(n.) The whitish mass of soft matter (the center of the nervous system, and the seat of consciousness and volition) which is inclosed in the cartilaginous or bony cranium of vertebrate animals. It is simply the anterior termination of the spinal cord, and is developed from three embryonic vesicles, whose cavities are connected with the central canal of the cord; the cavities of the vesicles become the central cavities, or ventricles, and the walls thicken unequally and become the three segments, the fore-, mid-, and hind-brain.
(n.) The anterior or cephalic ganglion in insects and other invertebrates.
(n.) The organ or seat of intellect; hence, the understanding.
(n.) The affections; fancy; imagination.
(v. t.) To dash out the brains of; to kill by beating out the brains. Hence, Fig.: To destroy; to put an end to; to defeat.
(v. t.) To conceive; to understand.
Example Sentences:
(1) Here we have asked whether protection from blood-borne antigens afforded by the blood-brain barrier is related to the lack of MHC expression.
(2) The extents of phospholipid hydrolysis were relatively low in brain homogenates, synaptic plasma membranes and heart ventricular muscle.
(3) First results let us assume that clinically silent TIAs also (in analogy to clinically silent brain infarctions) could be detected and located.
(4) Brain and ganglia of embryonic Periplaneta americana were grown for 2 to 3 weeks in a chemically defined medium.
(5) The results indicated that neuropsychological measures may serve to broaden the concept of intelligence and that a brain-related criterion may contribute to a fuller understanding of its nature.
(6) To quantify the size of the lesion in mice, the area of the infarct on the brain surface was assessed planimetrically 48 h after MCA occlusion by transcardial perfusion of carbon black.
(7) However, CT will be insensitive in the detection of the more cephalic proximal lesions, especially those in the brain stem, basal cisterns, and skull base.
(8) The fine structure of neurofibrillary tangles in the hippocampal gyrus, substantia nigra, pontine nuclei and locus coeruleus of the brain was postmortem studied in a case of progressive supranuclear palsy.
(9) We similarly evaluated the ability of other phospholipids to form stable foam at various concentrations and ethanol volume fractions and found: bovine brain sphingomyelin greater than dipalmitoyl 3-sn-phosphatidylcholine greater than egg sphingomyelin greater than egg lecithin greater than phosphatidylglycerol.
(10) This study examined the [3H]5-HT-releasing properties of 3,4-methylenedioxymethamphetamine (MDMA) and related agents, all of which cause significant release of [3H]5-HT from rat brain synaptosomes.
(11) In the present investigation we monitored the incorporation of [14C] from [U-14C]glucose into various rat brain glycolytic intermediates of conscious and pentobarbital-anesthetized animals.
(12) Cranial MRI revealed delayed myelination in the white matter but no brain malformation.
(13) When compared with lissencephalic species, a great horizontal fibrillary system (which is vertically arranged in gyral regions) was observed in convoluted brains.
(14) In more than 70 per cent of these, brain injury is the decisive lethal factor.
(15) Brain damage may be followed by a number of dynamic events including reactive synaptogenesis, rerouting of axons to unusual locations and altered axon retraction processes.
(16) Based on our results, we propose the following hypotheses for the neurochemical mechanisms of motion sickness: (1) the histaminergic neuron system is involved in the signs and symptoms of motion sickness, including vomiting; (2) the acetylcholinergic neuron system is involved in the processes of habituation to motion sickness, including neural store mechanisms; and (3) the catecholaminergic neuron system in the brain stem is not related to the development of motion sickness.
(17) The regional distribution of beta-adrenoceptor subtypes was found to be similar to that seen in the rat brain.
(18) We assessed changes in brain water content, as reflected by changes in tissue density, during the early recirculation period following severe forebrain ischemia.
(19) If tracer is introduced into the carotid artery after osmotic treatment, brain uptake is increased by a net factor of 50 (a factor of 70 due to elevation of PA, multiplied by 7 due to infusion by the carotid route) as compared to uptake by normal, untreated brain with infusion into a peripheral vein.
(20) This study examined both the effect of variations in optical fiber tip and in light wavelength on laser-induced hyperthermia in rat brain.
Lyra
Definition:
(n.) A northern constellation, the Harp, containing a white star of the first magnitude, called Alpha Lyrae, or Vega.
(n.) The middle portion of the ventral surface of the fornix of the brain; -- so called from the arrangement of the lines with which it is marked in the human brain.
Example Sentences:
(1) The discrimination performance of Megaderma lyra was studied in a two-alternative, forced-choice experiment using phantom targets with different internal delays and relative amplitudes of the two copies.
(2) Peroxidase-anti-peroxidase immunocytochemistry, applied on serial semithin epoxy resin sections, was used to examine the localization of endogenous GABA in horizontal cells in the retina of a marine teleost, the dragonet (Callionymus lyra L.).
(3) The divergent evolution of Macroderma gigas and Megaderma lyra, two representatives of the family Megadermatidae, is discussed.
(4) Dialectic Criminology is defined, in Lyra's conception, as a Classified Criminology, synthetizing both the psychological approach (clinical criminology, or micro-criminology), and the sociological approach (sociological criminology or macro-criminology), according to an anthropological basic frame of reference, which constitutes the new and original prerequisite.
(5) The hemoglobin of the Indian false vampire Megaderma lyra contains only one component.
(6) A detailed comparison of the unfolding programs LYRA and SAND is made, and reasons are given for our choice of SAND in our application.
(7) There were lush velvet palazzos from Maslea ; pastel-coloured flared jumpsuits by Syomirizwa Gupta ; satin emerald-green dresses with puffed shoulders from Foulard; trendy burkini-wear by Lyra ; and beaded evening gowns by Sahee London that could have floated off the pages of an F Scott Fitzgerald novel.
(8) The displaced small amacrine cells (DSA cells) in the dorsal pure cone part of the retina of the marine teleost Callionymus lyra have been analysed in a combined light and electron microcopical study.
(9) Mission scientists will use Kepler's 95 megapixel digital camera to survey the brightness of 100,000 stars in the constellations of Cygnus and Lyra every half an hour.
(10) In more than three years surveying 150,000 stars in the constellations of Cygnus and Lyra, Kepler has located 132 planets and more than 2,700 further candidate planets, which will need independent corroboration from other telescopes before they are confirmed hits.
(11) An allele at B1 produces the frenata pattern; an allele at B2 produces zonata; together they produce lyra.
(12) They are orbiting a star called Kepler-20 almost 1,000 light years away in the constellation Lyra .
(13) The horizontal cell system in the retina of the fish Callionymus lyra L. was investigated light microscopically and electron microscopically.
(14) But there have been so many good female characters for girls in cinema – Lyra in The Golden Compass, Katniss in The Hunger Games, Hit-Girl in Kick-Ass .
(15) Prof. Lyra discusses in this article the basic problem of criminological sciences, stating that its essential object of study is the determination of the genesis of crime.
(16) To this aim, according to Prof. Lyra, it is necessary to overcome merely biological or psychological theories, and the new sociologisms, which cannot explain deviant behavior without falling into dogmatism or relativism.