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Activation and receptors
Activation cycle of G-proteins by G-protein-coupled receptors
Activation of the μ-opioid receptors is associated with analgesia, sedation, euphoria, physical dependence, and respiratory depression.
Activation of the binding receptors activates PLC, which cleaves PIP < sub > 2 </ sub > in the egg plasma membrane, releasing IP < sub > 3 </ sub > into the egg cell cytoplasm.
Activation of CB1 and CB2 receptors in animals has shown a strong anti-inflammatory effect.
Activation of A2A receptors produces a constellation of responses that in general can be classified as anti-inflammatory.
Activation of the receptors stimulates phospholipase C, which in turn opens the ion channel TRPC2.
Activation of neurons that contain V2 receptors, V2Rs, however, promote distinct oscillations in the posterior of the AOB.
Activation of NMDA receptors results in the opening of an ion channel that is nonselective to cations with an equilibrium potential near 0 mV.
Activation of NMDA receptors requires binding of glutamate or aspartate ( aspartate does not stimulate the receptors as strongly ).
Activation of g-protein-coupled receptors can have this effect ; as can the binding of hormones to intra-or extracellular receptors.
Activation of NMDA-type glutamate receptors, which belong to a class of ionotropic glutamate receptors ( iGluRs ), is required for calcium entry into the CA1 postsynaptic cell.
Activation of GC-C amplifies the excitatory cell response which is modulated by glutamate and acetylcholine receptors.
Activation of this pathway can also stimulate presynpatic glutamate release and cause an upregulation of AMPA receptors postsynaptically
Activation of presynaptic CB < sub > 1 </ sub > receptors is also known to inhibit sympathetic innervation of blood vessels and contributes to the suppression of the neurogenic vasopressor response in septic shock.
Activation of peripheral CB1 receptors contributes to hemorrhagic and endotoxin-induced hypotension.
Activation of these receptors causes vasoconstriction of those dilated arteries.
Activation of D < sub > 1 </ sub >- like family receptors is coupled to the G protein G < sub > αs </ sub >, which subsequently activates adenylate cyclase, increasing the intracellular concentration of the second messenger cyclic adenosine monophosphate ( cAMP ).
Activation of D < sub > 2 </ sub >- like family receptors is coupled to the G protein G < sub > αi </ sub >, which directly inhibits the formation of cAMP by inhibiting the enzyme adenylate cyclase.
Activation of these receptors in the brainstem appears to inhibit sympathetic nervous system output and lower blood pressure.
Activation of these receptors activates the phospholipase C second messenger system.
Activation of central dopamine receptors improves the symptoms of Parkinson's disease ; however, activation of peripheral dopamine receptors causes nausea and vomiting.

Activation and results
Activation of the vagus nerve by aconitine results in bradycardia.
Activation of a GEF typically activates its cognate G-protein, while activation of a GAP results in inactivation of the cognate G-protein.
Activation of particular VDCCs allows Ca < sup > 2 +</ sup > entry into the cell, which, depending on the cell type, results in muscular contraction, excitation of neurons, up-regulation of gene expression, or release of hormones or neurotransmitters.
Activation of gene expression through different promoters results in alternative splicing ; however, the physiological significance of specific ACC isozymes remains unclear.
Activation of the RAAS results in increased retention of water and sodium by the kidneys, vasoconstriction, and other effects that result in increased blood volume.

Activation and phosphorylation
Activation of the receptor leads to phosphorylation and recruitment of the JAK kinase, which in turn phosphorylates LIFRβ.
Activation of the type 1 receptor leads to phosphorylation of Smad proteins, which translocate to the nucleus to activate gene expression.
Activation consists of phosphorylation of a serine on position 19 ( Ser19 ) on the MLC < sub > 20 </ sub > light chain, which causes a conformational change that increases the angle in the neck domain of the myosin heavy chain, which corresponds to the part of the cross-bridge cycle where the myosin head is unattached to the actin filament and relocates to another site on it.
Activation of PARs also led to an increase in tyrosine phosphorylation of ZAP-70 and SLP-76, two key proteins in T cell receptor ( TCR ) signalling.

Activation and membrane
Activation of the L-type channel also causes a mechanical interaction between it and calcium-release channels located on the adjacent sarcoplasmic reticulum membrane.

Activation and increases
Activation of these neurons increases dopamine and norepinephrine in these areas, and excites histaminergic tuberomammillary neurons increasing histamine levels there.
Activation of calcineurin causes increases in hypertrophy.
Activation of RAGE induces production of a variety of cytokines, including TNFβ, which mediates an inhibition of metalloproteinase and increases production of mesangial matrix, leading to glomerulosclerosis and decreasing kidney function in patients with unusually high AGE levels.

Activation and If
If NAA is conducted directly on irradiated samples it is termed Instrumental Neutron Activation Analysis ( INAA ).

Activation and end
Activation of the rear spoiler will allow the air pressure generated at the back of the vehicle to force air into the cooling ducts located at either end of the spoiler which become uncovered upon application of it.

Activation and result
Activation of cryptochrome may affect the light-sensitivity of retinal neurons, with the overall result that the bird can " see " the magnetic field.
Activation of cryptochrome may affect the light-sensitivity of retinal neurons, with the overall result that the animal can " see " the magnetic field.

Activation and is
* Activation energy, which is defined as the amount of energy required to make the reaction start and carry on spontaneously.
Activation of each phase is dependent on the proper progression and completion of the previous one.
Activation in the amygdala is negatively correlated with gambler's fallacy-the more activity exhibited in the amygdala, the less likely an individual is to fall prey to the gambler's fallacy.
Activation with epithermal neutrons is known as Epithermal NAA ( ENAA ).
Activation with fast neutrons is termed Fast NAA ( FNAA ).
In some cases irradiated samples are subjected to chemical separation to remove interfering species or to concentrate the radioisotope of interest, this technique is known as Radiochemical Neutron Activation Analysis ( RNAA ).
At a more advanced level, the Arrhenius Activation energy term from the Arrhenius equation is best regarded as an experimentally determined parameter that indicates the sensitivity of the reaction rate to temperature.
Activation of this receptor is also linked to the dysphoria sometimes experienced by users of opiates either therapeutically or recreationally.
Activation of the EGFR by H. pylori is associated with altered signal transduction and gene expression in host epithelial cells that may contribute to pathogenesis.
Activation of the anterior cingulate cortex and vagus nerve is similarly implicated in the experience of heartbreak whether due to social rejection or bereavement.
Activation of the fibrinolytic system generates plasmin ( in the presence of thrombin ), which is responsible for the lysis of fibrin clots.
Activation of prothrombin is crucial in physiological and pathological coagulation.
* Activation of the MAPK pathways: Of the three major MAPK cascades, TNF induces a strong activation of the stress-related JNK group, evokes moderate response of the p38-MAPK, and is responsible for minimal activation of the classical ERKs.
Activation is sometimes done offline by entering the key, or with software like Windows 7, online activation is required to prevent multiple people using the same key.
Activation of rods and cones is actually hyperpolarization ; when they are not being stimulated, they depolarize and release glutamate continuously.
Activation of a single unit of rhodopsin, the photosensitive pigment in rods, can lead to a large reaction in the cell because the signal is amplified.

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