Linear addition of optokinetic and vestibular signals in the vestibular nucleus.

abstract：:The aim of the present study was to assess the effects of dopaminergic medication on the selection-for-action mechanisms in Parkinson's disease (PD). PD subjects were tested after not having taken medication for at least 12 h ("Off' state) and then retested 1-2 h after medication ("On" state). A three-dimensional kine...

journal_title：Experimental brain research

authors： Castiello U,Bonfiglioli C,Peppard RF

更新日期：2000-11-01 00:00:00

abstract：:Functionally and anatomically, the orbicularis oculi (OO) muscle can be subdivided in a pretarsal, a preseptal, and an orbital portion. In the rhesus monkey, fluorescent and neuronal retrograde tracing experiments were performed in the pretarsal or the orbital portion of the OO muscle, or both, using fast blue, diamid...

journal_title：Experimental brain research

authors： VanderWerf F,Aramideh M,Otto JA,Ongerboer de Visser BW

更新日期：1998-08-01 00:00:00

abstract：:Studies on grasp control underlying manual dexterity in people with Parkinson disease (PD) suggest that anticipatory grasp control is mainly unaffected during discrete tasks using simple two-digit grasp. Nevertheless, impaired hand function during daily activities is one of the most disabling symptoms of PD. As many d...

journal_title：Experimental brain research

authors： Albert F,Diermayr G,McIsaac TL,Gordon AM

更新日期：2010-05-01 00:00:00

abstract：:The activity of subthalamic nucleus neurons related to motor performance was studied in three unrestrained cats operantly conditioned to perform a lever-release movement. The movement was initiated either rapidly after the trigger stimulus (a brief sound) in a simple reaction-time paradigm or after a delay in trials i...

journal_title：Experimental brain research

authors： Cheruel F,Dormont JF,Farin D

更新日期：1996-03-01 00:00:00

abstract：:Extracellular focal synaptic potentials (FSPs) were recorded in forelimb segments of cats in the region where corticospinal volleys (pyramidal stimulation) gave a maximal FSP. No FSP was recorded in this region on stimulation of the medial part of the lateral reticular nucleus (LRN), provided that ventral spinal pathw...

journal_title：Experimental brain research

authors： Alstermark B,Lundberg A

更新日期：1982-01-01 00:00:00

abstract：:Limb proprioception is an awareness by the central nervous system (CNS) of the location of a limb in three-dimensional space and is essential for movement and postural control. The CNS uses the position of the head and neck when interpreting the position of the upper limb, and altered input from neck muscles may affec...

journal_title：Experimental brain research

authors： Zabihhosseinian M,Holmes MW,Murphy B

更新日期：2015-05-01 00:00:00

abstract：:We have tested the hypothesis that complex cell receptive fields are made up of subfields which, for a given cell, have either exclusively even or exclusively odd symmetry. To do this we have measured the response of complex cells in the visual cortex of the cat to members of pairs of spatially limited even-symmetric ...

journal_title：Experimental brain research

authors： Gaska JP,Pollen DA,Cavanagh P

更新日期：1987-01-01 00:00:00

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：:The synRas transgenic mice express constitutively activated Valin12-Harvey Ras in postnatal neocortical pyramidal neurons. This leads to somatodendritic hypertrophy, higher densities of spines and synapses, and an enhancement of synaptic long-term potentiation associated with an increased glutamate receptor-mediated a...

journal_title：Experimental brain research

authors： Patz S,Colovic C,Wawro S,Lafenetre P,Leske O,Heumann R,Schönfelder S,Tomaschewski J,Räk A,Wahle P

更新日期：2009-12-01 00:00:00

abstract：:Deep brain stimulation of the subthalamic nucleus (STN DBS) significantly improves clinical motor symptoms, as well as intensive aspects of movement like velocity and amplitude in patients with Parkinson's disease (PD). However, the effects of bilateral STN DBS on integrative and coordinative aspects of motor control ...

journal_title：Experimental brain research

authors： David FJ,Goelz LC,Tangonan RZ,Metman LV,Corcos DM

更新日期：2018-04-01 00:00:00

abstract：:1. The responses are described of cochlear nucleus neurons of anaesthetized cats as a function of time in dependence on intensity and frequency of tonal stimuli. Depending on spectral properties three types are distinguished in the group of spontaneously active units: A type (activation only) AS type (activation and s...

journal_title：Experimental brain research

authors： van Gisbergen JA,Grashuis JL,Johannesma PI,Vendrik AJ

更新日期：1975-10-24 00:00:00

abstract：:Projections from the posterior thalamic regions to the striatum were studied in the cat by the anterograde tracing method after injecting wheat germ agglutinin-horseradish peroxidase conjugate (WGA-HRP) into the caudalmost regions of the lateroposterior thalamic nucleus (caudal LP), suprageniculate nucleus (Sg) and ma...

journal_title：Experimental brain research

authors： Takada M,Itoh K,Yasui Y,Sugimoto T,Mizuno N

更新日期：1985-01-01 00:00:00

abstract：:Nociceptive suppression of tonic voluntary electromyographic (EMG) activity in human hand muscles (cutaneous silent period, CSP) is in its functional organization consistent with a spinal protective reflex. Motoneuronal excitability and its modulation may also be investigated by conditioned motor evoked potentials (ME...

journal_title：Experimental brain research

authors： Kofler M,Valls-Solé J,Fuhr P,Schindler C,Zaccaria BR,Saltuari L

更新日期：2008-07-01 00:00:00

abstract：:Control of velocity in rapid flexion movements of the interphalangeal joint of the thumb was investigated by examining movement trajectories and patterns of activity in the extensor pollicis longus (EPL) and flexor pollicis longus (FPL) muscles. Although velocity was controlled with considerable accuracy, it was not s...

journal_title：Experimental brain research

authors： Milner TE

更新日期：1986-01-01 00:00:00

abstract：:Hemi-seesaw nystagmus (hemi-SSN) is a jerk-waveform nystagmus with conjugate torsional and disjunctive vertical components. Halmagyi et al. in Brain 117(Pt 4):789-803 (1994), reported hemi-SSN in patients with unilateral lesions in the vicinity of the Interstitial Nucleus of Cajal (INC) and suggested that an imbalance...

journal_title：Experimental brain research

authors： Das VE,Leigh RJ,Swann M,Thurtell MJ

更新日期：2010-09-01 00:00:00

abstract：:Precise left-hand movements take longer than right-hand movements (for right-handers). To quantify how left-hand movements are affected by task difficulty and phase of movement control, we manipulated the difficulty of repetitive speeded aiming movements while participants used the left or right hand. We observed left...

journal_title：Experimental brain research

authors： Vaughan J,Barany DA,Rios T

更新日期：2012-07-01 00:00:00

abstract：:The microtubule associated tau protein becomes hyperphosphorylated in Alzheimer's disease (AD). While hyperphosphorylation promotes neurodegeneration, the cause and consequences of this abnormal modification are poorly understood. As impaired energy metabolism is an important hallmark of AD progression, we tested whet...

journal_title：Experimental brain research

authors： Ahmad W

更新日期：2018-11-01 00:00:00

abstract：:Albino mammals show very characteristic deficits in their optokinetic system, and albino ferrets are even optokinetically blind. To investigate the neuronal causes for this defect we compared the morphology of retinal slip cells in the pretectal nucleus of the optic tract and the dorsal terminal nucleus of the accesso...

journal_title：Experimental brain research

authors： Telkes I,Garipis N,Hoffmann KP

更新日期：2001-10-01 00:00:00

abstract：:The purpose of this study was to establish whether visual motion parallax participates in the control of postural sway. Body sway was measured in ten normal subjects by photoelectric recordings of head movements and by force-plate posturography. Subjects viewed a visual display ("background"), which briefly moved (2 s...

journal_title：Experimental brain research

authors： Bronstein AM,Buckwell D

更新日期：1997-02-01 00:00:00

abstract：:How do we achieve unitary perception of an object when it touches two parts of the sensory epithelium that are not contiguous? We investigated this problem with a simple psychophysical task, which we then used in an fMRI experiment. Two wooden rods were moved over two digits positioned to be spatially adjacent. The di...

journal_title：Experimental brain research

authors： Peelen MV,Rogers J,Wing AM,Downing PE,Bracewell RM

更新日期：2010-07-01 00:00:00

abstract：:In the present study, the sensitivity to sinusoidal linear accelerations in the plane of the utricular macula was tested in afferents. The head orientation relative to the translation axis was varied in order to determine the head position that elicited the maximal and minimal responses for each afferent. The response...

journal_title：Experimental brain research

authors： Si X,Angelaki DE,Dickman JD

更新日期：1997-11-01 00:00:00

abstract：:Several studies have shown that rapid manual aiming movements from one to the other wing of Müller-Lyer illusion figures are biased in a manner consistent with their influence on perceptual judgments. Two experiments examined the role of extent and position information in Müller-Lyer figures in biasing pointing moveme...

journal_title：Experimental brain research

authors： Predebon J

更新日期：2005-05-01 00:00:00

abstract：:Realistic appearance and complexity in the visual field are known to affect the strength of vection (visually induced self-motion perception). Although surface properties of materials are, therefore, expected to be visual features that influence vection, to date, the results have been mixed. Here, we used computer gra...

journal_title：Experimental brain research

authors： Morimoto Y,Sato H,Hiramatsu C,Seno T

更新日期：2019-10-01 00:00:00

abstract：:The pharmacology of synaptic transmission was studied in slices of rat piriform cortex using the selective non-NMDA glutamate receptor antagonist 6.7-dinitroquinoxaline-2,3-dione (DNQX) and the selective NMDA receptor antagonist D-2-amino-5-phosphonopentanoate (D-AP5). DNQX produced a dose-dependent blockade of synapt...

journal_title：Experimental brain research

authors： Jung MW,Larson J,Lynch G

更新日期：1990-01-01 00:00:00

abstract：:To investigate whether priming stimulation influences the responses of intracortical inhibitory and facilitatory motor circuits to a subsequent plasticity-inducing inhibitory theta burst TMS paradigm. Using standard transcranial magnetic stimulation (TMS) procedures, MEP amplitude, short-interval intracortical inhibit...

journal_title：Experimental brain research

authors： Doeltgen SH,Ridding MC

更新日期：2011-12-01 00:00:00

abstract：:Abnormal automatic postural responses are thought to contribute to balance impairment in Parkinson's disease. However, because postural responses are modifiable by stance, we have speculated that some postural abnormalities in patients with Parkinson's disease are secondary to their stooped stance. We have studied thi...

journal_title：Experimental brain research

authors： Bloem BR,Beckley DJ,van Dijk JG

更新日期：1999-02-01 00:00:00

abstract：:Hand shaping during prehension involves intricate coordination of a complex system of bones, joints, and muscles. It is widely hypothesized that the motor system uses strategies to reduce the degrees of independent control. Both biomechanical constraints that result in coupling of the fingers and joints and neural syn...

journal_title：Experimental brain research

authors： Prosise JF,Hendrix CM,Ebner TJ

更新日期：2015-02-01 00:00:00

abstract：:Owing to the flexibility and redundancy of neuromuscular and skeletal systems, humans can trace the same hand trajectory in space with various arm configurations. However, the joint trajectories of typical unrestrained movements tend to be consistent both within and across subjects. In this paper we propose a method t...

journal_title：Experimental brain research

authors： Kang T,He J,Tillery SI

更新日期：2005-12-01 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：:We applied vibration at various rates to the biceps tendon of a passive, restrained arm in normal human subjects and measured its effect on the perception of forearm position and the perception of forearm velocity. The disturbances of limb position perception and limb velocity perception depended on the vibration rate...

journal_title：Experimental brain research

authors： Sittig AC,Denier van der Gon JJ,Gielen CC

更新日期：1987-01-01 00:00:00