🧠 The default mode network is a brain network that has been correlated with changes in various mental states and disorders, such as depression, anxiety, ADHD, PTSD, and borderline personality disorder.
🔗 Psychedelics like LSD, psilocybin, MDMA, and salvia have been shown to reduce activity in the default mode network, leading to a sense of ego dissolution and potential therapeutic benefits.
📚 The default mode network has been extensively studied since its discovery in 2001, with research focusing on its function, connectivity, and role in different states and processes within the brain.
The default mode network is a set of brain regions that decrease their activity when engaged in cognitively demanding tasks.
FMRI studies have shown that the default mode network exhibits coordinated activity even during rest.
Functional connectivity analysis reveals that the default mode network is correlated and synchronized in its activity.
The default mode network is a constellation of networks in the brain that go up and down in activity together.
The default mode network is present in all mammalian species and has similar gene expression properties across different brain regions.
The default mode network is involved in maintaining an internal ecosystem model of the external world.
🧠 The default mode network (DMN) is a set of brain areas that are less active during external tasks and more active during introspection. It plays a role in self-referential thinking and may be implicated in depression and anxiety.
🌌 Psychedelics may disrupt the connections within the DMN, leading to increased psychological flexibility and openness. This temporary plasticity could provide a window for new ways of thinking and may have potential therapeutic applications.
💡 Studies in mice and a patient with seizures have shown that electrical stimulation of a specific part of the DMN, the retrosplenial cortex, can recreate dissociative experiences similar to those induced by psychedelics.
🧠 The default mode network and its involvement in memory and spatial navigation go through different states throughout the day, including encoding state and dream state.
💊 Psychedelics may put the brain into a state similar to REM sleep, allowing for subjective experiences that are not constrained by the environment, which could potentially have therapeutic effects for patients.
🔬 There are ongoing research questions regarding the specificity of changes in the default mode network caused by psychedelics and the potential confounding effects of vasoactive drugs.
🧠 The default mode network plays a crucial role in personal spatial organization and can be affected in conditions like hemi neglect.
💊 Psychedelic experiences may produce temporary states that can be accessed without the need for stroke, seizures, or invasive procedures.
💡 The development and maturation of the default mode network in humans is still not fully understood, but it seems to be present at birth and undergoes changes during sleep.
🌌 The psychedelic experience may involve a combination of awake hippocampal recording and perceptual disturbances, potentially shaping perceptions and memories in a unique way.
🧪 Different psychedelic substances may modify the functioning of the default mode network in different ways, leading to diverse experiences.
🧠 Alzheimer's disease affects the default mode network and may result in symptoms like loss of self-orientation and confusion.
🧠 Further research is needed to understand the enduring effects of psychedelics on the default mode network and its activity.
🧠 The default mode network (DMN) and external focus network in the brain are mutually inhibitory, and changes in their balance can lead to profound changes in perception.
🕰️ Performance variability in repetitive tasks is related to the rhythmicity of brain states, such as the theta and ripple states, which occur unconsciously but can be influenced by mind wandering.
🧘♂️ The structure and function of the default mode network differ between humans and non-human primates, with parietal areas playing a more motor planning role in primates.
🤔 The existence of slightly different brain maps among mammals suggests that consciousness may be a continuum rather than a binary concept.
🌌 The inner play between the allocentric and egocentric systems in the brain, and the interplay between different parts of the brain in creating an internal model, have implications for consciousness.
🧙♂️ The discussion on these topics leads to new insights and prompts researchers to rethink their understanding of the brain and consciousness.
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