Voice hearing (VH) is a transdiagnostic experience that is common in trauma-related disorders. However, the neural substrates that underlie trauma-related VH remain largely unexplored. While auditory perceptual dysfunction is among the abnormalities implicated in VH in schizophrenia, whether VH in trauma-related disorders also involves auditory perceptual alterations is unknown. We investigated...
A recent study by Wu, Podvalny, and colleagues investigated how ongoing spontaneous brain activity interacts with sensory input and shapes conscious perception. It reports diverse effects of prestimulus activity in several key networks, revealing new roles of the prefrontal cortex and the default mode network in perception and consciousness.
Treatment-resistant depression (TRD) is defined as patients diagnosed with depression having a history of failure with different antidepressants with an adequate dosage and treatment duration. The NMDA receptor antagonist ketamine rapidly reduces depressive symptoms in TRD. We examined neural correlates of treatment response to ketamine in TRD through a systematic review of brain magnetic...
Introduction. High levels of anxiety are often associated with abnormal activity in the brain areas involved in emotional processing, cognitive control, and reduced connectivity in the default mode network (DMN). Studies also show that the activation of the DMN increases during self-reflection processes, especially positive self-reference, suggesting the possibility of using self-reflection to...
For 3000 years, psychedelics have been used in religious contexts to enhance spiritual thinking, well-being, and a sense of community. In the last few years, a renaissance in the use of psychedelic drugs for mental disorders has occurred in Western society; consequently, a pressing scientific need to elucidate the intricate mechanisms underlying their actions has arisen. Psychedelics mainly...
Neuropathic pain (NP), a debilitating and chronic condition often accompanied by comorbid depression, presents significant therapeutic challenges. While conventional pharmacological treatments, though valuable, usually fall short in addressing their multifaceted nature, the pursuit of innovative solutions has led to the exploration of ayahuasca , a psychedelic brew originating from Amazonian...
Abstract Psilocybin is a classic psychedelic and a novel treatment for mood disorders. Psilocybin induces dose-dependent transient (4-6 hours) usually pleasant changes in perception, cognition, and emotion by non-selectively agonizing the 5-HT 2A receptors and negatively regulating serotonin reuptake, and long-term positive antidepressant effect on mood and well-being. Long-term effects are...
Differentiate between classic psychedelics and their mechanisms of action. Describe how psychedelics influence brain networks, particularly the default mode network, and explain the potential therapeutic implications of these effects on conditions like depression. Outline the key components of psychedelic-assisted therapy, including preparation, support during the psychedelic session, and...
Psychedelic MedicineSeptember 1, 2024Banan Ramarushton, Heidemarie Blumenthal, Anthony Ryals et al.2 citations
Rumination is a well-established risk factor for the onset and maintenance of depression and anxiety and is associated with various other forms of psychopathology (e.g., eating pathology, obsessive-compulsive disorder, posttraumatic stress disorder). Evidence suggests that rumination is a transdiagnostic process that may play a key role in the comorbidity of such disorders. However, rumination...
Psychedelics can induce mystical experiences, with higher Mystical Experience Questionnaire scores correlating with greater therapeutic effects like reduced cravings and anxiety. Psychedelics disrupt the default mode network, which is implicated in psychiatric conditions and sense of self, potentially reducing negative self-referential thinking. Psychedelics may disrupt the claustrum, inducing...