Neuroscience – Lifeboat News: The Blog

Feb 21
2020

Researchers wake monkeys

A small amount of electricity delivered at a specific frequency to a particular point in the brain will snap a monkey out of even deep anesthesia, pointing to a circuit of brain activity key to consciousness and suggesting potential treatments for debilitating brain disorders.

Macaques put under with general anesthetic drugs commonly administered to human surgical patients, propofol and isoflurane, could be revived and alert within two or three seconds of applying low current, according to a study published today in the journal Neuron by a team led by University of Wisconsin–Madison brain researchers.

“For as long as you’re stimulating their brain, their behavior — full eye opening, reaching for objects in their vicinity, vital sign changes, bodily movements and facial movements — and their brain activity is that of a waking state,” says Yuri Saalmann, UW–Madison psychology and neuroscience professor. “Then, within a few seconds of switching off the stimulation, their eyes closed again. The animal is right back into an unconscious state.”

Feb 21
2020

Your brain waves could predict if an antidepressant will work for you

A new study suggests a better way to match patients with depression to a medication.

Feb 21
2020

Want to Look Inside a Brain? With Transparent Organs, You Can

Using clever chemical wizardry, researchers have made human organs see-through. The dazzling 3D maps could one day lead to organs made in the lab.

Feb 20
2020

God and your cosmic consciousness in the quantum cloud

In my previous post “Cryonics for uploaders: WTF is consciousness?” I didn’t elaborate on the spiritual implications of emerging theories of consciousness and reality. Here’s a unified theory of consciousness, physics, Deity, reincarnation, afterlife, eschatology, and theo/technological resurrection wink

Feb 20
2020

Scientists Scanned Brains of Bullies and Found Something Grim

A key exception: The brains of people who exhibited anti-social behavior as teenagers but not as adults showed no such abnormalities. That’s good news for reformed bullies, but bad news for the lifers.

“Most people who exhibit antisocial behaviour primarily do so only in adolescence, likely as a result of navigating socially difficult years, and these individuals do not display structural brain differences,” Carlisi said. “It is also these individuals who are generally capable of reform and go on to become valuable members of society.”

What remains hazy is the question of causation — are the brains of bullies small because they’re bullies, or do they become bullies because of their small brains?

Feb 20
2020

Musician Plays Her Violin During Brain Surgery

Doctors wanted to ensure they didn’t compromise parts of the brain necessary for playing the violin, so they asked their musician patient to play for them mid-operation.

Feb 19
2020

Long-term offenders have different brain structure, study says

Study found differences compared with those who did not offend or who only transgressed as adolescents.

Feb 18
2020

Psychedelic drugs may transform mental health care. And big business is ready to profit from the revolution

Silicon Valley legends. Billionaire financiers. Patent attorneys. They’re all awakening to the massive potential of an industry preparing to emerge from darkness.

Feb 18
2020

Binaural beats synchronize brain activity, don’t affect mood

An auditory illusion thought to synchronize brain waves and alter mood is no more effective than other sounds, according to research in adults recently published in eNeuro. The effect reported in other studies might be a placebo but could still have helpful effects for some people.

Binaural beats are an auditory illusion caused by listening to two tones of slightly different frequency, one in each ear. The difference in frequencies creates the illusion of a third sound — a rhythmic beat. Neurons throughout the brain begin to send electrical messages at the same rate as the imaginary beat. Many unsupported claims surround binaural beats, including that listening to them decreases anxiety, increases focus, and improves mood.

Orozco Perez et al. played binaural and monoaural beats to healthy adults and measured their brain activity with electroencephalography. Monoaural beats don’t rely on the illusion to create the beats because they consist of edited audio tracks of the two different tones together. Both ears hear all three sounds. Brain activity synchronized with both types of beats, but the effect was stronger with monoaural beats. Neither type of beat affected mood. When the binaural beat played, far apart brain areas synchronized with each other at a different frequency than the beat. This may be how binaural beats improve memory and focus.

Feb 17
2020

Looking To Bionic Eyesight

After being blind for 16 years, scientists have plugged a bionic eye directly into Bernardeta Gomez’s brain, allowing her to see again without using her biological eyes after she had a computer port surgically embedded into her skull.

The vision system is being honed by neuriengineer Eduardo Fernandez in his lab at the University of Miguel Hernandez, and it is comprised of a few different parts according to the publication in MIT Technology Review.

There is a pair of glasses that are fitted with a camera that connects to a computer which translates the live video feed into electronic signals that are then sent via a cable to the port which has been surgically embedded into the back of Gomez’s skull and connects to an implant in the visual cortex of her brain.