A revolutionary technique that switches
brain circuits on and off has taken neuroscience by storm and is now undergoing a new round of innovation
The Obama administration's neuroscience initiative highlights new technologies to better understand the workings of
brain circuits on both a small and large scale.
Not exact matches
This can be blamed
on the male
brain's temporal - parietal junction, which activates what Goman calls men's «analyze - and - fix - it
circuits.»
The Secret Life of the Grown - Up
Brain: The Surprising Talents of the Middle - Aged Mind (Viking) is a roundup of the most recent science on how the human brain ages, as well as a guide to «toning up your brain circuits» to better weather the onset of age — which is itself a relatively new problem for humankind, writes author Barbara Strauch, The New York Times «s deputy science and health and medical science editor, whose earlier book, The Primal Teen, considered the teenage b
Brain: The Surprising Talents of the Middle - Aged Mind (Viking) is a roundup of the most recent science
on how the human
brain ages, as well as a guide to «toning up your brain circuits» to better weather the onset of age — which is itself a relatively new problem for humankind, writes author Barbara Strauch, The New York Times «s deputy science and health and medical science editor, whose earlier book, The Primal Teen, considered the teenage b
brain ages, as well as a guide to «toning up your
brain circuits» to better weather the onset of age — which is itself a relatively new problem for humankind, writes author Barbara Strauch, The New York Times «s deputy science and health and medical science editor, whose earlier book, The Primal Teen, considered the teenage b
brain circuits» to better weather the onset of age — which is itself a relatively new problem for humankind, writes author Barbara Strauch, The New York Times «s deputy science and health and medical science editor, whose earlier book, The Primal Teen, considered the teenage
brainbrain.
Then go pick up a book
on neuroscience and realize that your
brain is far from perfect and many different «Dying» neurological
circuits could cause the same thing....
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.
Emory medical school neurologist and depression researcher Helen Mayberg explains that her work
on depression strives to describe the same overarching concepts that Freud invoked, including links between
brain circuits and disordered moods.
«While previous studies at McLean and elsewhere have focused
on the behavioral symptoms produced by such immune activation, this study goes deeper, going to the cellular level to show how the
brain's neural
circuits are affected.»
However, all the lesions were part of the same functional network, located
on different parts of a single
circuit that normally allows neurons throughout the
brain to cooperate with each other
on specific cognitive tasks.
If PirB partnered with MHCI in neural
circuits, Shatz thought, the absence of either molecule should have similar effects
on the
brain.
Clearly, there are neural
circuits in the visual pathways of the chick's
brain that are specialized to detect the red spot
on a beak as soon as the chick hatches.
Most recently, a technology called optogenetics has allowed experimenters to toggle entire
brain circuits «
on» or «off» by shining laser light
on genetically modified synapses.
The two sides of the
brain were exposed to the same mix of hormones during development, yet the song
circuit was much larger
on the male side of the creature's
brain than
on the female side.
Whatever is the goal, I work
on that and I think about what types of
brain circuits are going to be involved and how to most effectively engage them.
He plans to continue using optogenetics to pin down
circuits of
brain cells responsible for disease and to combine that knowledge with the colorful
circuit images to home in
on which wires need to go where to establish normal communication.
Researchers from Hokkaido University and their colleagues found that male cockroaches can «see» fine structures of odor plumes, thanks to their finely tuned odor sensors
on their antennae and neural
circuits that convey spatial information to the
brain.
Among their goals for this system are: a higher density electrode array to allow for more precise targeting
on neurons, new recording
circuits that vastly increase the volume of data captured, and a new wireless power and telemetry technology that allows for real - time data transmission from the
brain.
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.
But when Tye switched
on the light and activated the
circuit in her subject's
brain, the mouse ventured out, exploring the open part of the maze with no visible anxiety.
We were surprised how quickly we saw differences in the ability of mice from each group to learn how to run
on complex wheel, which shows just how fast the
brain can respond to wrap newly - activated
circuits in myelin and how this improves learning.
If scientists can study accurate models of working neural
circuits in these
brain bits, he and others say, researchers might finally get a handle
on uniquely human neurological conditions.
Solutions could include liquid coolants or
circuits arrayed
on 3 - D grids like the
brain
Pass it
on: Depressed patients may have problems with the function of a
brain circuit thought to be involved in feelings of hate.
Having worked
on emotions for many years — pain, stress, anxiety, depression — in the midst of a strong emotion, I can think about specific
brain circuits being activated.
In addition, the two genes are turned
on in areas that are part of the cortico - striatal - thalamo - cortical
circuit, a loop of
brain cells connecting the cortex to specific regions involved in processing emotions and movement.
Understanding how common
brain circuits for decision - making contribute to seemingly unrelated disorders will allow researchers to focus
on core disturbances and leverage treatment advances across different disorders.»
Serge Luquet's team at the «Biologie Fonctionnelle et Adaptative» laboratory (CNRS / Université Paris Diderot) has demonstrated part of the answer: triglycerides, fatty substances from food, may act in our
brains directly
on the reward
circuit, the same
circuit that is involved in drug addiction.
A higher proportion of people may have vivid death experiences, but do not recall them due to the effects of
brain injury or sedative drugs
on memory
circuits.
Data sharing has become increasingly urgent in neuroscience, with its diversity of research tools and the vast amounts of information they generate, both
on the whole
brain and
on the connecting neural
circuits between
brain regions.
Others do the opposite, turning
on brain circuits that suppress appetite.
According to Halassa, the new research sets the stage for ever more detailed studies
on the complex behavior involved in how the mammalian
brain pays attention to what's important, and especially how those neural
circuits are broken in cases of attention - deficit diseases, such as ADHD, autism, and schizophrenia.
Based
on their data, Card and von Reyn propose that a looming stimulus first activates a
circuit in the
brain that initiates a slow escape, beginning with a controlled lift of the wings.
Most previous research
on social behavior has focused
on the
brain's
circuits for hardwired behaviors, like aggression, sex, or mothering.
There is no way to create a «schizophrenic» mouse, Meyer emphasizes, but certain key cognitive deficits and behaviors can be measured in both animals and humans and are thought to rely
on similar
brain regions and neural
circuits.
But a new study suggests that caring for children awakens a parenting network in the
brain — even turning
on some of the same
circuits in men as it does in women.
When the subjects truly saw the color rectangles, the fusiform
circuit lit up
on both sides of their
brain; when they had to imagine the color, the
circuit only lit up in the right hemisphere.
The gene - by - hormone interaction's effect
on circuit function was found only with one of two versions of the gene that codes for BDNF (
brain - derived neurotrophic factor), a chemical messenger operating in the
circuit.
With
brain imaging, the effects of regular TV viewing
on a child's neural
circuits are plain to see.
To find out, Spiegel and Kosslyn decided to collaborate
on a study, focusing
on a part of the
brain that is well understood: the fusiform
circuit.
Researchers at MIT's Computer Science and Artificial Intelligence Laboratory have developed a new computational model of a neural
circuit in the
brain, which could shed light
on the biological role of inhibitory neurons — neurons that keep other neurons from firing.
To find out, Spiegel and Kosslyn collaborated
on a study that focused
on a part of the
brain that is well understood: the fusiform
circuit.
Greene could then peel away the
brain's general decision - making
circuits and focus in
on the neural patterns that differentiate personal from impersonal thought.
«This field can penetrate the
brain regardless of tissue density — like MRI — and can turn
on specific
circuits at a specific time, whenever the test subject is within the magnetic field.»
Previous studies have shown that a special type of cortical interneurons, called basket cells, exerts a strongly inhibitory effect
on brain circuits.
Developing memristive
circuits that simulate the architecture of the
brain on a chip might enhance our understanding of our own circuitry, or even help to develop next - generation artificial intelligence.
«The
circuits in our
brain that allow us to focus
on a particular task, especially a task that leads to reward, are well known,» said Michael Platt, the James S. Riepe University Professor in Penn's psychology, neuroscience and marketing departments.
«We now have the tools to embark
on reverse engineering the
brain by discovering relationships between
circuit wiring and neuronal and network computations.»
Buzsáki's team found conventional protocols lack sufficient current to directly influence
brain circuits, but their study focused
on what happened immediately following stimulating pulses.
A study published
on February 2 in Nature Communications ups the ante, reporting that conventional TES techniques do not deliver enough current to activate
brain circuits or modulate
brain rhythms.
Most of his work focuses
on the pharmacologic manipulation of mammalian
brain circuits which use the most abundant inhibitory neurotransmitter in the central nervous system gamma - aminobutyric acid (GABA) as their chief signaling molecule.