Julia H. Zhu

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UNLABELLED Posterror learning, associated with medial-frontal cortical recruitment in healthy subjects, is compromised in neuropsychiatric disorders. Here we report novel evidence for the mechanisms underlying learning dysfunctions in schizophrenia. We show that, by noninvasively passing direct current through human medial-frontal cortex, we could enhance(More)
BACKGROUND International humanitarian aid workers providing care in emergencies are subjected to numerous chronic and traumatic stressors. OBJECTIVES To examine consequences of such experiences on aid workers' mental health and how the impact is influenced by moderating variables. METHODOLOGY We conducted a longitudinal study in a sample of(More)
Executive control and flexible adjustment of behavior following errors are essential to adaptive functioning. Loss of adaptive control may be a biomarker of a wide range of neuropsychiatric disorders, particularly in the schizophrenia spectrum. Here, we provide support for the view that oscillatory activity in the frontal cortex underlies adaptive(More)
OBJECTIVE Post-marketing surveillance was conducted to monitor the performance of the OraQuick Advance rapid HIV-1/2 antibody test (OraQuick) on whole blood and oral fluid. DESIGN Surveillance of routinely collected data on clients tested with OraQuick in 368 testing sites affiliated with 17 state and city health departments between 11 August 2004 and 30(More)
Over half of HIV infections in the United States occur among men who have sex with men (MSM). Awareness of infection is a necessary precursor to antiretroviral treatment and risk reduction among HIV-infected persons. We report data on prevalence and awareness of HIV infection among MSM in 2008 and 2011, using data from 20 cities participating in the 2008(More)
Physicians may be called upon to counsel male patients or parents of newborn males regarding their decision to circumcise their newborn sons. The purpose of the present study was to describe physicians who do not understand the benefits and risks associated with male circumcision well enough to counsel parents of newborn male infants and adult men. A(More)
OBJECTIVE To determine the predictors of survival and functional outcome of pediatric patients with traumatic brain injury severe enough to require endotracheal intubation and mechanical ventilation. DESIGN Retrospective, observational cohort study. SETTING Pediatric intensive care unit (ICU) at a tertiary care children's hospital. PATIENTS All(More)
  • Z Hou, J Zhu
  • Electromyography and clinical neurophysiology
  • 1998
OBJECTIVE This experiment was designed to explore the reasons of incorrect electrophysiological evaluation following peripheral nerve repair. METHODS Twenty-four New Zealand white rabbits were used and divided into 2 groups. The first group of animals underwent severance of gastrocnemius muscle nerve and only the medial branch of the nerve was(More)
BACKGROUND Gay, bisexual and other men who have sex with men (MSM) are disproportionately affected by HIV in Canada. Combination antiretroviral therapy has been shown to dramatically decrease progression to AIDS, premature death and HIV transmission. However, there are no comprehensive data regarding combination antiretroviral therapy outcomes among this(More)