Sentences with phrase «frequency stimulation»

The experiments involve placing dogs under anesthesia and then using electrodes for high - frequency stimulation at various places on their spinal cords to induce coughing.

Abbreviations: AMPAR, AMPA receptor; AS, Angelman syndrome; BDNF, brain - derived neurotrophic factor; CaMKII, α - calcium / calmodulin - dependent protein kinase II; CGN, cerebellar granule neuron; co-IP, coimmunoprecipitation; DG, dentate gyrus; ERK, extracellular signal - regulated kinase; fEPSP, field excitatory postsynaptic potential; Gab1, Grb2 - associated binder 1; HFS, high frequency stimulation; IGF, insulin - like growth factor; LTP, long - term potentiation; PSD - 95, postsynaptic density protein - 95; SYN, synaptophysin; WT, wild type

LTP, induced with high - frequency stimulation, was reduced in old rTg4510 and APP / PS1 mice.

The study, «Low - frequency stimulation of STN - DBS reduces aspiration and freezing of gait in patients with PD,» was funded by the Michael J. Fox Foundation under the Rapid Response Innovation Award program.

In addition, high frequency stimulation delivered via macroelectrodes has been shown to inhibit nearby neuronal somata, while also providing excitation to axonal projections, indicating that small changes in electrode location could lead to substantially different results (Herrington et al., 2016).

«The small amount of calcium released per stimulus is the key element that permits the calcium pumps in midshipman swimbladder muscle to keep up over long periods of high - frequency stimulation,» Rome explains.

Further experiments suggested the different effects may be due to a unique firing pattern by inhibitory neurons in a neighboring brain region, the zona incerta, during low frequency stimulation.

In contrast, sleep spindles did not occur during high frequency stimulation.

When the scientists used functional magnetic resonance imaging (fMRI) to scan brain activity, they saw that high and low frequency stimulation put the rats in completely different states of activity.

Moreover, when the scientists blocked the firing of the zona incerta neurons during low frequency stimulation of the central thalamus, the average activity of sensory cortex cells increased.

«High frequency stimulation in pain medicine.»

This phenomenon, known as long - term potentiation (LTP), occurs following persistent, high - frequency stimulation of the synapse.

Not exact matches

How much breast milk you produce depends again on whether you have been pregnant or breastfed before, the frequency and effectiveness of breast stimulation by both the infant and the pump, and the use of hand expression and breast massage prior to stimulation.

4 — Keep up frequency of breast stimulation when you are away from baby to keep up your milk supply.

What I do suggest to moms who need to increase their milk supply is to encourage baby to feed frequently and increase frequency of breast stimulation.

These «frequency days» will make up for any decreased stimulation by being separated from baby.

Breastfeeding frequency may be less important than the degree of nipple stimulation or breast emptying.

To test the idea, Snyder and colleagues exposed subjects to low - frequency magnetic pulses (the technology is called transcranial magnetic brain stimulation, or TMS) that suppressed part of their brain function.

So they turned to living, anesthetized mice, attached electrodes to their scalps, and directed 2000 and 2010 hertz signals so that they produced a low - frequency, 10 hertz stimulation at the hippocampus, a deep - brain structure involved in learning and memory.

Two groups of children (ages 8 to 12) participated in a series of tests in which researchers administered tactile stimulation (low - frequency vibrations) to the skin of their fingers.

«We found both the spatial arrangement of the rat heart cells and the electrical stimulation frequency affect propulsion,» says Parker.

1987 In the first reported therapeutic use of high - frequency deep - brain stimulation (DBS), French doctors implanted electrodes in a patient's brain to send impulses to a region associated with Parkinson's disease.

«We hope to show how, through auditory stimulation, it is possible to extend the range of frequencies we are able to process, and that neurosensory linguistic integration is highly efficient for people who want to learn, study or recover a language,» Cerna adds.

In a new study, published online Dec. 15 in the journal Current Biology, the researchers show for the first time that brain stimulation of specific neurons at a specific frequency can improve timing in mice that are missing dopamine.

In a pilot study conducted by scientists at the Ruhr - University Bochum, high frequency repetitive stimulation was investigated as a therapeutic approach for these patients.

Sure enough, the participants reported greater awareness and control of their dreams after stimulation at 40 hertz, the frequency of gamma waves, but not at other frequencies (Nature, doi.org/sqt).

They asked volunteers to come into the lab on many different nights to receive stimulation at different frequencies, or a sham treatment.

Stimulation was bipolar, with the electrodes placed 1.5 mm apart (surface area, 0.059 cm2), with a cycle of 5 seconds on and 5 seconds off at a frequency of 50 Hz and a pulse width of 300 μsec.

A study analyzing the positive and negative effects of energy drinks on athletes has seen that, although in principle their sports performance was seen to improve by between 3 % and 7 %, there was also an increase in the frequency of insomnia, nervousness and the level of stimulation in the hours following competition.

To address the fatigue characteristics of isolated skeletal muscles, we dissected the fast extensor digitorum longus (EDL) and slow soleus muscles from anesthetized mice and subjected them to a repeated contraction protocol in which muscles were stimulated for 330 ms every second for 6 minutes at a stimulation frequency of 40 Hz.

Through repeated stimulation with high - frequency bursts of light to the hippocampal memory circuit in AD mice, the team was able to boost the number of spines to levels indistinguishable from those in control mice.

We made the following assumptions: (1) the responses of pairs of units, or of a given unit at two different times, were conditionally independent given the stimulus; (2) the expected firing rate of unit in time bin was a function of the recent history of stimulation — that is, of the spectrogram segment (where is the full sound spectrogram, is frequency, and is a history index, covering 20 bins — i.e., 100 ms); and (3) the observed firing rate of unit at time,, was the result of an inhomogeneous Poisson process, with for some function.

Isometric contractions were stimulated in muscles ex vivo using a Grass Technologies S48 stimulator at a stimulation frequency of 120 Hz for EDL muscles and 80 Hz for soleus muscles, a stimulation current of 28 V, and duration of 500 ms. Muscle fatigue was analyzed using a repeated stimulation protocol lasting 6 minutes and consisting of repeated 40 - Hz tetanic trains that occurred once every second and lasted 330 ms (62).

«However, the energy drinks increased the frequency of insomnia, nervousness and the level of stimulation in the hours following the competition.»

* Deep brain stimulation can reduce seizure frequency and improve quality of life for patients with drug - resistant epilepsy.

Low - frequency median nerve stimulation, paired with suprathreshold transcranial magnetic stimulation (TMS) over the optimal site for activation of the abductor pollicis brevis (APB) muscle induces a

Acute remapping within the motor system induced by low - frequency repetitive transcranial magnetic stimulation.

Parkinson's disease patients treated with low - frequency deep brain stimulation show significant improvements in swallowing dysfunction and freezing of gait over typical high - frequency treatment.

«This is the first study to successfully treat swallowing dysfunction, and one of the first to treat difficulty with gait, using this unusual low - frequency 60Hz stimulation,» said study author and principal investigator Tao Xie, MD, PhD, Assistant Professor of Neurology at the University of Chicago.

Preconditioning of low - frequency repetitive transcranial magnetic stimulation with transcranial direct current stimulation: evidence for homeostatic plasticity in the human motor cortex.

Depending on stimulation parameters (frequency, intensity, pulse duration, stimulation site), repetitive TMS (rTMS) to specific cortical regions can either increase or decrease the excitability of the affected brain structures.

In a randomized, double - blind, sham - controlled, multi-center study with a parallel design, Shirota et al (2013) examined the effectiveness and stimulation frequency dependence of rTMS over the supplementary motor area (SMA) in PD.

By central registration, participants were assigned to 1 of 3 arms of the study: low - frequency (1 - Hz) rTMS, high - frequency (10 - Hz) rTMS, and realistic sham stimulation.

January 27, 2015 Low - frequency deep brain stimulation improves difficult - to - treat Parkinson's symptoms Parkinson's disease patients treated with low - frequency deep brain stimulation show significant improvements in swallowing dysfunction and freezing of gait over typical high - frequency treatment.

We then combined confocal microscopy and electrophysiology to explore the interactions between temperature, adrenergic stimulation and contraction frequency on the temporal and spatial properties of Δ [Ca2 +] i, and the excitation profiles of AP and ICa in isolated myocytes.

Some patients find so much relief from the TENS therapy that they have a similar device, called Interstim, surgically implanted in their lower backs so that they have constant electrical stimulation to treat urgency - frequency syndrome as well as urinary retention when other treatments have failed.

Unregulated production of glutamate at sound frequencies for which there is no external stimulation could be the cause of tinnitus.

The high frequency electrical stimulation activates low threshold skin and muscle receptors (mediated by the monoamine transmitters) and causes the midbrain to bypass the endorphin system.

Sound therapy aims to return the body and mind to the ultimate frequency, and research has shown that vibroacoustic stimulation can induce relaxation and lower cortisol levels and improve quality of life.

«The company makes high - frequency spinal cord stimulation (SCS) devices that treat chronic back and leg pain more effectively and with better clinical outcomes than competing SCS devices from traditional players,» he said.