deepstash

Beta

What Near-Death Experiences Reveal about the Brain

Deepstash brings you key ideas from the most inspiring articles like this one:

Read more efficiently

Save what inspires you

Remember anything

https://www.scientificamerican.com/article/what-near-death-experiences-reveal-about-the-brain/

scientificamerican.com

What Near-Death Experiences Reveal about the Brain
Scientific American is the essential guide to the most awe-inspiring advances in science and technology, explaining how they change our understanding of the world and shape our lives.

5

Key Ideas

Save all ideas

Near-death experiences (NDEs)

Near-death experiences (NDEs)

NDEs are triggered during a life-threatening situation when the body is injured by blunt trauma, e.g., a heart attack or shock.

Many survivors tell of leaving their damaged...

97 SAVES


Negative NDEs experiences

Not all NDEs are positive - some can be frightening, with intense terror, anguish, loneliness, and despair. Distressing NDEs are underreported because of shame, social stigma, and ...

95 SAVES


The NDE phenomenon

A 2017 study found that NDEs were recalled with greater clarity and detail than either real or imagined situations were. In other words, NDEs were remembered as being more real than life itself.

104 SAVES


NDEs within a natural framework

When the body is starved of blood flow and oxygen, the electrical activity in the brain has broken down. Like a town that loses power one neighborhood at a time, regions of the bra...

105 SAVES


The fading of the light

Many neurologists have noted similarities between NDEs and the effects of complex partial seizures. These seizures are localized to specific brain regions in one hemisphere and are accompa...

99 SAVES


SIMILAR ARTICLES & IDEAS:

About Consciousness

About Consciousness

Consciousness is everything you experience - taste, pain, love, feeling. Where these experiences come from is a mystery.

Many modern analytic philosophers of mind either d...

Searching For Physical Footprints

What is it about brain matter that gives rise to consciousness? In particular, the neuronal correlates of consciousness (NCC) - the minimal neuronal mechanisms jointly sufficient for any conscious experience.

Consider this question: What must happen in your brain for you to experience a toothache?

Neuronal Correlates of Consciousness (NCC)

The whole brain can be considered an NCC because it generates experience continually.

  • When parts of the cerebellum, the "little brain" underneath the back of the brain, are lost to a stroke or otherwise, patients may lose the ability to play the piano, for example.  But they never lose any aspect of their consciousness. This is because the cerebellum is almost wholly a feed-forward circuit. There are no complex feedback loops.
  • The spinal cord and the cerebellum are not enough to create consciousness. Available evidence suggests neocortical tissue in generating feelings.
  • The next stages of processing are the broad set of cortical regions, collectively known as the posterior hot zone, that gives rise to conscious perception. In clinical sources of causal evidence, stimulating the posterior hot zone can trigger a diversity of distinct sensations and feelings.
  • It appears that almost all conscious experiences have their origin in the posterior cortex. But it does not explain the crucial difference between the posterior regions and much of the prefrontal cortex, which does not directly contribute to subjective content.

3 more ideas

Sleep Paralysis

Sleep Paralysis

Apparent hallucinations of a dark monster holding the sleeping person, while he or she is unable to move or speak, is a phenomenon that is experienced by one-fifth of the population at least once.

The Scientific Explanation Of Sleep Paralysis

Scientists claim a brain glitch blurs the wakefulness and Rapid Eye Movement (REM) modes of sleep, making the dreams come out in the real world, creating a hallucination.

To prevent you from acting out these dreams, the brain paralyses your body. Sometimes this mechanism fails and you see your dream in augmented reality in the real world.

Cultural Interpretations of Sleep Paralysis

The Egyptians referred to sleep paralysis as something caused by a ‘Jinn’, which terrorizes and even kills the victims. Italians refer to this figure as Pandafeche, a giant cat.

South Africans interpret this as small creatures known as tokoloshe, who perform black magic, while in Turkey the creature has another name, the Karabasan.

one more idea

Performer - audience synchrony

Performer - audience synchrony

When you are at a concert and you get to the part with a refrain from your favorite song, you are swept up in the music. The performers and audience seem to be moving as one.

Rese...

Dancing to the same emotions

The synchrony between the brain activity of a performer and his audience shows insights into the nature of musical exchanges: we dance and feel the same emotions together, and our neurons fire together as well. This is especially true when it comes to the more popular performances.

Synchronous brain activity was localized in the left hemisphere of the brain (temporal-parietal junction). This area is important for empathy, the understanding of others’ thoughts and intentions, and verbal working memory used for expressing thought.

Music and the right hemisphere of the brain

The right brain hemisphere is most often associated with the interpretation of musical melody.

In the right hemisphere, synchronization is localized to areas involved in recognizing musical structure and pattern (the inferior frontal cortex) and interpersonal understanding (the inferior frontal and postcentral cortices).

3 more ideas