Leandro da Costa Lane Valiengo

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IMPORTANCE Transcranial direct current stimulation (tDCS) trials for major depressive disorder (MDD) have shown positive but mixed results. OBJECTIVE To assess the combined safety and efficacy of tDCS vs a common pharmacological treatment (sertraline hydrochloride, 50 mg/d). DESIGN Double-blind, controlled trial. Participants were randomized using a 2 ×(More)
BACKGROUND Despite significant advancements in psychopharmacology, treating major depressive disorder (MDD) is still a challenge considering the efficacy, tolerability, safety, and economical costs of most antidepressant drugs. One approach that has been increasingly investigated is modulation of cortical activity with tools of non-invasive brain(More)
Strong evidence implicates intracellular signaling cascades dysfunction in the pathophysiology of Bipolar Disorder (BD). Regulation of AKT/mTOR pathway is a critical signaling pathway in synaptic neurotransmission and plasticity, also modulating cell proliferation and migration. Gene expression of the AKT/mTOR pathway was assessed in 25 BD (DSM-IV-TR(More)
The findings for implicit (procedural) learning impairment in major depression are mixed. We investigated this issue using transcranial direct current stimulation (tDCS), a method that non-invasively increases/decreases cortical activity. Twenty-eight age- and gender-matched, antidepressant-free depressed subjects received a single-session of active/sham(More)
Based on previous studies showing that transcranial direct current stimulation (tDCS), a non-invasive brain stimulation technique that employs weak, direct currents to induce cortical-excitability changes, might be useful for working memory (WM) enhancement in healthy subjects and also in treating depressive symptoms, our aim was to evaluate whether tDCS(More)
PURPOSE To determine whether patients with comorbid epilepsy and psychogenic nonepileptic seizure (PNES) and their caregivers can distinguish between these two events at least one year after initial diagnosis, and to investigate factors associated with correct identification. METHODS Adult patients with at least a one year diagnosis of both epilepsy and(More)
BACKGROUND Based on findings that major depressive disorder (MDD) is associated to decreased dorsolateral prefrontal cortical (DLPFC) activity; interventions that increase DLPFC activity might theoretically present antidepressant effects. Two of them are cognitive control therapy (CCT), a neurocognitive intervention that uses computer-based working memory(More)
OBJECTIVE Our aim was to evaluate whether one single section of transcranial direct current stimulation (tDCS), a neuromodulatory technique that noninvasively modifies cortical excitability, could induce acute changes in the negative attentional bias in patients with major depression. SUBJECTS AND METHODS Randomized, double-blind, sham-controlled,(More)
Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation intervention that modifies cortical excitability according to the stimulation parameters. Preclinical and clinical studies in healthy volunteers suggest that tDCS induces neuroplastic alterations of cortical excitability, which might explain its clinical effects in major(More)
Objective: Our aim was to evaluate whether one single section of transcranial direct current stimulation (tDCS), a neuromodulatory technique that non-invasively modifies cortical excitability, could induce acute changes in affective processing in patients with major depression. enrolling 24 age-, gender-matched, drug-free, depressed subjects. Anode and(More)