Crystal M Blais

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Behavioral studies have shown that nicotine enhances performance in sustained attention tasks, but they have not shown convincing support for the effects of nicotine on tasks requiring selective attention or attentional control under conditions of distraction. We investigated distractibility in 14 smokers (7 females) with event-related brain potentials(More)
BACKGROUND The procognitive actions of the nicotinic acetylcholine receptor (nAChR) agonist nicotine are believed, in part, to motivate the excessive cigarette smoking in schizophrenia, a disorder associated with deficits in multiple cognitive domains, including low-level auditory sensory processes and higher-order attention-dependent operations. (More)
Acute nicotine has been found to improve task performance in smokers after smoking abstinence, but the attentional processes mediating these improvements are unclear. Since scalp-recorded event-related potentials (ERPs) have been shown to be sensitive indicators of selective attention, the effects of acutely administered nicotine were examined on ERPs and(More)
Given the cognitive-promoting properties of the nicotinic acetylcholinergic receptor (nAChR) agonist, nicotine, the increased prevalence of smoke-inhaled nicotine in schizophrenia has been interpreted as an attempt to self-correct cognitive deficits, which have been particularly pronounced in the attentional domain. As glutamatergic abnormalities have been(More)
  • C Blais
  • 1993
Antegrade puncture of the femoral artery is often the first step in angioplasty or thrombolysis of the lower limb. Because of presumed complications, mostly from anecdotal literature, the common femoral artery is the preferred site of entry. From there, selective catheterization of the superficial femoral artery can be performed. This two-step procedure is(More)
The radiologic report records all of the important steps taken in the practice of radiology and should be evaluated with special interest. The literature reflects the subjectivity inherent to a field left to personal interpretation, and few prospective studies of radiologic reporting are available. To determine the characteristics of the ideal radiologic(More)
1. Introduction This document is a comprehensive review of the scientific literature on the tDCS modality, limited to safety and chronic pain management. The reader is encouraged to read the cited articles. Statements in this document are intended to inform the reader on the subject of tDCS, and should not be considered as marketing claims. All claims in(More)
Comorbidity between depression and tobacco use may reflect self-medication of serotonergically mediated mood dysregulation, which has been associated with aberrant cortical activation and hemispheric asymmetry in patients with major depressive disorders (MDD). This randomized, double-blind study in 28 remitted MDD patients examined the moderating effects of(More)
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