Articles tagged with Consciousness
Scientists have identified key stages in the 'wave of death' - a high-amplitude wave that marks the transition to complete brain silence after oxygen deprivation. The study found that this critical event induces neuronal death throughout the cortex and can be reversible with timely resuscitation.
Researchers found that babies as young as four months old display enhanced somatosensory brain activity when a touch is preceded by an object moving towards them. This suggests that even in the first few months of life, babies can sense their surroundings and understand how their bodies interact with space.
A recent study on psychic channeling experiences found little correspondence among channelers' answers to scientific questions, yet common themes emerged in the qualitative analysis. The results raise important questions about the complex phenomenon of channeling and its potential usefulness for future research.
A new study on visual masking reveals the brain's role in perception and points to a region necessary for conscious awareness. The research shows that unconscious sensation can turn into conscious perception in the brain, with implications for understanding visual awareness.
ASMR clips have been found to induce short-term positive effects on mood and physiology in approximately 25-30% of viewers. EEG studies also show a decrease in delta waves associated with deep sleep, while fMRI studies reveal specific brain areas involved in the ASMR experience.
Research suggests that consciousness requires synchronized communication across cortical regions; propofol general anesthesia cancels sensory processing by cutting it off. Neural activity in higher-level processing and cognitive regions fails to propagate during anesthesia.
Researchers at MIT and MGH have developed a closed-loop system that monitors brain state to tailor propofol dose and achieve exactly the desired level of unconsciousness. This technology enables more than 18 hours of fine-grained consciousness control, reducing postoperative cognitive side effects in vulnerable groups.
A nationwide study by Radboud University Medical Center found that approximately 32 patients in the Netherlands are in a minimally conscious state after severe brain injury. These patients were on average 45 years old and showed signs of consciousness, such as following simple commands or showing emotions.
A study published in Trends in Cognitive Science found that infants are capable of conscious experiences from birth, which can shape their sense of self and understanding of the environment. This breakthrough has important implications for clinical, ethical, and legal aspects of infant care and development.
A new editorial addresses clinician burnout by proposing a unifying systems medicine model that incorporates biological, psychological, environmental, and consciousness factors. The authors suggest that Transcendental Meditation can enhance resilience and prevent burnout-related mind-body conditions.
The Open Encyclopedia of Cognitive Science (OECS) is a dynamic web reference that will equip readers with essential tools to grapple with the profound implications of cognition and intelligence in today's society. With generous funding from James S. McDonnell Foundation and the Allen Institute for AI, the first set of articles will be ...
A study published in Resuscitation found that some patients who suffered cardiac arrest reported lucid memories of experiencing death, while brain activity showed signs of electrical recovery and higher mental function. This new work sheds light on the phenomenon of near-death experiences and may guide the design of new treatments.
Researchers have identified patterns of brain injury that underlie hidden consciousness, a phenomenon where brain-injured patients appear unconscious despite having some level of awareness. The study found that all patients with hidden consciousness had intact brain structures related to arousal and command comprehension.
HBP researchers used glucose uptake to locate alpha waves' generation, finding subcortical areas drive cortical activity associated with consciousness. The study reveals an inverted u-shape relation between alpha power and brain function in patients with disorders of consciousness.
Researchers at Lund University discovered that psychedelic substances LSD and ketamine cause simultaneous synchronisation of neurons in several brain regions. This phenomenon is linked to the psychedelic experience and may hold clues for understanding psychoses and consciousness.
A recent study revealed that attention plays a crucial role in shaping our conscious experience of the world. Researchers found that manipulating attention can modify an individual's ability to consciously perceive visual stimuli, highlighting the intricate relationship between attention and conscious perception. By using advanced neur...
Scientists have identified a region of the brain where sustained visual images are retained during perception. This finding may help doctors determine whether coma patients are still aware of their surroundings and could lead to treatments for disorders of consciousness.
Hypnosis expert Steven Jay Lynn challenges common misconceptions about the practice, highlighting its clinical applications and effectiveness. Research reveals that hypnotized individuals can resist suggestions, retain voluntary control, and even exhibit brain activity consistent with reported experiences.
Researchers at ETH Zurich discovered that orexin neurons directly influence emotional state through pupil size. This finding opens new avenues for medical treatment and diagnosis of sleep disorders like narcolepsy and other neurological conditions.
A study at University of Turku found that reduced central thalamic nuclei activity is related to anesthesia-induced disconnectedness for propofol, dexmedetomidine, and sevoflurane. In contrast, S-ketamine was associated with increased left parietal cortex activity during disconnection.
The study identified two relevant circuits in patients with disorders of consciousness (DoC), including the thalamo-frontotemporal region and the posterior cortical region. These findings bring a new understanding of brain networks and could improve diagnosis and treatment for people suffering from DoC.
A new study found that marathon running causes significant damage to extrinsic foot muscles, while intrinsic muscles are less affected. The research suggests that marathon runners can take steps to prevent injuries by prioritizing recovery and muscle fatigue management.
A study by Michigan Medicine researchers found that nitrous oxide, LSD, and ketamine induce similar changes in brain connectivity, particularly in the cortical 'hot zone' where conscious experience is determined. This common biology may hold the key to using psychedelics as therapeutics.
Researchers at MIT's Picower Institute have developed a new method to measure consciousness without external stimulation, using a breathing task internally prompted by the subject. This approach detected loss of responsiveness at lower concentrations of anesthetic than previous methods, suggesting it is more sensitive.
Researchers discovered that great apes deliberately spin themselves to dizzy, mimicking human behaviors like whirling dervishes. This study suggests that humans may have inherited the need for altered states from their evolutionary ancestors.
Consciousness in animals may be more nuanced than previously thought. Researchers at Ruhr-University Bochum suggest ten dimensions of consciousness that cannot be ranked. Strong indicators include complex perception and episodic memory, while weak indicators are simple sensory processing and categorization abilities.
A 15-year study found that group practice of Transcendental Meditation and its advanced aspect, TM-Sidhi, may help counter the rising trends in US drug overdose deaths. The study estimated that 34,194 drug-related fatalities may have been averted as a result of the decline in drug-related fatality rate during the demonstration phase.
The Cognitive Neuroscience Society Conference in San Francisco will explore the nature of thinking and memory. Highlights include presentations on aging, neurotechnology, and learning.
A new study maps consciousness to brain geometry, revealing three cortical gradients that align with dimensions of consciousness. The findings have potential for developing brain-based diagnoses or assessments for neurologic patients.
Researchers found that a single psychedelic experience increased nonphysicalist beliefs and beliefs about consciousness, meaning and purpose. The magnitude of belief changes was associated with qualitative features of the experience. A significant increase in 'believers' was also observed after the experience.
Researchers found that substantial exercise, sleeping longer and later, and eating a low sugar, high carb breakfast can increase alertness. A high carbohydrate breakfast was linked to individuals revving up their alertness quickly in the morning.
Researchers propose that the claustrum functions as an internet router, amplifying and broadcasting signals to facilitate cognitive tasks. This theory challenges Francis Crick's idea that the claustrum is the seat of consciousness, suggesting a more distributed role in awareness.
Researchers propose that delayed recoveries in COVID-19 patients may be due to a protective response from their brains, similar to those seen in animals exposed to extreme conditions. This theory could lead to new approaches for ICU sedation and recovery from disorders of consciousness.
Researchers at MIT's Picower Institute suggest that Covid-19 patients in comas may enter a protective hibernation state to shield cells from oxygen scarcity. This hypothesis is supported by observations of cardiac arrest patients treated with hypothermia and the painted turtle, which also enters a similar state during prolonged anoxia.
A Boston University researcher proposes a new explanation for consciousness, suggesting it evolved as an unconscious memory system. According to the theory, our decisions and actions are made unconsciously, but we perceive them consciously only after a brief delay.
A study by the Human Brain Project distinguished between two neurological conditions using state-of-the-art techniques. The results reveal important information about the mechanisms of consciousness disorders, including altered brain dynamics and reduced functional network activity.
Researchers at Stevens Institute of Technology have developed an algorithm that can accurately track patients' level of consciousness using simple physiological markers. The algorithm proved as accurate as a trained clinical examiner, only slightly less accurate than expensive imaging equipment like fMRI machines.
Researchers used functional magnetic resonance imaging (fMRI) data to analyze dynamic functional connectivity and structural white matter connections. The study revealed that unresponsive wakefulness syndrome patients had less activity in functional networks and a reduction of metastability compared to minimally conscious state patients.
A study of 3,192 participants found that both psychedelic drugs and near-death experiences can decrease fear of death and increase feelings of spirituality. However, those with non-drug near-death experiences reported a more meaningful experience overall.
Ben-Gurion University researchers Dr. Moti Salti and Dr. Dafna Bergerbest propose a framework to objectively compare subjective experiences and reveal their neuronal basis. They focus on numerosity as a field where objective criteria can be established, aiming to map individual transfer-functions at both behavioral and neuronal levels.
Researchers identified regions in the cerebral cortex and thalamus with high bidirectional connections, which are thought to be essential for consciousness. The findings support the idea that these networks are key to pinpointing the location of consciousness.
A new study found that subtle brainwaves detectable with EEG are the strongest predictor of eventual recovery for brain-injured patients who appear unresponsive. Covert consciousness, detectable through customized artificial intelligence software, is linked to higher and faster rates of recovery.
A new universal approach to mental health issues has been developed, utilizing 20 years of research on artificial intelligence, consciousness, perception, and mental health. This approach prioritizes patient control, allowing the conscious mind to work on resolving difficulties, similar to a mechanic assessing a car.
A series of FQXi-funded experiments deep under the Italian mountains failed to find evidence in support of a gravity-related quantum collapse model, undermining the feasibility of this explanation for consciousness. The team used an extremely sensitive cylindrical detector and reported no spontaneous radiation signals after running the...
A recent study published in Neuron reveals that general anesthesia induces synchronized activity in layer 5 pyramidal neurons, leading to the loss of consciousness. This finding has significant implications for the development of better anesthetic drugs and improved surgical outcomes.
A new study by MIT scientists reveals that propofol anesthesia significantly alters the state of brain waves, with lower frequency delta waves dominating. Higher frequency beta waves decrease in structure and power, with their traveling nature disrupted by the surging delta waves. The findings suggest a profound impact on consciousness.
A survey of 441 Germans found that environmental concerns do not drive demand for meat substitutes, but rather attitudes towards animal welfare and health. Manufacturers are advised to highlight the ecological advantages and healthier composition of their products.
A team of researchers from Kobe and Kyoto universities proposes an ethical framework for conducting research on conscious brain organoids. The framework assumes that brain organoids already possess consciousness and recommends guidelines similar to those for animal experiments. Key considerations include minimizing the number of organo...
A global team of experts has published guidelines for researching deaths and recalled experiences, suggesting that consciousness persists after death. The study highlights the need for further research into the nature of consciousness and its relationship to death.
A new Johns Hopkins study examines the link between psychedelics and consciousness, revealing a significant increase in attributing consciousness to various entities following a psychedelic experience. The study found that participants who reported belief-changing experiences showed substantial increases in attributing consciousness to...
Researchers reexamined hundreds of experiments on neural activity and consciousness, finding that experiment parameters determine results. The study used artificial intelligence to predict which theory would be supported by each experiment with 80% success.
A multicenter study found that COVID patients on ventilators often take weeks to regain consciousness after removal of respiratory support. The study also discovered a correlation between blood oxygen levels and the time it takes to recover, with patients experiencing more episodes of low oxygen taking longer to wake up.
Researchers found that low blood oxygen levels correlate with longer time to regain consciousness in patients with severe COVID-19. The study involved 795 patients and found that 72% recovered consciousness before hospital discharge, but 25% took 10 or more days to recover.
A new study by Weill Cornell Medicine and colleagues found that most COVID patients regain consciousness after removal of respiratory support, but may take weeks to recover. The study also showed that patients who experienced low blood oxygen levels during treatment took longer to recover consciousness.
A study by Johns Hopkins Medicine researchers found that psilocybin-assisted therapy can lead to significant and durable improvements in depression, with effects lasting at least a year for most patients. The treatment was shown to produce large decreases in depression severity and stable rates of response throughout the follow-up period.
Neurobiologists demonstrated that humans can unconsciously distinguish between even very similar sounds, but often don't recognize these differences. The study used EEG to measure brain responses to stimuli and found that the brain reacts differently to local and global irregularities in sound sequences.
Scientists found smaller, faster waves in the visual cortex that relate to how attentive the brain is. These wave patterns may help understand sleep, anesthesia, and attention by suppressing irrelevant information. The discovery could also improve artificial brains using machine learning techniques.
Researchers at Ruhr-University Bochum propose a new platform theory of consciousness, which links conscious states to complex cognitive operations. The model suggests that consciousness arises from the interaction of different neuronal networks and is essential for adaptive behavior in humans, animals, and artificial intelligence.
A study published in iScience reveals that distorted perception of bodily self-consciousness can be predicted by different kinds of memories. The researchers found that the recovery of body ownership was associated with a fast memory process, while agency recovery was mainly linked to a slow memory process.
A study by NYU researchers reveals that participating in arts programming enhances critical consciousness among youth of color and white youth alike, promoting greater awareness of social inequity. This breakthrough finding highlights the significance of arts programming as a site for developing critical consciousness.