«Hunting for the brain's opioid addiction switch: Expert investigates how drug addiction
changes circuits in the brain.»
Not exact matches
Science shows that meditation causes measurable
changes in the
brain that short
circuit panic and speed learning.
What's happening, the authors suggest, is that as the gay fathers take on the role of independent, hands - on caregivers, their
brains change as a result — the «mentalising»
circuit connects with and stimulates the «emotional»
circuit more commonly found to be active
in mothers.
«It's a period
in human development
in which
brain circuits change and reorganize and. . .
The
change in what the volunteers saw was so fast, Dilks says, that it must be due to the
brain redirecting signals through pre-existing
circuits rather than forging new connections.
These differences were reflected
in crucial
changes in key
brain circuits.
In other research, Gaab and her colleagues have found an intriguing link between children's reading difficulties and neural deficits that prevent them from properly processing fast -
changing sounds; they also found that computerized sound - training exercises «rewired» those faulty
brain circuits.
In drug addiction — my field — rodents will self - administer and addict themselves to the same drugs that humans self - administer and addict themselves to, which makes it possible to identify the neural circuits in the brain, and the molecular changes within those circuits caused by drug exposure, that underlie states of addictio
In drug addiction — my field — rodents will self - administer and addict themselves to the same drugs that humans self - administer and addict themselves to, which makes it possible to identify the neural
circuits in the brain, and the molecular changes within those circuits caused by drug exposure, that underlie states of addictio
in the
brain, and the molecular
changes within those
circuits caused by drug exposure, that underlie states of addiction.
This pruning
changes the relative density of receptors
in the
circuit linking the area of the
brain involved with processing rewards (the basal ganglia) and the area of the
brain implicated
in inhibition and control (the prefrontal cortex).
This kind of progressive speech impairment is associated with dysfunction
in the cortical - basal ganglia
brain circuit in both humans and songbirds, so Liu could make assumptions based on this trial about how the human
brain circuit changes.
For decades, clinical and pre-clinical research considered that opiate consumption caused permanent
changes in the
brain's reward
circuits, resulting
in a persistent vulnerability to relapse.
For voles, the profound lifestyle
change seems to have occurred when previously separate
circuits in the male
brain — one for processing social recognition, another for reward — became biochemically linked.
The critical role these
changes play
in brain development highlights the importance and urgency
in understanding neural
circuits in more detail and suggests new avenues for investigating the underlying causes of developmental disorders such as autism.
Thus, this study found that women who have recovered from anorexia nervosa show two related patterns of
changes in brain circuit function that may contribute to their capacity to sustain their avoidance of food.
When comparing the scan results for
brain activity before treatment and after a year of stimulation, the researchers found that there were
changes in the regions linked to anorexia, suggesting that deep
brain stimulation was able to directly affect the related
brain circuits.
The researchers think that a junk diet causes lasting
changes in the reward
circuit parts of the rats»
brain, for example, the orbitofrontal cortex, an area of the
brain responsible for decision - making.
The results of their work, the researchers say, may advance scientific understanding of how genes linked to the risk of human bipolar disorder
change neuronal
circuits in the
brain, and may offer an animal model for testing new treatments.
«The cortical folding pattern itself may not be so important, but the disturbances
in connections between
brain regions implicated by the
changes in cortical folding could provide critical clues to deficits
in the integrity of
brain circuits that contribute to symptoms and functional impairment
in schizophrenia,» commented Dr. John Krystal, Editor of Biological Psychiatry.
Long - term use also causes
changes in other
brain chemical systems and
circuits as well, affecting functions that include:
Science has proven that social exchanges
change the neurotransmitter and
circuit activity
in your
brain which decreases stress, anxiety, and depressive symptoms and ups those calm and happy feelings.
Laboratory studies have found that meditation produced
changes in brain circuits involved
in regulating emotion, Dr. Davidson said, and may reduce markers of inflammation and stress hormones like cortisol.
Emerging scientific investigation is improving our understanding of the causal biological pathways for these robust associations.46 Early childhood trauma, including physical abuse, leads to the production of stress hormones, such as cortisol and adrenaline that are normally protective, but with severe or persistent trauma can become toxic.47, 48 These stress hormones regulate neural
circuits that are important
in modulating an individual's response to stress, and over time, are associated with structural and functional
changes in the
brain and other organs.