Sentences with phrase «brain signals associated»

To figure that out, the researchers looked how the brain signals associated with reinforcement learning changed as the learning process unfolded from trial to trial.

During repeated trials at small set sizes where working memory is active, brain signals associated with RPE started out high in the first few trials, and then quickly dropped off — a sign that cognitive processes are informing the neural signaling associated with reinforcement learning.

Following hours of practice, a computer learned to identify brain signals associated with different wrist and finger movements.

Not exact matches

The trick is to teach the user how to associate particular brain signals with specific tasks by presenting a repeating stimulus — auditory, visual or tactile — and getting the user to focus on it.

The researchers collected the brain activity — five additional sensors were placed on the volunteers» faces to allow researchers to screen for the impact of random movement, including eye blinks — and then mapped the signals back to the brain to determine how specific parts of the brain are involved in discrete tasks associated with walking, said Trieu Phat Luu, co-first author and a post-doctoral researcher in the Noninvasive Brain - Machine Interface System Laboratory abrain activity — five additional sensors were placed on the volunteers» faces to allow researchers to screen for the impact of random movement, including eye blinks — and then mapped the signals back to the brain to determine how specific parts of the brain are involved in discrete tasks associated with walking, said Trieu Phat Luu, co-first author and a post-doctoral researcher in the Noninvasive Brain - Machine Interface System Laboratory abrain to determine how specific parts of the brain are involved in discrete tasks associated with walking, said Trieu Phat Luu, co-first author and a post-doctoral researcher in the Noninvasive Brain - Machine Interface System Laboratory abrain are involved in discrete tasks associated with walking, said Trieu Phat Luu, co-first author and a post-doctoral researcher in the Noninvasive Brain - Machine Interface System Laboratory aBrain - Machine Interface System Laboratory at UH.

The tamed birds also had higher levels of serotonin, both a signaling molecule in the brain that may be involved with fear responses and a hormone associated with metabolism and feeding in chickens.

For example, being hungry affects the body, and signals associated with metabolism, as well as signals in the brain.

«Because you've associated things over time, you're going to associate a certain triggering point in the frontal lobe or the basal forebrain and tell certain regions of the brain stem to adopt a state of activity as if it were receiving signals from the body that were consonant with emotion x.

Brain cells not normally associated with communication send out a signal when they detect blood glucose levels are running low, and this triggers the stomach contractions.

In the hippocampus and the amygdala, areas of the brain thought to be associated with episodic memory, researchers had shown that the chemical signaling agent called glutamate acts like a key in the lock of some of these protein «flood gates.»

A key problem has been separating these precise brain signals from those associated with other brain activity, and the highly artificial signals generated by the exoskeleton.

The study identified five genes predictive of feeding success representing a range of biological systems: sensory integration (NPHP4, PLXNA1); hypothalamic regulation, a region of the brain that plays a key role in hunger signaling (NPY2R); facial development (WNT3, a gene associated with lip and palate development); and energy expenditure (AMPK, a regulator of whole body energy balance).

Functional MR imaging taken while the animals received either a juice reward or VTA stimulation revealed that both induced activation of brain regions that previous studies in humans and other primates have associated with reward signaling by means of the neurotransmitter dopamine.

Scientists already employ fMRI, which uses changes in blood flow as a proxy for brain activity, to scan the brains of restrained monkeys, but Berns wanted to train dogs to willingly enter the machine and learn simple things, such as associating a hand signal with a reward of a hot dog, all the while staying still enough to collect interpretable brain scans.

«The idea is that if you can couple those motor signals that are associated with moving the same - sided limb with the actual movements of the hand, new connections will be made in your brain that allow the uninjured areas of your brain to take over control of the paralyzed hand,» Leuthardt said.

The team found changes in the activity of nearly 40 genes in three brain regions known to be associated with depression and anxiety (Science Signaling, doi.org/b4rz).

Yes, getting older slows us down: parts of the brain associated with memory and executive function shrink, myelin sheaths around our neurons start to erode, slowing down signalling, and arteries narrow diminishing blood supply.

Now the research team, led by first author Ko - Woon Lee, a research associate in the lab, wanted to see if p11 had a similar effect on a different signaling system within the brain.

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.»

Lipoic acid restores age - associated impairment of brain energy metabolism through the modulation of Akt / JNK signaling and PGC1α transcriptional pathway.

Abbreviations: Aβ, amyloid β - peptide; AD, Alzheimer's disease; ALS, amyotrophic lateral sclerosis; Ambra1, activating molecule in Beclin -1-regulated autophagy; AMPK, AMP - activated protein kinase; APP, amyloid precursor protein; AR, androgen receptor; Atg, autophagy - related; AV, autophagic vacuole; Bcl, B - cell lymphoma; BH3, Bcl - 2 homology 3; CaMKKβ, Ca2 + - dependent protein kinase kinase β; CHMP2B, charged multivesicular body protein 2B; CMA, chaperone - mediated autophagy; 2 ′ 5 ′ ddA, 2 ′, 5 ′ - dideoxyadenosine; deptor, DEP - domain containing mTOR - interacting protein; DRPLA, dentatorubral pallidoluysian atrophy; 4E - BP1, translation initiation factor 4E - binding protein - 1; Epac, exchange protein directly activated by cAMP; ER, endoplasmic reticulum; ERK1 / 2, extracellular - signal - regulated kinase 1/2; ESCRT, endosomal sorting complex required for transport; FAD, familial AD; FDA, U.S. Food and Drug Administration; FIP200, focal adhesion kinase family - interacting protein of 200 kDa; FoxO3, forkhead box O3; FTD, frontotemporal dementia; FTD3, FTD linked to chromosome 3; GAP, GTPase - activating protein; GR, guanidine retinoid; GSK3, glycogen synthase kinase 3; HD, Huntington's disease; hiPSC, human induced pluripotent stem cell; hVps, mammalian vacuolar protein sorting homologue; IKK, inhibitor of nuclear factor κB kinase; IMPase, inositol monophosphatase; IP3R, Ins (1,4,5) P3 receptor; I1R, imidazoline - 1 receptor; JNK1, c - Jun N - terminal kinase 1; LC3, light chain 3; LD, Lafora disease; L - NAME, NG - nitro - L - arginine methyl ester; LRRK2, leucine - rich repeat kinase 2; MIPS, myo - inositol -1-phosphate synthase; mLST8, mammalian lethal with SEC13 protein 8; MND, motor neuron disease; mTOR, mammalian target of rapamycin; mTORC, mTOR complex; MVB, multivesicular body; NAC, N - acetylcysteine; NBR1, neighbour of BRCA1 gene 1; NOS, nitric oxide synthase; p70S6K, ribosomal protein S6 kinase - 1; PD, Parkinson's disease; PDK1, phosphoinositide - dependent kinase 1; PE, phosphatidylethanolamine; PI3K, phosphoinositide 3 - kinase; PI3KC1a, class Ia PI3K; PI3KC3, class III PI3K; PI3KK, PI3K - related protein kinase; PINK1, PTEN - induced kinase 1; PKA, protein kinase A; PLC, phospholipase C; polyQ, polyglutamine; PS, presenilin; PTEN, phosphatase and tensin homologue deleted from chromosome 10; Rag, Ras - related GTP - binding protein; raptor, regulatory - associated protein of mTOR; Rheb, Ras homologue enriched in brain; rictor, rapamycin - insensitive companion of mTOR; SBMA, spinobulbar muscular atrophy; SCA, spinocerebellar ataxia; SLC, solute carrier; SMER, small - molecule enhancer of rapamycin; SMIR, small - molecule inhibitor of rapamycin; SNARE, N - ethylmaleimide - sensitive factor - attachment protein receptor; SOD1, copper / zinc superoxide dismutase 1; TFEB, transcription factor EB; TOR, target of rapamycin; TSC, tuberous sclerosis complex; ULK1, UNC -51-like kinase 1; UVRAG, UV irradiation resistance - associated gene; VAMP, vesicle - associated membrane protein; v - ATPase, vacuolar H + - ATPase; Vps, vacuolar protein sorting

In addition to the analysis of human brain activity which is associated with the perception of chemosensory anxiety signals, it has been examined whether the neuronal activity changes during the conscious perception of the chemosensory stimuli as odors.

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

'' [This] raises the possibility that this receptor and its signaling pathway in the brain may have a role in people with compulsive behavioral problems,» says senior author Nicole Calakos, MD, PhD, associate professor of neurology and neurobiology at Duke University Medical Center in Durham, North Carolina.

It is found in the brain and spinal cord and is associated with inflammatory processes and pain — it acts as a neurotransmitter to carry pain signals to the nervous system.

When asked about the portion of the study associating high - glycemic foods with increased hunger, Wald explains that when you eat sugar, it quickly crosses the brood brain barrier and signals to the brain, «feed me.»

These include insoluble extracellular plaques made of beta - amyloid peptide (Aβ); intracellular neurofibrillary tangles (NFTs) resulting from the hyperphosphorylation of tau (a microtubule - associated protein); loss of hippocampal neurons; a decrease in production of brain acetylcholine; and a marked decline in glucose usage in regions of the brain associated with memory and learning.5,11,20 - 22 All of these changes can be logically explained as the sequelae resulting from long - term dysregulation of insulin signaling and glucose metabolism.

The new study found that prebiotic treatment alters the levels of brain - derived neurotrophic factor (BDNF), which is important for neuronal growth and survival; N - methyl - D - aspartate (NMDA) receptor subunits; and amino acids associated with signaling by the neurotransmitter glutamate, an excitatory neurotransmitter4, 12,13.

The researchers measured brain activity — the blood oxygen level — dependent (BOLD) signal — in brain regions that have previously been associated with food reward processing.

And in a 2009 report in the Journal of Nutrition, researchers said they examined a group of studies that showed fruits such as blueberries and strawberries, which are high in antioxidants, can decrease a type of stress in cells associated with aging and increase the signaling capabilities in brains.

Lactobacillus bacteria are capable of producing gamma - aminobutyric acid (GABA), one of the main chemical used to transmit signals in the brain, and an increase in GABA levels in the GI tract is associated with increased levels in the brain.

fMRI scans of males» brain activity after smelling tears revealed that males» brains had less activity in regions associated with sexual arousal, which suggests that odorless tears contain a chemical signal that men unconsciously detect.