Publications by authors named "Christian Gaudeau-Bosma"

Background: Major depressive disorder is one of the leading causes of disability worldwide. Although most international guidelines recommend psychological and psychosocial interventions as first-line treatment for mild to moderate depression, access remains limited in France due to the limited availability of trained clinicians, high costs for patients in the context of nonreimbursement, and the fear of stigmatization. Therefore, online blended psychological treatment such as Deprexis could improve access to care for people with depression.

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Background: Intermittent theta burst stimulation (iTBS) is a form of repetitive transcranial magnetic stimulation that has shown to be effective in treatment-resistant depression. Through studying the effect of iTBS on healthy subjects, we wished to attain a greater understanding of its impact on the brain. Our objective was to assess whether 10 iTBS sessions altered the neural processing of emotional stimuli, mood and brain anatomy in healthy subjects.

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Article Synopsis
  • Women experience depression and anxiety disorders at twice the rate of men, potentially due to greater sensitivity to negative emotions; this study aimed to explore brain activity differences between genders during emotional tasks.
  • A functional MRI study with 30 healthy participants (15 men, 15 women) showed no significant interaction effect in stimuli responses, but revealed increased activity in women's right fusiform gyrus when viewing negative images.
  • These findings suggest a connection between fusiform gyrus activity and women's heightened vulnerability to anxiety disorders, providing insights for future research.
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We here report paradoxical hand function recovery in a 61-year-old male tetra-paretic chronic patient following a stroke of the brainstem (with highly degraded right and abolished left-hand finger flexion/extension disabling him to manipulate objects) who experienced insidious auditory hallucinations (AHs) 4 years after such event. Symptomatic treatment for AHs was provided with periodical double sessions of low-frequency repetitive transcranial magnetic stimulation (rTMS) (daily 1 Hz, 2 × 1,200 pulses interleaved by 1 h interval) delivered to the left temporoparietal junction across two periods of 5 and 3 weeks, respectively. At the end of each stimulation period, AHs disappeared completely.

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Background: Repetitive transcranial magnetic stimulation has been explored in patients with obsessive-compulsive disorder, but with negative or conflicting results. This randomized double-blind study was designed to assess the efficacy of 1-Hz repetitive transcranial magnetic stimulation over the presupplementary area.

Methods: Forty medication-resistant patients were assigned to 4 weeks of either active or sham repetitive transcranial magnetic stimulation targeting the presupplementary area with the help of a neuronavigation system.

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Background: High frequency repetitive transcranial magnetic stimulation (rTMS) of the left dorsolateral prefrontal cortex (DLPFC) has shown significant efficiency in the treatment of resistant depression. However in healthy subjects, the effects of rTMS remain unclear.

Objective: Our aim was to determine the impact of 10 sessions of rTMS applied to the DLPFC on mood and emotion recognition in healthy subjects.

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Article Synopsis
  • rTMS has proven effective in treating psychiatric disorders, targeting the DLPFC, but its impact on cognitive functions is unclear.
  • A randomized double-blind study involved 20 subjects undergoing either active rTMS or a placebo while performing a working memory task (n-back).
  • Results showed no significant changes in mood or task performance, but notable effects were observed in brain regions related to working memory, indicating potential rTMS effects on cognitive processing.
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