Researchers have noted pleasure deficiencies shown
on brain scans of a variety of people, finding that frequent abuse of food or drugs actually alters the brain, causing it to not light up with dopamine as it once did.Chronic overeating can also lead to diabetes and predisposes the body toward inflammation, insulin resistance, elevated blood pressure, psychiatric illness, poor digestion, hormone imbalance, and malnutrition.
That's one of the surprising findings of an unusual neuroscience study based
on brain scans of the musician Sting.
Not exact matches
Other studies, meanwhile, are examining tryp's potential efficacy as an antifungal agent; and as a prognostic indicator in patients with
brain cancer (as seen by increased uptake
of the amino acid
on a PET
scan).
This is a possibility (albeit a medieval way
of describing it) within the realm
of psychology so it wouldn't necessary show up
on a
brain scan.
A day later, I had an MRI
scan of my
brain, and two days after that I was informed that I had several lesions
on an optic nerve behind my right eye which required IV steroid treatment.
This book is packed full
of empirical evidence, much
of it shown with
brain scans and papers
on an 18 year study.
«We all know that if you engage in certain kinds
of exercise
on a regular basis you can strengthen certain muscle groups in predictable ways,» Davidson says in his office at the University
of Wisconsin, where his research team has hosted scores
of Buddhist monks and other meditators for
brain scans.
Once the
scan started there was so much to focus
on — from their
brain development to the formation
of their limbs — it didn't really hit me until we were in the parking lot that I was carrying two little boys.
Lastly, at the end
of this film, Christopher Plummer was experimenting with a
brain -
scanning technology
on two subjects and placed them in a room with a wired device
on their heads.
They were amazed to find a large difference in the
brain scans of these 2 - 3 year olds, showing that in the first few years
of life a child's
brain development relies heavily
on nurturing by his parents.
The abnormalities disclosed
on post-season DTI
scans among the players were closer to the
scan of the one player with diagnosed concussion than to the normal
brains in the control group.
They also found that some
of the athletes, none
of whom suffered diagnosed concussions, didn't do as well as predicted
on tests
of learning and memory at the end
of the season, although the study did not find «large - scale, systemic differences» in the
brain scan measures, which the authors found «somewhat reassuring» and consistent with the fact that millions
of athletes play contact sports for many years without developing progressive neurodegenerative disorders.
We headed back to Adelaide at about 32 weeks for another
scan to check the measurements again and to see whether I could birth our baby back home, or whether (because
of the possibility
of fluid
on the
brain) I had to be in the city.
She's looking at remarkable new images
of brain scans of people
on LSD — the first time they've ever been taken anywhere in the world.
These are the first ever
scans of a
brain on LSD.
Despite an explosion
of research
on the use
of brain scans and other tools
of science to help better determine a person's guilt or innocence, experts at a AAAS - organized discussion said hopes that neuroscience might transform the legal system are unrealistic for now.
But experts looking back at the 2007 case now say Hodges was part
of a burgeoning trend: Criminal defense strategies are increasingly relying
on neurological evidence — psychological evaluations, behavioral tests or
brain scans — to potentially mitigate punishment.
A close analysis
of the
brain scans revealed vastly different neural circuitry behind problems that seem similar
on the surface.
Examining the
brain scans in the context
of other disease markers from spinal fluid analyses and neuropsychiatric tests
on the same participants showed that the rise and spread
of tau in the
brain tracked more closely with declining mental function than did amyloid.
Patients showing gadolinium in the vitreous chamber at the later timepoint tended to be
of older age, have a history
of hypertension, and have more bright spots
on their
brain scans, called white matter hyperintensities, that are associated with
brain aging and decreased cognitive function.
Trying to find the right medicine for the sickest
of these patients, Rapoport
scanned their
brains to zero in
on regions involved in OCD and found increased activity in the basal ganglia, a center for movement and habits located at the base
of the forebrain.
First, Vanduffel's team
scanned two monkeys»
brains using functional MRI as they located the position
of a green dot
on a computer screen as fast as possible after being shown a «start» cue.
Merim Bilalic at the University
of Tübingen in Germany used fMRI to
scan the
brains of eight international chess players and eight novices while they identified either geometrical shapes or whether the pieces
on a chess board were in a check situation.
Freeman and his colleagues are comparing
brain scans of PTSD victims from the Gulf War, Vietnam, Korea, and so
on.
The
scans — done with functional Magnetic Resonance Imaging, or fMRI — show which sections
of the five
brains became more active during the ads, thereby revealing what's really going
on in people's heads.
Based
on MRI
scans, the researchers attribute the seizures to damaged inhibitory fibers
on the right side
of the man's central parietal cortex, a
brain region near the crown
of the head.
Emily Cross and her colleagues at the Max Planck Institute for Human Cognitive and
Brain Sciences in Leipzig
scanned the
brains of 18 people with functional MRI while showing them photographs
of a contortionist in ordinary positions — stretching to one side, for example — and in contorted postures such as lying
on her stomach with her toes touching her forehead.
Participants will be selected based
on the results
of a PET
brain scan to detect the presence
of the haywire proteins.
By comparing participants» mental health assessments at the time
of the
brain scans, and in a follow - up occurring
on average seven months later, he found that these at - risk individuals were less likely to develop anxiety if they also had high activity in the dorsolateral prefrontal cortex.
Meanwhile the influence
of neuroscience
on education continues to mushroom, thanks to «opportunistic marketing» and promises that can not be kept and even, in one prominent case, the fraudulent use
of misleading false - color images
of brain scans.
Sook - Lei Liew and her colleagues from the National Institute
of Neurological Disorders and Stroke in Bethesda, Maryland, asked eight adults to watch a circle
on a screen while an fMRI machine
scanned their
brain.
These comprised not only «conventional» behavioral studies, but also the physical effects
on the
brains of test participants by measuring the Blood Oxygen Level - dependent (BOLD) response using functional Magnetic Resonance Imaging (fMRI)
scans.
A federal court in Tennessee heard arguments yesterday and today
on whether lie detection technology based
on fMRI
scans of brain activity should be admitted in a criminal case involving a psychologist accused
of defrauding Medicare.
Images
of the tumor cells are immediately created
on an LCD screen observed as the surgeon
scans the instrument across the tumor or
brain surface.
Stolk argues that scientists and engineers should focus more
on the contextual aspects
of mutual understanding, basing his argument
on experimental evidence from
brain scans that humans achieve nonverbal mutual understanding using unique computational and neural mechanisms.
They have used a clinical MRI scanner
of the type all neuroscience centres have to carry out a special type
of scan called a T2 - weighted imaging process which is able to reveal lesions in the
brain's white matter that are centred
on a vein — a known indicator
of MS.
They'll be just as revolutionary as the use
of DNA evidence,» contends Kiehl, citing his recent study
on impulsivity — «that
brain scans were better than the PCL - R at predicting that psychopath offenders were four times more likely to reoffend.»
The tests and
scans revealed that variation in the genetic code
of genes known as ARVCF and FADS2 influenced the risk
of brain injury
on MRI in the babies.
Using two data sets
of functional MRI
brain scans from more than 350 adult and child siblings during resting state, Fair and colleagues applied an innovative technique to characterize functional connectivity and machine learning to successfully identify siblings based
on their connectotype.
The patterns were surprisingly consistent from person to person, to the extent that the researchers could predict, based
on brain activity, the feelings
of an individual who had never been
scanned before.
Nicholas Schiff, a neurologist at Cornell's Weill Medical College, adds that such
brain -
scan results don't necessarily prove awareness, pointing out that people
on the verge
of sleep or under hypnosis follow orders without necessarily being aware too.
To explain how
brains make these
on - the - fly decisions, Reza Shadmehr
of Johns Hopkins University and John Krakauer
of Columbia University two years ago reviewed studies in which the
brains of healthy people and
of brain - damaged patients who have trouble controlling their movements were
scanned.
We also used predictive modeling to show we could predict, with some degree
of accuracy, how creative people's ideas were (based
on brain scans) that had already been published.»
«
On a normal clinical MRI
scan, you typically see the structural images
of the
brain, and for a mild
brain injury like a concussion, we aren't able to see the underlying changes we were able to see using these advanced methods.»
Based
on the results
of that test, Beaty and colleagues developed a predictive model and tested against
brain scan data collected for earlier studies
on creativity.
On both the acute and the three - month
scans, researchers observed that the very long fiber tracks in the
brains of the concussed players were damaged, and also saw «hyper - connectivity» in some areas
of the
brain, suggesting the
brain may still have been trying to compensate for the injury.
They trace the development
of the face in embryos,
scan brains, read the electrical activity
of muscles, and record grins and pouts
on high - speed video.
In 2006 Grafman's lab ran an experiment
on political beliefs,
scanning the
brains of people as they viewed pictures
of John F. Kennedy, Hillary Clinton, Ronald Reagan, and John McCain.
Tanabe's team used MRI
scans to measure the
brain volumes
of 59 people previously dependent
on stimulants and compared them with people who have never been dependent
on these kinds
of drugs.
The differences, as revealed by MRI
scans, were striking: For example,
brain regions known to be involved in control
of emotions and impulsivity, such as the anterior cingulate cortex, were
on average 8 % smaller in subjects with low levels
of MAO - A.