Now researchers report that
damage to a brain region called the orbital prefrontal cortex (OPFC) brings out impulsive behavior in rats as well, causing impulsive behavior.
For example, sufferers of Kluver - Bucy syndrome — who often gorge themselves or resort to eating nonfood items — have
damage to brain regions including the amygdala and the OFC.
Not exact matches
«The
regions in these networks are not talking
to each other as much as healthy adults of the same age, even in networks where
brain damage didn't occur.
In fact, the authors report in Science this week that
damage to that
region is 136 times more likely
to result in a «disruption of smoking addiction» — defined as the ability
to quit easily without relapse — than injury
to other parts of the
brain.
The sheer volume of blood moving through makes this
region susceptible
to aneurysms, weaknesses in arterial walls that can lead
to stroke and debilitating
brain damage.
Currently, fcMRI is not used clinically, and the kinds of MRI and CT scans used
to assess stroke
damage don't measure how well different
brain regions work together.
Check out the
brain of a chronic alcoholic and you'll often find a particular
region badly disintegrated; autopsy someone who was exposed
to lots of organic toxins and you'll see
damage in another
brain area.
Implanted electrodes might also be dangerous if they penetrate sensitive
regions of the
brain like the speech centers, where
damage could lead
to speech loss, or the motor cortex, where paralysis is a risk.
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.
In addition
to revealing the functions of different areas within the prefrontal cortex, studies have also demonstrated the flexibility of the
region, which has helped experts optimize cognitive therapy techniques
to enable patients with
brain damage to learn new skills and compensate for their impairments.
The findings have helped experts rehabilitate patients experiencing
damage to this
region of the
brain.
Because women are less specialized, their
brains seem
to be more resilient — they recover faster and more easily from the effects of strokes — and better at compensating if one
region is
damaged.
«We have seen that two gambling distortions — the «gambler's fallacy» and the «near - miss» effect — that are evident in the general population, and which appear
to be increased in problem gamblers, are actually abolished in patients with
damage to the insula
region of the
brain,» he said.
All of the study subjects had
damage to the prefrontal cortex, a
brain region behind the forehead that is important
to cognitive tasks such as planning, problem - solving, self - restraint and complex thought.
It is made in abundance in the
brain, especially in
regions where
damage to dopamine - producing neurons is known
to give rise
to Parkinson's.
As Meeks and Jeste continue developing their model of wisdom in the
brain, they plan
to study the distribution of wisdom in the general population and examine
brain -
damaged individuals
to confirm the
regions involved.
They saw that people with egocentric neglect all tended
to have
damage in a cluster of
regions along one side of the
brain (including part of the parietal lobe).
Alien hand seems
to be caused by
damage to a small area at the front of the
brain, suggesting that this
region has a role in motor control.
Experiments like Lovejoy's on the superior colliculus, together with studies of parietal lobe
brain damage, show us that both of these
regions contribute
to our awareness of space.
In the mid-1800s, the French physician Paul Broca discovered a
region on the left side of the
brain that is essential for language;
damage to Broca's area, as it is called, leaves people unable
to talk.
Subramaniam and his colleagues also found lesions and
damaged neurons in the cerebellum, confirming Rhes is sufficient
to promote toxicity and showing that even those
regions of the
brain normally impervious
to damage can become vulnerable if Rhes is overexpressed.
We know that the hippocampus is one of the first
regions of the
brain to suffer
damage in neurodegenerative disease, resulting in memory loss and disorientation.
Our goal is
to use a new imaging system
to monitor
damage caused by AD
to the
brain region that contains the insulated axons (analogous
to cables) connecting the neuron cell bodies (analogous
to the central processing unit of a computer).
With the loss of the cushioning effect provided by free - moving collagen in the blood vessels, the force of the surge of blood that is driven into the arteries by the pumping action of the heart is carried directly
to organs like the kidneys and the
brain,
damaging to the structures that filter our blood and that connect the functional
regions of our
brain, and putting us at risk of a stroke.
Learning - related changes in signaling strength between synapses in the hippocampus, a
region crucial
to memory and one of the first parts of the
brain to suffer
damage with the onset of Alzheimer's Disease.
«By studying how
damage to particular
brain regions produces specific forms of cognitive impairment, we can map the architecture of the mind, identifying
brain structures that are critically important for specific intellectual abilities.»
By analyzing multiple patients with
damage to a particular voxel or cluster of voxels and comparing their cognitive abilities with those of patients in whom the same structures were intact, the researchers were able
to identify
brain regions essential
to specific cognitive functions, and those structures that contribute significantly
to intelligence.
«Although, we now know that alcoholism and poor diet that leads
to thiamine deficiency (vitamin B1) can also
damage central
brain regions important for both smell and memory.»
After cutting back on alcohol, Pagano says,
damaged regions of the
brain can start
to «light up» again on
brain scans.
The
brain and neurological tissue are extremely sensitive
regions of the body that are highly susceptible
to damage.
Mike handles high value claims for cerebral palsy and other complex
brain injury cases where
damages are likely
to be in the
region of up
to # 10 million.
A person's sense of smell is typically related
to damage to the nasal passages, a shearing injury
to the olfactory nerve or an injury
to the front temporal
regions of the
brain.
A medical expert testified that the head injury, including
damage to the right frontal lobe and left parieto - occipital
region of the
brain was caused by the ornament falling on his head.
The paralysis is sometimes the result of a traumatic
brain injury that
damages the myelin sheath of the nerve cells; locked - in syndrome is caused by
damage to the
brain's vertical pons, a
region that controls voluntary movement.
A confluence of research has identified executive functioning deficits as a common characteristic of individuals with FASD.9 15 — 27
Damage to neurological structures, including the prefrontal
regions of the
brain, is a significant hypothesised cause for these deficits.28 29 Executive functions are defined as a set of cognitive processes responsible for orchestrating purposeful, goal - directed behaviour.15 30 31 These processes are responsible for the ability
to plan, organise, attend, problem solve and inhibit responses.31 It is also suggested that the ability
to self - regulate emotional responses and behavioural actions is interrelated with the construct of executive functioning.17 28 32 Deficits in executive functioning and self - regulation can lead
to learning and behavioural problems that impact a child's educational outcomes as they struggle
to cope with the complex demands of school life.16 20