Showing posts with label Biomedical. Show all posts
Showing posts with label Biomedical. Show all posts

Apr 26, 2017

5 Neuroscience Experts Weigh in on Elon Musk's Mysterious "Neural Lace" Company

Elon Musk has a reputation as the world’s greatest doer. He can propose crazy ambitious technological projects—like reusable rockets for Mars exploration and hyperloop tunnels for transcontinental rapid transit—and people just assume he’ll pull it off. 
So his latest venture, a new company called Neuralink that will reportedly build brain implants both for medical use and to give healthy people superpowers, has gotten the public excited about a coming era of consumer-friendly neurotech.
[ more ]

Mar 29, 2017

Transcranial alternating current stimulation used to boost working memory

Researchers at Imperial College London found that applying transcranial alternating current stimulation (tACS) through the scalp helped to synchronize brain waves in different areas of the brain, enabling subjects to perform better on tasks involving short-term working memory.

[ more ] [ paper ]

Mar 1, 2017

New brain map provides unprecedented detail in 180 areas of the cerebral cortex

A detailed new map by researchers at Washington University School of Medicine in St. Louis and associates* lays out the landscape of 180 areas of the cerebral cortex in painstaking detail; 97 of these areas have never been previously described. The new map is intended to help researchers studying brain disorders such as autism, schizophrenia, dementia and epilepsy. They will be able to use it to understand differences in the brains of patients with these diseases, compared with adults who are healthy. It also will accelerate progress in deciphering the workings of the healthy brain and elucidating what makes us unique as a species, the researchers say. The new map will also be vital for neurosurgeons.

[ more ]

Jan 26, 2017

Franka: A Robot Arm That’s Safe, Low Cost, and Can Replicate Itself

The robot, also called Franka Emika—“It’s like first and last name,” the developer Sami Haddadin explains—is not the only one ever designed to operate alongside human workers. Indeed, this type of system, known as a collaborative robot, or cobot, is one of the fastest growing segments in the robotics market, with global sales expected to jump from US $100 million in 2016 to over $3.3 billion in just five years, according to one estimate. It’s designed to be easy to set up and program, which is nice. But what makes it special is that, unlike typical factory robots, which are so dangerous they are often put inside cages, this arm can operate right next to people, assisting them with tasks without posing a risk.



[ more ]

Dec 29, 2016

Human Intelligence Through Brain Scans

Researchers at Yale led a study that demonstrate fluid intelligence (defined by abstract reasoning) can be measured by the functional connectivity of 268 specific brain regions. Emily Finn, co-author of this study, said, “The more certain regions are talking to one another, the better you’re able to process information quickly and make inferences.” Mostly, fluid intelligence had to do with the connections between the frontal and parietal lobes. The stronger and swifter the communication between these two regions, the better one’s score in the abstract thinking test.Earlier, same researchers have demonstrated that a person’s brain activity appears to be as unique as his or her fingerprints. Using brain imaging data, researcher were able to identify individuals.

[ more ] [ earlier ]

Dec 12, 2016

Space Telescope Tech Miniaturized to Look into the Brain

Optical technologies previously used to look at the stars in the sky will be miniaturized to look inside the brain, and could lead to new treatments for neurological diseases. The technologies once used to make corrections to space telescopes, along with new lasers, will help answer a fundamental question, according to Prakash Kara, Ph.D., a researcher at the Medical University of South Carolina. Kara is part of a team at MUSC that was awarded a $4 million grant from the National Science Foundation through its Experimental Program to Stimulate Competitive Research (EPSCoR). The grant will fund collaborative research between MUSC and the University of Alabama at Birmingham to map changes in blood flow when specific neurons in the brain fire.

Dr. Prakash Kara says new equipment funded by the grant will dramatically improve researchers' ability to capture images deep in the brain. (Credit: Sarah Pack)
[ more ]

May 25, 2015

Paralyzed man drinks beer using his imagination

A man who is paralyzed from the neck down was able to drink from a bottle of beer by using his imagination. Erik Sorto, 34, has been paralyzed for the last 13 years, but was able to use a robotic arm controlled by his thoughts recently via two silicon chips in his brain, which were able to determine what his intentions were and then send those commands to a prosthetic arm on a table nearby.

[ more ]

Flying a jet via mind control


Jan Scheuermann, a quadriplegic and pioneering patient for an experimental Pentagon robotics program, continues to break ground in freeing the mind from the body. The 55-year-old mother of two in 2012 agreed to let surgeons implant electrodes on her brain to control a robotic arm. More recently, she flew an F-35 Joint Strike Fighter simulator using nothing but her thoughts, an official said.
 
[ more ]

Feb 16, 2015

X-ray vision with safe, visible light

According to Nature, scientists are honing methods to reassemble scattered light that passes through opaque objects to create a usable image on the other side, enabling see-through (super!) vision of objects.

[ more ] [ link ]

Jan 31, 2015

Stroke Detecting Headset prototype from Samsung

Samsung’s Early Detection Sensor & Algorithm Package (EDSAP), developed by  Se-hoon Lim, is meant to detect early signs of stroke. A multiple sensor headset records electrical impulses in the brain, algorithms determine the likelihood of a stroke in one minute, and results are presented in a mobile app.  EDSAP can also analyze stress and sleep patterns, and potentially be used to monitor heart activity.  The company believes that the system can one day be built into one’s own glasses.

[ more ]

Nov 24, 2014

Playing action video games can boost learning



In the a new study, published in the Proceedings of the National Academy of Sciences, Bavelier and her team first used a pattern discrimination task to compare action video game players’ visual performance with that of individuals who do not play action video games.

The action-gamers outperformed the non-action gamers. The key to the action-gamers success, the researchers found, was that their brains used a better template for the task at hand.

[ more ] [ paper ]

Aug 8, 2014

Artificial Retina

Physicists developed an interface to the optical nerve using graphene for an optical prostheses.

Graphene is viewed as a kind of "miracle solution": It is thin, transparent and has a tensile strength greater than that of steel. In addition, it conducts electricity better than copper. Since it comprises only a single layer of carbon atoms it is considered two-dimensional.

 In 2010 the scientists Andre Geim and Konstantin Novoselov were awarded the Nobel Prize for their ground-breaking work on this material.

In October 2013, the "Graphene" project was selected alongside the "Human Brain Project" as a Flagship Project of the EU FET Initiative (Future and Emerging Technologies).

[ more ]

Jul 7, 2014

Brain controlled car steers, accelerates, brakes

AutoNOMOS and the Freie Universität Berlin  are developing BrainDriver, the first car that steers, accelerates, and brakes based on its driver’s thoughts. In a recent experiment, Henrik Matzke drove a car at speeds up to 31 mph.

[ more ]

May 27, 2014

First Tests of Thought-Controlled Aircraft Successful

Pilots of the future could be able to control their aircraft by merely thinking commands. Scientists of the Technische Universität München and the TU Berlin have now demonstrated the feasibility of flying via brain control – with astonishing accuracy.

(Photo : Courtesy A. Heddergott/TU München ) 

[ more ]

May 7, 2014

Mapping brain activity with molecular precision

A new technique allows neuroscientists to precisely track neural communication in the brain over time, using magnetic resonance imaging (MRI) along with a specialized molecular MRI contrast agent.

[ more ]

Feb 1, 2014

Sugar-powered biobattery has 10 times the energy storage of lithium: Your smartphone might soon run on enzymes

Researchers at Virginia Tech have successfully created a sugar-powered fuel cell that has an energy storage density of 596 amp-hours per kilo — or “one order of magnitude” higher than lithium-ion batteries. This fuel cell is refillable with a solution of maltodextrin, and its only by products are electricity and water. The chief researcher, Dr. Zhang, says the tech could be commercialized in as soon as three years.

[ more ]

Jan 24, 2014

The brain can process images seen for just 13 milliseconds

Neuroscientists have found that the human brain can process entire images that the eye sees for as little as 13 milliseconds — the first evidence of such rapid processing speed.

That speed is far faster than the 100 milliseconds suggested by previous studies. In the new study, which appears in the journal Attention, Perception, and Psychophysics, researchers asked subjects to look for a particular type of image, such as “picnic” or “smiling couple,” as they viewed a series of six or 12 images, each presented for between 13 and 80 milliseconds.

[ Paper ] [ More ]

Dec 25, 2013

Neural prosthesis restores normal behavior after brain injury

A new study published in PNAS this month reported used of Brain Machine Interface to successfully restore behavior, in this case, the ability to reach through a narrow opening and grasp food, in a brain-injured rat. Ultimately, the team hopes to develop a device that rapidly and substantially improves function after brain injury in humans.

[ more ] [ paper ]

3D printer creates realistic neurosurgical models for training

A new multi-material 3D printer was used to create realistic, low-cost model of the skull for use by students in practicing neurosurgical techniques. The model uses a variety of materials that simulate the various consistencies and densities of human tissues encountered during neurosurgery.

Neurosurgery is a difficult discipline to master. Trainees may spend as many as 10 years after graduation from medical school developing and honing their surgical skills before they can be designated as proficient in their specialty. The greater the number and variety of neurosurgical training sessions, the better the training experience.

However, the researchers say, it’s difficult to find suitable simulation models that offer accuracy and realism for neurosurgical training while keeping training costs down.

Three-dimensional printers have been used to create models of normal and pathological human tissues and organs for physician training and patient instruction for some time.  Until recently, however, only one material could be used in the creation of models, which is of little value for hands-on training.

[ more ]

Dec 6, 2013

Mind-controlled robots in manufacturing, medicine

University at Buffalo researchers are developing brain-computer interface (BCI) devices to mentally control robots. “The technology has practical applications that we’re only beginning to explore,” said Thenkurussi “Kesh” Kesavadas, PhD, UB professor of mechanical and aerospace engineering and director of UB’s Virtual Reality Laboratory. “For example, it could help paraplegic patients to control assistive devices, or it could help factory workers perform advanced manufacturing tasks.”

[ more ]