Our data indicate that spontaneous improvisation, independent of the degree of musical complexity, is characterized by widespread deactivation of lateral portions of the prefrontal cortex together with focal activation
of medial prefrontal cortex.
These conjunctions reveal broad deactivation of dorsolateral prefrontal cortex for both paradigms (n = 6) as well as focal activation
of the medial prefrontal cortex in Jazz (n = 5) and Scale (n = 4) paradigms.
Hyperconnectivity and slow synapses during early development
of medial prefrontal cortex in a mouse model for mental retardation and autism.
Recruitment
of medial prefrontal cortex neurons during alcohol withdrawal predicts cognitive impairment and excessive alcohol drinking.
The researchers discovered that the ability to stop depended on the activity
of the medial prefrontal cortex (mPFC), a region of the brain implicated in executive control over behavior.
The areas in the brain linked to this type of decision making were the dorsal portion
of the medial prefrontal cortex, which is known to support higher cognitive functions such as planning, and the premotor cortex, which is more involved in the execution of real or imaginary movements.
Not exact matches
The
medial ventral
prefrontal cortex is the seat
of humor.
Suppose I could, say by ablating the ventral
medial prefrontal cortex, very specifically wipe out someone's ability to feel spiritual or feel anything about the presence or existence
of the supernatural (like C.S. Lewis» the Nouminous).
Further research revealed distinct activation differences in the
medial prefrontal cortex (PFC)
of participants in a survey who were asked to make inferences about people similar or dissimilar politically.
Running the game while recording people's brain activity with a functional MRI machine revealed that people who made similar giving choices (either to give half or what they had, or half
of what their partner thought they had) showed similar brain patterns in the
medial prefrontal cortex, a region associated with decision - making.
We propose that the NR determines the specificity and generalization
of memory attributes for a particular context by processing information from the
medial prefrontal cortex en route to the hippocampus.
The
medial prefrontal cortex (mPFC) mediates the cognitive control
of many high - level brain functions.
«The
medial prefrontal cortex has many sub-regions,» said TSRI Senior Research Associate Bindu L. Raveendra, co-first author
of the study with Valerio Rizzo, Khalid Touzani and Supriya Swarnkar, all
of TSRI at the time
of the study.
However, when they closely examined the effects on the brain
of conditioning rodents with a mild foot shock, the scientists found several messenger RNAs recruited to polyribosomes in the
medial prefrontal cortex — a clear indication
of new protein synthesis there.
«The most striking observation from the new study is that the
medial prefrontal cortex is the site
of this early protein synthesis.
Another MRI reading measured the baseline level
of activity in the amygdala and in the brain's
medial prefrontal cortex, an area considered a nexus for decision - making.
Levy's research found a connection between risk preferences and the quantity
of neurons in a different part
of the brain (called the posterior parietal
cortex), but not the amygdala or
medial prefrontal cortex.
The brain scans also showed that the A allele was associated with increased activity in the lateral and
medial prefrontal cortex, regions that belong to a network involved in the encoding
of emotional memories.
Conscious recollection depends on the hippocampus and
prefrontal cortex, whereas familiarity depends on regions
of the
medial temporal
cortex.
The crucial connections dictating a mouse's place in the social hierarchy appear to sit in the part
of the brain called the
medial prefrontal cortex (mPFC), responsible for emotion and decision - making.
Those who had no symptoms
of depression had either strong family support or heightened activity in two key regions
of the brain's reward system: the nucleus accumbens and the
medial prefrontal cortex.
One potential clue came when lead study author Miho Nakajima
of The Rockefeller University discovered a population
of neurons in the
medial prefrontal cortex that express the oxytocin receptor.
The
medial prefrontal cortex is active when people think
of others and how they fit in with them.
«We did not find group differences in their use
of the nucleus accumbens or
medial prefrontal cortex,» Tashjian said.
When anorexic and bulimic women see images
of overweight women, an area
of the brain, the
medial prefrontal cortex, lights up in a functional MRI.
When a group
of men looked at images
of overweight men, there was no
medial prefrontal cortex activity.
And their
medial prefrontal cortex lit up, particularly at images
of overweight women.
More specifically, his work has shown that dopamine signalling in two connected brain regions involved in opiate - related memory processing, called the Basolateral Amygdala (BLA), a region deep within the brain, and the
medial prefrontal cortex (mPFC), located near the surface
of the brain, is switched by opiate exposure.
These differences were also associated with a reduction
of grey matter in a part
of the brain called the
medial prefrontal cortex.
An article, «Smaller amygdala and
medial prefrontal cortex predict escalating stimulant use,» published online on May 13 in Brain: A Journal
of Neurology has found that individual differences in brain structure could help to determine the risk for future drug addiction.
Previous research has already identified components
of the brain's social network, revealing the inferior parietal lobule seems to encode familiarity and social distance, and that the
medial prefrontal cortex encodes how socially relevant other people are to us.
In a 2010 study, psychiatrist Yvette Sheline and colleagues at Washington University School
of Medicine in St. Louis, Missouri, found that these overactive networks converged on a common point in a region called the dorsal
medial prefrontal cortex.
In normal participants, the amygdala seemed to be talking to the
medial prefrontal cortex, an outer layer
of the brain that, Walker says, helps to contextualize experiences and emotions.
Results showed that participants who share more about themselves on Facebook had greater connectivity
of both the
medial prefrontal cortex and precuneus, to the dorsolateral
prefrontal cortex.
Although both types
of memory were laid down in the
medial prefrontal cortex, they were stored along separate paths or axonal projections, which in turn linked to different brain regions (Cell, DOI: 10.1016 / j.cell.2016.05.010).
These neurons, located in a region
of the brain known as the
medial prefrontal cortex (green, left image), become hyperactive in depressed mice (right panel is close - up
of left, yellow indicates activation).
She says another brain region (the
medial prefrontal cortex) involved in sizing up others went wild when players were shown photos
of competitors who outperformed them.
The more social sins (pride, envy, lust, wrath) recruit the
medial prefrontal cortex (mPFC), brain terrain just behind the forehead, which helps shape the awareness
of self.
«It's possible within the population that we see
of healthy young adults, a more pruned structural connection between the amygdala and the
medial prefrontal cortex is indicative
of a more developed connection and one that might be more effective or efficient, and thus lead to greater communication between the two areas.»
Most prominent effects between IQ and the level
of global connectivity efficiency (as expressed by a shorter node specific normalized path length) were found in the
medial prefrontal cortex (yellow box), bilateral inferior parietal
cortex (red box depicts effect in right hemisphere), and precuneus / posterior cingulate regions (orange box)
of the functional brain network.
In the new study, Ron and first author Emmanuel Darcq, PhD, a former postdoctoral fellow now at McGill University in Canada, found that when mice consumed excessive amounts
of alcohol for a prolonged period, there was a marked decrease in the amount
of BDNF in the
medial prefrontal cortex (mPFC), a brain region important for decision making.
The hubs
of connectivity that Dresler mentioned are diffused and widespread, though one noticeable path extended to the
medial prefrontal cortex, which is known to be active when individuals relate new knowledge to pre-existing knowledge.
The first
of these two research programs involves the independent mnemonic contributions
of the different
medial temporal lobes structures, the extent to which different
medial temporal lobe structures must interact in storing information and their interaction with the
prefrontal cortex.
Illness progression, recent stress and morphometry
of hippocampal subfields and
medial prefrontal cortex in major depression.
These 2 modalities were used to investigate connectivity within the default mode network, a set
of brain regions — including
medial prefrontal cortex (MPFC),
medial temporal lobes (MTLs), and posterior cingulate
cortex (PCC) / retropslenial
cortex (RSC)-- implicated in episodic memory processing.
Several groups have reported that a particular set
of brain regions, including the posterior cingulate
cortex and the
medial prefrontal cortex, among others, is consistently deactivated.
By employing two paradigms that differed widely in musical complexity, we found that improvisation (compared to production
of over-learned musical sequences) was consistently characterized by a dissociated pattern
of activity in the
prefrontal cortex: extensive deactivation
of dorsolateral
prefrontal and lateral orbital regions with focal activation
of the
medial prefrontal (frontal polar)
cortex.
Upon engraftment into the
medial prefrontal cortex in rats, the homolog
of the human anterior cingulate
cortex, the cells assumed neuronal morphologies, expressed monoaminergic - specific proteins, and seemed to functionally integrate, as assessed by the upregulation
of the immediate - early gene, cfos.
The amygdalocentric model
of PTSD proposes that it is associated with hyperarousal
of the amygdala and insufficient top - down control by the
medial prefrontal cortex and the hippocampus.
Reversibility
of apical dendritic retraction in the rat
medial prefrontal cortex following repeated stress