common and considerable complication and may continue for a long time.

Design: During a 2-year survey, 13.9 +/- 3.