«There are too many folks out there right now who are
using electrical brain stimulation in a cavalier way,» says Michael Weisend, at Rio Grande Neurosciences in Santa Fe, New Mexico.
Not exact matches
The work is still in it's early stages — «Any effort to
use electric current for stimulating the
brain outside the laboratory or clinic could be dangerous and should be strongly discouraged,» Green cautions — but there are already places where the idea of
electrical stimulation is being tested out in the real world.
It still might sound a little sci - fi, but scientists and entrepreneurs are already experimenting with wearable devices that
use electrical stimulation to make your
brain work better in a host of intriguing ways.
These include Transcranial Magnetic
Stimulation and Transcranial Direct Current
Stimulation, the former
uses alternating magnetic fields to simulate specific
brain areas while the latter aims
electrical currents of power equal to a 9 - volt battery to specific
brain areas.
A noninvasive technique for
brain stimulation, tDCS is applied
using two small electrodes placed on the scalp, delivering short bursts of extremely low - intensity
electrical currents.
Called repetitive transcranial magnetic
stimulation (rTMS), the noninvasive technique
uses electromagnets to create localized
electrical currents in the
brain.
The device
uses electrical stimulation to block the pain signals from reaching the
brain.
Lieber and colleagues also demonstrated that the syringe - injectable mesh electronics could be
used to deliver
electrical stimulation to the
brain over three months or more.
Researchers have developed a method to measure how the
brain responds to
electrical stimulation and
use the response to maximize efficacy of deep
brain stimulation (DBS)-- a therapy that has been successfully
used to treat advanced stages of Parkinson's disease.
This ongoing study, the PACt - MD study, combines
brain training exercises and
brain stimulation,
using a mild
electrical current to stimulate
brain cells and improve learning and memory.
Another technique dubbed magnetoencephalography (MEG) maps magnetic fields in the
brain produced by
electrical signals; a similar approach, transcranial magnetic
stimulation (TMS), selectively stimulates parts of the
brain and is already being
used to treat severe depression, migraine headaches and other conditions.
Despite the tradeoffs, one thing is certain: human research is key to our understanding of how people perceive
electrical stimulation of the
brain, and how we may
use it to restore tactile sensation to users and help them drink that morning cup of coffee on their own.
By
using electrical stimulation, the scientists show that the blood pressure increase comes from the muscle itself, since the
brain is not telling the leg to contract and the pressure still increases.
In fact, some emerging therapies for depression
use electrical stimulation of the vagus nerve to trigger changes in the
brain.»
In a study of 57 people at Beth Israel Deaconess Hospital in Boston, Cerruti manipulated activity in the nonverbal part of the
brain by
using direct
electrical stimulation and then tested participants» verbal activity.
ELECTROCONVULSIVE THERAPY Also known as ECT, this highly controversial technique
uses low voltage
electrical stimulation of the
brain to treat some forms of major depression, acute mania, and some forms of schizophrenia.
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