Sensitivity, specificity, and variability of nerve conduction velocity measurements in carpal tunnel syndrome.

Objective: To explore the diagnostic values of 8 commonly used electrodiagnostic techniques for measuring median nerve conduction velocity (NCV) in carpal tunnel syndrome (CTS).

Design: Sensitivity and specificity analyses.

Setting: A hospital-based electrodiagnostic laboratory.

Electrophysiologic abnormalities of auditory and visual information processing in patients with traumatic brain injury.

Objective: Through both auditory and visual modalities, we sought to explore the efficacy of event-related potentials in detecting residual cognitive impairments in patients with traumatic brain injury (TBI).

Design: Control subjects and TBI patients with favorable recovery were recruited. Pure tone and primary color discrimination tasks were utilized to elicit auditory and visual event-related potentials, respectively.