Functional MRI evidence for subcortical participation in conceptual reasoning skills.

abstract：:As manifestations of prion diseases include disturbances of hypothalamic and pituitary functions, we tested the hypothesis that the cellular prion protein (PrPC) has a role as modulator of the hypothalamic-pituitary-adrenal axis. The level of corticosterone and adrenocorticotropic hormone were compared in PrPC null (P...

journal_title：Neuroreport

authors： Sanchez-Alavez M,Criado JR,Klein I,Moroncini G,Conti B

更新日期：2008-10-08 00:00:00

abstract：:In the present study, the activity changes of chicken retinal ganglion cells in response to light stimuli with defined contrast were investigated, in the presence of various levels of sustained background illumination. Following a step increase of light illumination, the firing rate of most retinal ganglion cells incr...

journal_title：Neuroreport

authors： Chen AH,Zhou Y,Gong HQ,Liang PJ

更新日期：2005-03-15 00:00:00

abstract：:The in-vivo extracellular release of acetylcholine (ACh) from the striatum of rats was measured by intracerebral microdialysis. The ACh levels were first estimated under normoxic conditions, after which the rats were exposed to either 10% or 5% oxygen for 1 h. The average ACh content was 2.9 pmol/20 min. During hypoxi...

journal_title：Neuroreport

authors： Chleide E,Ishikawa K

更新日期：1990-11-01 00:00:00

abstract：:The effect of thyroid hormone (TH) deficiency on the expression of neurofilament (NF) proteins and their intracellular distribution has been examined in primary cultures of neurons from embryonic rat cerebra. Northern blot analysis showed that in TH-deficient (THdef) neurons, the expression of all three NF mRNAs (NF-L...

journal_title：Neuroreport

authors： Rahaman SO,Ghosh S,Mandal SK,Sarkar PK

更新日期：2000-08-21 00:00:00

abstract：:Sciatic nerve resection leaving a 15 mm gap could not be repaired by bridging the stumps with a silicone tube prefilled with a laminin gel. However, when purified olfactory ensheathing cells (EC) were added to the gel filling the tube, successful axonal regeneration was observed in 50% of rats. With 12 mm gaps, regene...

journal_title：Neuroreport

authors： Verdú E,Navarro X,Gudiño-Cabrera G,Rodríguez FJ,Ceballos D,Valero A,Nieto-Sampedro M

更新日期：1999-04-06 00:00:00

abstract：:Participation of the neuronal nicotinic receptor subunit alpha6 in a physiologically relevant receptor has yet to be demonstrated, but its high degree of expression in catecholaminergic nuclei has attracted considerable interest. To investigate the pattern of expression of the alpha6 protein, a subunit specific antibo...

journal_title：Neuroreport

authors： Göldner FM,Dineley KT,Patrick JW

更新日期：1997-08-18 00:00:00

abstract：:Extracellular recordings from neurosecretory cells in the hypothalamic paraventricular nucleus (PVN) displayed either an excitation or no response following electrical stimulation (5 Hz) of the A1 noradrenergic region of the ventrolateral medulla, and exhibited either an increase or no effect in neuronal activity in r...

journal_title：Neuroreport

authors： Tanaka J,Nomura M,Saito H

更新日期：1992-03-01 00:00:00

abstract：:Neuroimaging techniques, such as fMRI, PET and near-infrared spectroscopy, monitor task-related neuronal activations in the brain indirectly through the associated neurovascular/metabolic responses. To assess the primary neuronal activations directly, magnetoencephalography was combined here with a mechanical modulati...

journal_title：Neuroreport

authors： Mackert BM,Wübbeler G,Leistner S,Trahms L,Curio G

更新日期：2001-06-13 00:00:00

abstract：:Emerging evidence has suggested that alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionate (AMPA) protects neurons from glutamate-induced neurotoxicity. In this study, we examined the effect of AMPA on the cell surface expression of the N-methyl-D-aspartate (NMDA) receptor, a central player in glutamate-induced neurot...

journal_title：Neuroreport

authors： Nishimoto T,Kihara T,Akaike A,Niidome T,Sugimoto H

更新日期：2009-01-28 00:00:00

abstract：:Neurone-specific enolase immunoreactivity (NSE-IR) was examined in the hippocampal dentate gyrus 5 h, 24 h and 6 days following local injection of N-methyl-D-aspartate (NMDA), and was compared with Nissl substance and acid fuchsin staining. Five and 24 hours post-injection extracellular NSE-IR was increased, and the n...

journal_title：Neuroreport

authors： Comer AM,Lees GJ,Lipski J

更新日期：1994-12-20 00:00:00

abstract：:It is not clear whether attention is necessary or not for consciousness. We studied the relationship between attention and consciousness by tracking their electrophysiological correlates. The participants attended to visual targets, ignored nontargets in the prespecified visual field and ignored all stimuli in the opp...

journal_title：Neuroreport

authors： Koivisto M,Revonsuo A

更新日期：2007-05-28 00:00:00

abstract：:To observe sequential stages in tactile pattern discrimination and their modification with and without attention, we used whole-head anatomically constrained magnetoencephalography to spatiotemporally map brain responses. Eight, normal, right-handed participants discriminated between two patterns presented on the palm...

journal_title：Neuroreport

authors： Reed CL,Hagler DJ Jr,Marinkovic K,Dale A,Halgren E

更新日期：2009-07-01 00:00:00

abstract：:The major central nervous system (CNS) myelin proteolipid (PLP) is also expressed in the peripheral nervous system (PNS). This paper gives evidence that DM-20, an isoform of PLP, also occurs in rat sciatic nerves, where, in contrast to what is seen in CNS myelin, it predominates over PLP. This conclusion was reached o...

journal_title：Neuroreport

authors： Pham-Dinh D,Birling MC,Roussel G,Dautigny A,Nussbaum JL

更新日期：1991-02-01 00:00:00

abstract：:A number of epidemiological studies suggest that estrogen therapy is linked to a reduced risk of developing Alzheimer's disease (AD). The present study was conducted to evaluate the effect of 17beta-estradiol on beta-amyloid (Abeta)-induced toxicity and was performed in rat pheochromocytoma PC 12 cells by measuring th...

journal_title：Neuroreport

authors： Svensson AL,Nordberg A

更新日期：1999-11-26 00:00:00

abstract：:The aim of this study was to define the effects of a potent inhibitor of tyrosine phosphatases, sodium orthovanadate (0.1-100 microM for up to 48 h), on dentate gyrus cells (DGC) in culture. Treatment with 100 microM orthovanadate evoked a delayed form of cell death. To examine the possible involvement of apoptosis in...

journal_title：Neuroreport

authors： Figiel I,Kaczmarek L

更新日期：1997-07-28 00:00:00

abstract：:Disturbances in methyl-carbon metabolism, which result in hyperhomocysteinemia, have been associated with schizophrenia. Homozygosity for the T677 allele of the methylenetetrahydrofolate reductase (MTHFR) gene, which encodes for a thermolabile enzyme associated with hyperhomocysteinemia, has been found to be increased...

journal_title：Neuroreport

authors： Virgos C,Martorell L,Simó JM,Valero J,Figuera L,Joven J,Labad A,Vilella E

更新日期：1999-07-13 00:00:00

abstract：:We used isolated IgG antibodies selective for P2X3 receptors to study the ultrastructural distribution of these receptors in rat sensory neurons. In trigeminal ganglia, P2X3 receptor immunoreactivity occurred in small and large nerve cell bodies and their processes. Endoplasmic reticulum and Golgi apparatus were heavi...

journal_title：Neuroreport

authors： Llewellyn-Smith IJ,Burnstock G

更新日期：1998-08-03 00:00:00

abstract：:Transcranial magnetic stimulation (TMS) was applied over the frontal eye field (FEF) and the supplementary eye field (SEF) regions before execution of the first saccade in a double step task. When applied over the FEF, stimulation increased the percentage error in amplitude of the contralateral second saccade as compa...

journal_title：Neuroreport

authors： Tobler PN,Müri RM

更新日期：2002-02-11 00:00:00

abstract：:We examined the effect of a nonphotic stimulus (running in a novel wheel) on the induction of Fos-related proteins in the two well-established neural components of the circadian clock: the suprachiasmatic nucleus (SCN) and the intergeniculate leaflet (IGL) of the lateral geniculate complex. There was no induction of F...

journal_title：Neuroreport

authors： Janik D,Mrosovsky N

更新日期：1992-07-01 00:00:00

abstract：:We determined whether acute compensatory feeding pattern changes after bulbectomy persist on a chronic basis, or whether physiological adaptation occurs to normalize acute changes. Rats were randomized to olfactory bulbectomy or sham operation; all had jugular vein catheterization. Food intake, meal number and size we...

journal_title：Neuroreport

authors： Meguid MM,Koseki M,Yang ZJ,Gleason JR,Laviano A

更新日期：1997-04-14 00:00:00

abstract：:The functions of the fields of the mammalian auditory cortex in sound perception and recognition are unknown. We used Fos (a protein of the inducible immediate-early gene c-fos) as a cellular marker of activated brain areas to show in the mouse (Mus domesticus) that sound is processed differentially in auditory cortic...

journal_title：Neuroreport

authors： Fichtel I,Ehret G

更新日期：1999-08-02 00:00:00

abstract：:We investigated some in vitro pharmacological properties of a novel human dopamine D2-like receptor antagonist, YM-50001 [(R)-5-chloro-4-cyclopropylacarbonylamino-2-methoxy-N-[1-(3-methox ybenzyl)- 3-pyrrolidinyl]benzamide monooxalate]. Receptor binding studies revealed that YM-50001 had a potent affinity for human D4...

journal_title：Neuroreport

authors： Hidaka K,Tada S,Matsumoto M,Ohmori J,Maeno K,Yamaguchi T

更新日期：1996-11-04 00:00:00

abstract：:Multiple signal classification is an alternative to the traditional dipole fitting source analysis methods. Our aim was to assess the clinical usefulness of this algorithm and to compare the localization of the epileptiform electroencephalography discharges with the regions of altered cerebral blood flow in 10 patient...

journal_title：Neuroreport

authors： Beniczky S,Oturai PS,Alving J,Sabers A,Herning M,Fabricius M

更新日期：2006-08-21 00:00:00

abstract：:Correcting for eddy currents, movement-induced distortion and gradient inhomogeneities is imperative when processing diffusion MRI (dMRI) data, but is highly computing resource-intensive. Recently, Compute Unified Device Architecture (CUDA) was implemented for the widely-used eddy-correction software, 'eddy', which re...

journal_title：Neuroreport

authors： Maller JJ,Grieve SM,Vogrin SJ,Welton T

更新日期：2020-07-10 00:00:00

abstract：:Exosomes derived from Schwann cells have been known to have a variety of functions in the development and repair of the peripheral nervous system, and cyclic AMP (cAMP) is a key inducer of Schwann cell differentiation. In the present study, we aimed to study the effect of exosomes derived from differentiated Schwann c...

journal_title：Neuroreport

authors： Sohn EJ,Park HT,Shin YK

更新日期：2020-05-07 00:00:00

abstract：:High K+- or caffeine-induced Ca2+ signal was studied in freshly dissociated carp retinal ON-type bipolar cells using a confocal laser-scanning microscope. In response to 35 mM K+ exposure, a rise in [Ca2+]i appeared in both the terminal and soma, but was absent after removal of external Ca2+ or in the presence of 100 ...

journal_title：Neuroreport

authors： Wu D,Zhu PH

更新日期：1999-12-16 00:00:00

abstract：:It has recently been proposed that brain responses in the gamma-range (> 20 Hz) include information about specific cognitive processes in the human brain. Empirical data substantiating this assumption come from EEG and MEG recordings during visual and language processing. For example, 30 Hz activity has been found to ...

journal_title：Neuroreport

authors： Pulvermüller F,Lutzenberger W,Preissl H,Birbaumer N

更新日期：1995-10-23 00:00:00

abstract：:In a three-stimulus oddball task, the amplitude of P3a elicited by deviant stimuli increases with an increase in the difficulty of discriminating between standard and target stimuli (i.e. task-difficulty effect on P3a), indicating that attentional capture by deviant stimuli is enhanced with an increase in task difficu...

journal_title：Neuroreport

authors： Sugimoto F,Kimura M,Takeda Y,Katayama J

更新日期：2017-08-16 00:00:00

abstract：:We have found that regeneration of the rat sciatic nerve is stimulated if the rats are exposed to a 50 Hz sinusoidal magnetic field. In this study we investigated the effect of a Ca2+ antagonist, methoxyverapamil (D600) on this response. D600 was administered to the regenerating segment of the nerve via implanted osmo...

journal_title：Neuroreport

authors： Rusovan A,Kanje M

更新日期：1992-09-01 00:00:00

abstract：:As the most numerous cell type in the brain, astrocytes are coupled via gap junction channels. It is believed that communication among astrocytes is normally regulated by extracellular ions, neurotransmitters and neuromodulators. However, the level of astrocytic coupling is altered in abnormal conditions such as strok...

journal_title：Neuroreport

authors： Bani-Yaghoub M,Felker JM,Naus CC

更新日期：1999-12-16 00:00:00