Jack Sheen

University of Toronto | U of T · Institute of Medical Sciences

Background and objective Repetitive transcranial magnetic stimulation (rTMS) is an effective and safe treatment for major depressive disorder (MDD). rTMS is in need of a reliable biomarker of treatment response. High frequency (HF) dorsolateral prefrontal cortex (DLPFC) rTMS has been reported to induce significant changes in the cardiac activity of...

Intermittent theta burst stimulation (iTBS) using 600 pulses is an effective and FDA-cleared transcranial magnetic stimulation (TMS) protocol for major depressive disorder (MDD). Prolonged iTBS (piTBS) using 1,800 pulses could increase the effectiveness of TMS for MDD, but its real-world effectiveness is still debated. We assessed the safety, toler...

Introduction: This study explores the relationship between emotional support, perceived risk and mental health outcomes among health care workers, who face high rates of burnout and mental distress since the beginning of the COVID-19 pandemic. Methods: A cross-sectional, multicentred online survey of health care workers in the Greater Toronto Ar...

Introduction Cette étude explore la relation entre le soutien émotionnel, le risque perçu et les résultats en matière de santé mentale chez les travailleurs de la santé, qui font face à des taux élevés d’épuisement professionnel et de détresse mentale depuis le début de la pandémie de COVID-19. Méthodologie Une enquête transversale a été menée en...

Objective Explore how previous work during the 2003 Severe Acute Respiratory Syndrome (SARS) outbreak affects the psychological response of clinical and non-clinical healthcare workers (HCWs) to the current COVID-19 pandemic. Methods A cross-sectional, multi-centered hospital online survey of HCWs in the Greater Toronto Area, Canada. Mental health...

BACKGROUND Major depressive disorder (MDD) is now the first cause of disability worldwide. So far, no validated and scalable biomarker has been identified to help with response prediction to antidepressant treatment. Cardiac biomarkers such as heart rate variability (HRV) have been studied in MDD, but few studies have examined its potential use for...

Although effective in major depressive disorder (MDD), repetitive transcranial magnetic stimulation (rTMS) is costly and complex, limiting accessibility. To address this, we tested the feasibility of novel rTMS techniques with cost-saving opportunities, such as an open-room setting, large non-focal parabolic coils, and custom-built coil arms. We em...

BACKGROUND Repetitive transcranial magnetic stimulation (rTMS) is an effective intervention in major depressive disorder (MDD) but requires daily travel to a treatment clinic over several weeks. Shorter rTMS courses retaining similar effectiveness would thus increase the practicality and scalability of the technique, and therefore its accessibility...

BACKGROUND Repetitive transcranial magnetic stimulation (rTMS) is an effective intervention in major depressive disorder (MDD) but requires daily travel to a treatment clinic over several weeks. Shorter rTMS courses retaining similar effectiveness would thus increase the practicality and scalability of the technique, and therefore its accessibility...

BACKGROUND Repetitive transcranial magnetic stimulation (rTMS) is effective in major depressive disorder (MDD). However, technical complexity and operational costs might have been barriers for its wide use and implementation in some jurisdictions, thereby decreasing accessibility. OBJECTIVE Our main goal was to test the feasibility of a novel rTMS...

Background Dorsomedial prefrontal cortex (DMPFC) repetitive transcranial magnetic stimulation (rTMS) is a novel intervention for treatment-refractory depression (TRD). To date, many open-label case series and one randomized controlled trial of modest sample size have provided preliminary evidence that DMPFC-rTMS is an effective treatment for TRD. H...