Motivational intensity modulates attentional scope: evidence from behavioral and ERP studies.

abstract：:The topography and receptive field (RF) organization of neurones in the trunk zone of the thalamic ventrobasal complex (VB) projecting to the homologous zone of the ipsilateral first somatosensory area (SI) were studied in the cat by performing experiments of retrograde neuronal tracing and microelectrode recording. P...

journal_title：Experimental brain research

authors： Barbaresi P,Conti F,Manzoni T

更新日期：1984-01-01 00:00:00

abstract：:We sought to determine whether mirror-symmetrical limb movements (so-called anti-pointing) elicit a pattern of endpoint bias commensurate with perceptual judgments. In particular, we examined whether asymmetries related to the perceptual over- and under-estimation of target extent in respective left and right visual s...

journal_title：Experimental brain research

authors： Heath M,Maraj A,Gradkowski A,Binsted G

更新日期：2009-01-01 00:00:00

abstract：:The distributions of the kainate/DL-alpha-amino-3-hydroxy-5-methylisoxazolepropionic acid (KA/ AMPA) receptors GluR1 and calcium-activated neutral protease II (calpain II) in the hippocampus of normal and kainate-lesioned rats were studied by immunocytochemistry. There was a reduction in GluR1 immunoreactivity and a s...

journal_title：Experimental brain research

authors： Ong WY,Garey LJ,Tan KK

更新日期：1997-01-01 00:00:00

abstract：:It is not evident how the small effects of the flankers of the Ebbinghaus figure on peak grip aperture (PGA) should be interpreted. One interpretation is that the flankers influence the estimated size, which in turn influences the grasp. If this interpretation is correct, then only the size-dependent aspects of the gr...

journal_title：Experimental brain research

authors： de Grave DD,Biegstraaten M,Smeets JB,Brenner E

更新日期：2005-05-01 00:00:00

abstract：:Nonlinear analysis of the multifocal cortical visual evoked potential has allowed the identification of neural generation of higher-order nonlinear components by magnocellular and parvocellular neural streams. However, the location of individual brain sources that make such contributions to these evoked responses has ...

journal_title：Experimental brain research

authors： Crewther DP,Brown A,Hugrass L

更新日期：2016-07-01 00:00:00

abstract：:The ventral medial nucleus of the thalamus (VM) has been shown in rats and cats to constitute a common target for nigro- and cerebello-thalamic pathways. In the present study the responses of VM neurons to ipsilateral substantia nigra (SN) and contralateral cerebellar nuclei stimulation were analyzed in the rat. The t...

journal_title：Experimental brain research

authors： Chevalier G,Deniau JM

更新日期：1982-01-01 00:00:00

abstract：:Neural cuffs, implanted around various hindlimb nerves (sural, common peroneal, posterior tibial), were used to deliver brief stimulus trains to unrestrained cats walking on a treadmill. The resulting perturbations of the step cycle were evaluated by analyzing the EMG bursts recorded from the ankle extensors and by hi...

journal_title：Experimental brain research

authors： Duysens J,Stein RB

更新日期：1978-06-19 00:00:00

abstract：:In this study, transcranial magnetic stimulation (TMS) of the primary motor hand area was used to test cortical excitability in Parkinson's disease (PD) patients. Motor evoked potentials (MEPs) to TMS were studied at rest by utilising distinct paired-pulse TMS protocols. Out of 29 untreated PD patients and 29 healthy ...

journal_title：Experimental brain research

authors： Pierantozzi M,Palmieri MG,Marciani MG,Bernardi G,Giacomini P,Stanzione P

更新日期：2001-11-01 00:00:00

abstract：:Quantitative in situ hybridization was used to examine the expression of mRNA for nerve growth factor (NGF) and its receptors, p140Trk (TrkA) and p75LNGFR (LNGFR), in different brain regions of adult (3-month-old) and aged (27-month-old) Wistar rats. The brain regions studied were hippocampus (dentate gyrus, CA3 regio...

journal_title：Experimental brain research

authors： Hasenöhrl RU,Söderstróm S,Mohammed AH,Ebendal T,Huston JP

更新日期：1997-04-01 00:00:00

abstract：:Previous work has suggested that conscious error awareness may fluctuate with levels of attention. Here, we explore this relationship by showing that error awareness can be impaired when exogenous support to attentional systems is reduced by decreasing task demands. Twenty participants performed a manual Go/No-Go resp...

journal_title：Experimental brain research

authors： Shalgi S,O'Connell RG,Deouell LY,Robertson IH

更新日期：2007-09-01 00:00:00

abstract：:Changes in the direction of the line of sight (gaze) allow successive sampling of the visual environment. Saccadic eye movements accomplish this goal when the head does not move. Medium-lead burst neurons (MLBs) in the paramedian pontine reticular formation (PPRF) discharge a high frequency burst of action potentials ...

journal_title：Experimental brain research

authors： Walton MM,Freedman EG

更新日期：2011-10-01 00:00:00

abstract：:Objective attempts to characterize postural control in subjects with cerebellar (Cb) pathology have focused primarily on sagittal plane responses to static standing, semi-dynamic standing, and platform perturbation. Repeated, dynamic, functional movement may provide a better opportunity to study the effects of ataxia ...

journal_title：Experimental brain research

authors： Hudson CC,Krebs DE

更新日期：2000-05-01 00:00:00

abstract：:This report describes two models of human behavior when detecting displacements of joints that allow one to compare and integrate findings from different proprioception tests in a quantitative way. Results from various tests have led to different and often conflicting conclusions about proprioceptive behaviors and the...

journal_title：Experimental brain research

authors： Clark FJ,Deffenbacher KA

更新日期：1996-12-01 00:00:00

abstract：:In a previous study, we found that haptic guidance from a robotic steering wheel can improve short-term learning of steering of a simulated vehicle, in contrast to several studies of other tasks that had found that the guidance either impairs or does not aid motor learning. In this study, we examined whether haptic gu...

journal_title：Experimental brain research

authors： Marchal-Crespo L,McHughen S,Cramer SC,Reinkensmeyer DJ

更新日期：2010-03-01 00:00:00

abstract：:Interval timing deficiencies in Parkinson's disease (PD) patients have been a matter of debate. Here we test the possibility of PD heterogeneity as a source for this discrepancy. Temporal performance of PD patients and control subjects was assessed during two interval tapping tasks and during a categorization task of ...

journal_title：Experimental brain research

authors： Merchant H,Luciana M,Hooper C,Majestic S,Tuite P

更新日期：2008-01-01 00:00:00

abstract：:Young children rely heavily on vision for postural control during the transition to walking. Although by 10 years of age, children have automatic postural responses similar to adults, it is not clear when the integration of sensory inputs becomes fully developed. The purpose of this study was to examine this transitio...

journal_title：Experimental brain research

authors： Sparto PJ,Redfern MS,Jasko JG,Casselbrant ML,Mandel EM,Furman JM

更新日期：2006-01-01 00:00:00

abstract：:Cultured rat hippocampal neurons with short processes were investigated using the whole cell voltage clamp under conditions appropriate for isolating Na+ currents. After incubation of the neuron culture for a period of 15-30 min in 1 mM sodium valproate, several parameters of the Na+ current were changed. The peak Na+...

journal_title：Experimental brain research

authors： Van den Berg RJ,Kok P,Voskuyl RA

更新日期：1993-01-01 00:00:00

abstract：:Muscular fatigue, which reduces force output and position sense, often leads to increased sway and potential balance impairments. In contrast, visually-guided saccadic eye movements (saccades) can attenuate sway more than fixating gaze on an external target. The goals of this study were to determine whether the use of...

journal_title：Experimental brain research

authors： Yeomans MA,Nelson AG,MacLellan MJ,Hondzinski JM

更新日期：2018-12-01 00:00:00

abstract：:Two experiments were conducted to determine the effects of conditioned circling on the concentrations of dopamine (DA), 3,4-dihydroxyphenylacetic acid (DOPAC) and homovanillic acid (HVA) within discrete regions of the striatum (STR). The first study assessed the inherent regional distributions of these compounds with ...

journal_title：Experimental brain research

authors： Szostak C,Jakubovic A,Phillips AG,Fibiger HC

更新日期：1989-01-01 00:00:00

abstract：:The activity of voltage-gated K(+) channels (Kv) can be dynamically modulated by several events, including neurotransmitter stimulated biochemical cascades mediated by G protein-coupled receptors such as 5-HT2 receptors (5-HT2Rs). Activation of 5-HT2A/CR inhibits the Shaker-like K(+) channels Kv1.1 and Kv1.2, and this...

journal_title：Experimental brain research

authors： D'Adamo MC,Servettini I,Guglielmi L,Di Matteo V,Di Maio R,Di Giovanni G,Pessia M

更新日期：2013-10-01 00:00:00

abstract：:We examined opioid binding in fractions with disconnected nerve endings (secretosomes) which were prepared from porcine neurohypophyses by centrifugation in a discontinuous Percoll gradient. Specific (= displaceable) binding was observed with 3H-etorphine and with 3H-diprenorphine, two ligands with low selectivity for...

journal_title：Experimental brain research

authors： Falke N,Martin R

更新日期：1988-01-01 00:00:00

abstract：:The contribution of ventral stream information to the variability of movement has been the focus of much attention, and has provided numerous researchers with conflicting results. These results have been obtained through the use of discrete pointing movements, and as such, do not offer any explanation regarding how ve...

journal_title：Experimental brain research

authors： Rolheiser TM,Binsted G,Brownell KJ

更新日期：2006-09-01 00:00:00

abstract：:3,4-Methylene-dioxy-N-methylamphetamine (MDMA, 'ecstasy') has a broad spectrum of molecular targets in the brain, among them receptors and transporters of the serotonergic (5-hydroxytryptamine, 5-HT) and noradrenergic systems. Its action on the serotonergic system modulates motor systems in rodents and humans. Althoug...

journal_title：Experimental brain research

authors： Liebig L,von Ameln-Mayerhofer A,Hentschke H

更新日期：2015-01-01 00:00:00

abstract：:Single fibre recordings were performed from the auditory nerve of the caiman, Caiman crocodilus. All neurones were spontaneously active (1-80 imp/s). Clicks evoked multiple peaks in the post stimulus time histogram spaced at 1/CF. At high intensities irregularities were observed. The latencies of the first peak observ...

journal_title：Experimental brain research

authors： Klinke R,Pause M

更新日期：1980-01-01 00:00:00

abstract：:It is well known that visual expectation and attention modulate object perception. Yet, the mechanisms underlying these top-down influences are not completely understood. Event-related potentials (ERPs) indicate late contributions of expectations to object processing around the P2 or N2. This is true independent of wh...

journal_title：Experimental brain research

authors： Stojanoski BB,Niemeier M

更新日期：2015-10-01 00:00:00

abstract：:We introduce a method for quantification of movement sway--spontaneous migrations of the center of pressure (COP) during its voluntary shifts. Subjects stood on a force platform or on a board with a narrow support surface ("unstable board") and performed voluntary cyclic shifts of the COP at different frequencies. Mov...

journal_title：Experimental brain research

authors： Latash ML,Ferreira SS,Wieczorek SA,Duarte M

更新日期：2003-06-01 00:00:00

abstract：:After minimizing proprioceptive input from the legs by ischemia without degradation of muscle force and excluding visual stabilization by eye closure, a characteristic anterior-posterior postural sway around 1 Hz was observed in three normal subjects. This is similar to the instability seen in two tabes dorsalis patie...

journal_title：Experimental brain research

authors： Mauritz KH,Dietz V

更新日期：1980-01-01 00:00:00

abstract：:Threshold elevation in the periphery of the visual field as a consequence of repetitive stimulation can be abolished by stimulating a mirror-symmetric position in the contralateral visual half-field. A patient suffering from a congenital malformation of the right superior colliculus did not exhibit threshold elevation...

journal_title：Experimental brain research

authors： Zihl J,von Cramon D

更新日期：1979-05-02 00:00:00

abstract：:Perception of whether a given behavior is possible typically reflects a person's action capabilities even before the behavior is performed and even when the person has undergone recent changes to their action capabilities. Importantly, perception of affordances for a given behavior also reflects impending changes to a...

journal_title：Experimental brain research

authors： Wagman JB

更新日期：2012-06-01 00:00:00

abstract：:Functional decline in locomotion is common among the elderly, and the prevalence of gait disorders increases with age. Recently, increasing interest has been focused on the influence of age-related decline in brain function and neurological disorders such as dementia and Alzheimer's disease on gait capacity. However, ...

journal_title：Experimental brain research

authors： Harada T,Miyai I,Suzuki M,Kubota K

更新日期：2009-03-01 00:00:00