Sentences with phrase «of neural activity with»

During training sessions for BrainGate, the computer software learns to associate patterns of neural activity with the intent to move a hand in a particular direction; it can use those intentions to pilot a computer cursor or, if all goes as planned, a motorized wheelchair.

Not exact matches

In a series of experiments, researchers at Northwestern University used brain scanners and EEG sensors to study neural activity in a number of participants tasked with solving complex word puzzles.

If conscious occasions are to play a role in the activities of the body, they must interact with neural occasions.

Also there is evidence of molecular mechanisms in the cell membranes that can amplify small changes in the field to produce large changes in neural activity.13 On the other hand, earlier tests of Kohler's theory found that interference with electrical gradients over the cortex had no effect on behavioral measures (see note 11 for reference to these studies).

The researchers measured the neural activity of the mums and dads whilst they were being shown videos of themselves interacting with their children.

That's the conclusion of a new study that logged the neural activity of 12 high school students and their teacher with electroencephalography (EEG) headsets over 11 classes.

Recordings of neural activity in the frontal cortex of the rats showed that, like humans with schizophrenia, these rats also lacked the low frequency burst of brain activity (delta wave) during the timing task.

Working with the Wilson - Cowan model, a widely - used model in computational neuroscience that describes the average activity of populations of interconnected neurons, Alonso has designed a new mathematical tool to help other neuroscientists explore the broad spectrum of responses possible from a simple neural circuit.

Focusing on the neural pathway from the brain's prefrontal cortex to the amygdala, they combined optogenetics — a technique that uses light to control the activity of neurons in living tissue — with behavioral testing, a methodology that allows researchers to study functional connections between different regions of the brain.

A team led by Aaron Schurger of Princeton University reasoned that repeatedly presenting the brain with the same sensory input should evoke similar neural activity each time — if the input is processed consciously.

The exact location of neural activity is far more difficult to discern via EEG than with many other, more invasive methods because the skull, scalp, and cerebral fluid surrounding the brain scatter its electric signals before they reach the electrodes.

Using an electroencephalogram (EEG) to detect electrical activity in the brain, Emmanuelle Tognoli, Ph.D., co-principal investigator, associate research professor in FAU's Center for Complex Systems and Brain Sciences in the Charles E. Schmidt College of Science, and an expert in electrophysiology and neural, behavioral, and cognitive sciences, will examine how the tactile information from the robotic sensors is passed onto the brain to distinguish scenarios with successful or unsuccessful functional restoration of the sense of touch.

A technology that uses magnetism to regulate neural activity shows a small benefit in patients with mild forms of the disease

With neural prosthetic technology — microchips that can «listen» to many neurons at the same time — researchers are able to find correlations between the activity of many nerve cells.

«When faced with a new task, we're finding that the brain is constrained to take the neural activity patterns that it's capable of generating right now and use them as effectively as possible in this new task.»

He was paralyzed, but the moment he thought about using his hand, we saw changes in neural activity in the specific part of the motor cortex associated with hand movement.

In a bid to determine the regions of the brain concerned with these memorization difficulties, the researchers conducted magneto - encephalographs (a technique that allows very weak magnetic fields produced by neural activity to be measured at the surface of the head) on a group of amusics while they were performing a musical task.

The researchers also found that activation of ESP1 - responding neurons in the region of the brain called the hypothalamus enhanced sexual behavior in female mice, even in the absence of actual ESP1, by using various tools to chemically or optically control neural activities, combined with a process called the TRAP method, which allows them to selectively manipulate neurons responding to a particular stimulus.

Several lines of evidence suggest that autism interferes with the neurotransmitter GABA, which typically puts a damper on neural activity.

«The finding is exciting,» says Bottjer, «because it provides a rare example of changes in neural activity that correspond with behavioral attempts to achieve a mental goal; in this case, to produce vocalizations that mimic the memory of a sound.

Researchers took a three - dimensional approach to this study by looking at what the users» task performance was through evaluating how they process the tasks of detecting cyberattacks with neural activity, which was captured using electroencephalogram, or EEG, cognitive metrics and with eye gaze patterns, which were captured using an eye - tracker.

They tracked the resulting neural activity using functional magnetic resonance imaging (fMRI) and, with the help of a machine learning algorithm, showed they could classify the brain activity associated with each item.

Several of the brain areas that had lost gray matter during pregnancy responded with the strongest neural activity to their own babies as opposed to the photos of other infants.

As the neural activity associated with attention travels down throughout our visual system's circuits, it can also affect how we perceive and interpret the shapes of objects.

The volunteers» subjective feelings closely tracked with their brain activity, implying a common neural experience of anxiety and dread, Naci says.

The analysis suggested that a protein produced by a gene called Olig2, which is only expressed in the neural progenitors that create motor neurons, promotes motor neuron formation by interfering with the activity of several members of another gene family — the Hes genes.

The researchers were able to zero in on the Broca's area as well as related brain circuitry specifically linked to speech, using regional cerebral blood flow as a measure of brain activity, since blood flow is typically coupled with neural activity.

This article was originally published with the title «Scientists Create a Map of Smell Similarity Based on Neural Activity»

The Raman images now show protein activity at neural cell level, but the sensitivity is high enough for detecting areas that are even smaller — as is the case with the brain sample of the healthy person.

The synapses in the network start out with a random distribution of weights, and the weights are gradually tweaked according to a remarkably simple procedure: The neural firing pattern generated while the machine is being fed data (such as images or sounds) is compared with random firing activity that occurs while the input is turned off.

They speculate that the correlation could have something to do with the patterns of neural activity surrounding the amygdala, the seat of fear in the brain.

This new sequence of activity coexisted with the electrical pattern that was spontaneously generated when the neural culture was initially linked.

It is also the first to demonstrate that a deep convolutional neural network — a computing system modelled after the neuron activity in animal brains that can basically learn on its own — can effectively differentiate between similar plants with an amazing accuracy of nearly 100 %.

Scientists seeking to understand the neural mechanisms underlying social cognition and emotion have drawn on a variety of methods, including studies of patients with neurological damage and single - cell recording of brain activity in nonhuman animals.

These products are crude, imprecise and sometimes frustratingly nonresponsive — that's how it goes with EEG - based headsets, which pick up only the faintest electroencephalographic echoes of neural activity through the skull.

Studies of meditation carried out with other techniques, such as magnetic resonance imaging and electroencephalography, have revealed different patterns of neural activity — not surprisingly, since meditation is a complex behavior that evokes many different psychological states.

When the electrodes were activated, though, the neural activity of both brain regions in the people with OCD became virtually identical to that in the controls.

We recorded neural population activity with arrays of microelectrodes implanted in the PPC of a tetraplegic subject.

They found that children of mothers with a lower education had noisier, weaker and more variable neural activity in response to sound and greater activity in the absence of sound.

To work out why stimulation has this effect, Damiaan Denys and Martijn Figee at the Academic Medical Center in Amsterdam, the Netherlands, and colleagues recorded neural activity in people with electrodes implanted into a part of the brain called the nucleus accumbens.

In order to determine what factors are associated with firing rate changes, we generated a prediction of neural activity by convolving observed neural activity aligned with one saccade direction with the intersaccade distribution times aligned with the other saccade direction.

But neural activity in regions associated with the self and with social considerations serves as a type of common denominator for various types of social and self - related thinking.

The demonstration in this paper, that the secondary fMRI response (the post-stimulus undershoot) is not simply a passive blood flow response, but is directly related to synchronous neural activity, as measured with EEG, heralds an exciting new chapter in our understanding of the workings of the human mind.»

Next, working with anesthetized rats, they sent direct ionic current into the sciatic nerve in the legs and, using neural recording electrodes, recorded whether this current inhibited the activity of individual or groups of neurons at the spinal cord.

In the aging research, there are mixed findings on whether aging is associated with increased or decreased amplitude of neural activity, and looking into variability of the signal gives us a new type of information on how the aging brain works.»

Failure to block the activity of p53 leads to neural tube defects, such as spina bifida, and some defects of the major blood vessels associated with the heart.

We can also couple that with microfluidics to administer neuromodulators, hormones and other molecules and see how site - selective administration of the chemicals modifies neural activity.

(A, B) Comparison of neural activity blood oxygen - level dependent (BOLD) in 13 subjects with autism and 13 unaffected controls, when they were watching a scientific TV program (vs. rest).

Figure S2 (A) Neural activity (fMRI only, top panels) in subjects with autism (right) and controls (left) during audio - visual presentation of the documentary (p < 0.05, corrected).

Neural implants: Richard Andersen, the James G. Boswell Professor of Neuroscience, T&C Chen Brain - Machine Interface Center Leadership Chair; and director of the T&C Brain - Machine Interface Center, will work with Ueli Rutishauser (PhD» 08), associate professor of neurosurgery, neurology and biomedical sciences at Cedars - Sinai Medical Center, to observe brain activity of patients with neural prosthetics during social situaNeural implants: Richard Andersen, the James G. Boswell Professor of Neuroscience, T&C Chen Brain - Machine Interface Center Leadership Chair; and director of the T&C Brain - Machine Interface Center, will work with Ueli Rutishauser (PhD» 08), associate professor of neurosurgery, neurology and biomedical sciences at Cedars - Sinai Medical Center, to observe brain activity of patients with neural prosthetics during social situaneural prosthetics during social situations.