The release of 2-AG, a natural endocannabinoid that is suggested to be the brain's equivalent to THC, dampens down seizure activity but increases post-seizure oxygen deprivation in the brain.
People who practice meditation often report feeling "pure awareness" in which they say they experience consciousness itself. The state encompasses specific sensations and non-specific feelings, thoughts, and perceptions. Researchers say their findings will help explain "pure consciousness," and work to generate a prototypical minimal model for human conscious perception.
Study reveals people who experience intense visual imagery during a Ganzflicker test have naturally lower frequency rhythms in the visual cortex, making them more susceptible to pseudo-hallucinations.
Following a potentially life-threatening event, people often report seeing their "lives flashing before their eyes", where a multitude of memories from life events are recalled almost instantaneously. Researchers present theories on why this phenomenon may occur.
Giving up the theory that consciousness is like a "ghost in the machine" to focus on the neurobiology of brain mechanisms behind conscious awareness is an essential step to better understand the human mind, researchers argue.
A new study brings into question conventional theories of the neuroscience of free will. Researchers found readiness potential reflects neural activity that underlies the formation of a decision to move, rather than the outcome to move.
Following deep anesthesia, consciousness and cognitive processes unfold over time. The prefrontal cortex is the first brain area to recover, with areas associated with reaction time and attention taking longer to return to pre-anesthesia states.
New research indicates the existence of an unconscious iconic memory store that supports predictions made by the global workspace theory of consciousness. It also shows that visual masking does not erase memory traces of masked stimuli but only limits conscious access.
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A newly developed artificial intelligence algorithm can accurately and reliably assess unconsciousness in patients under anesthesia based on brain activity.
Propofol, the commonly used anesthetic, alters and controls the dynamics of the brain's rhythms. The findings can help doctors better monitor patients under anesthesia with the aid of EEG.