Spatio-temporal and kinematic analysis of pointing movements performed by cerebellar patients with limb ataxia.

abstract：:The role of kinaesthetic afferences in controlling coupling of voluntary oscillation of the hand and foot, both in-phase and anti-phase, was investigated by modifying the mechanical properties of one of the two segments (the hand) with applied inertial or elastic loads. Loads consisted of a lead disk, rotating coaxial...

journal_title：Experimental brain research

authors： Baldissera F,Cavallari P

更新日期：2001-07-01 00:00:00

abstract：:The contribution of different cortical regions to visuospatial attention can be probed with the help of perturbation techniques, such as transcranial magnetic stimulation (TMS). Repetitive TMS (rTMS) has also been suggested as a tool for the therapy of brain injuries, by adjusting the neural excitability of injured or...

journal_title：Experimental brain research

authors： Jin Y,Hilgetag CC

更新日期：2008-07-01 00:00:00

abstract：:Two versions of the hypothesis that discrete movements are produced by shifts in the system's equilibrium point are considered. The first suggests that shifts are monotonic and end near the peak velocity of movement, and the second presumes that they are nonmonotonic ("N-shaped") and proceed until the end of movement....

journal_title：Experimental brain research

authors： Feldman AG,Adamovich SV,Levin MF

更新日期：1995-01-01 00:00:00

abstract：:Many age-related degenerative diseases of the central nervous system (CNS) increasingly appear to have similarities in their underlying causes. By applying knowledge between disorders, and in particular between degenerative diseases of different components of the CNS (e.g. the eye and the brain), we can begin to eluci...

journal_title：Experimental brain research

authors： Harvey H,Durant S

更新日期：2014-11-01 00:00:00

abstract：:The visual responses of postarcuate neurons have been studied in alert behaving monkeys (Macaca nemestrina). In particular, the effect of eye position on the location of visual responses in respect to the body has been examined. It was found that a large percentage of bimodal (visual and somatosensory) neurons have vi...

journal_title：Experimental brain research

authors： Gentilucci M,Scandolara C,Pigarev IN,Rizzolatti G

更新日期：1983-01-01 00:00:00

abstract：:Light microscopic autoradiography and electron microscopy were used to trace the nigrothalamic projections and to study the sites of termination of this pathway in the cat. Injections of tritiated amino acids or electrolytic lesions were placed in the substantia nigra pars reticularis (SNr). An accumulation of radioac...

journal_title：Experimental brain research

authors： Kultas-Ilinsky K,Ilinsky IA,Massopust LC,Young PA,Smith KR

更新日期：1978-11-15 00:00:00

abstract：:Artificial sensations can be produced by direct brain stimulation of sensory areas through implanted microelectrodes, but the perceptual psychophysics of such artificial sensations are not well understood. Based on prior work in cortical stimulation, we hypothesized that perceived intensity of electrical stimulation m...

journal_title：Experimental brain research

authors： Fridman GY,Blair HT,Blaisdell AP,Judy JW

更新日期：2010-06-01 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：:1. Unit spikes of burst neurons were extracellularly recorded in the pontomedullary reticular formation of the cat. These neurons were identified by their burst activity coincident with the quick inhibitory phase of the contralateral abducens nerve during vestibular nystagmus and their antidromic activation from the c...

journal_title：Experimental brain research

authors： Hikosaka O,Igusa Y,Nakao S,Shimazu H

更新日期：1978-11-15 00:00:00

abstract：:The adaptation and habituation characteristics produced by the repeated presentation of a moving visual stimulus were studied in single cells in the pigeon's optic tectum. Units located near the surface in the stratum opticum showed little adaptation. However, cells located in deeper layers exhibited varying rates and...

journal_title：Experimental brain research

authors： Woods EJ,Frost BJ

更新日期：1977-03-30 00:00:00

abstract：:In addition to giving primary projections to the parabrachial and periaqueductal gray regions, ascending lamina I projections course through and terminate in brainstem regions known to contain catecholaminergic cells. For this reason, double-labeling experiments were designed for analysis with light and electron micro...

journal_title：Experimental brain research

authors： Westlund KN,Craig AD

更新日期：1996-07-01 00:00:00

abstract：:Cultured olfactory bulb cells from embryonic mice had ultrastructural characteristics similar to those of many cell types in the intact adult mouse olfactory bulb. Identified cultured cells included mitral/tufted cells, granule cells, short-axon cells, and fibrous and protoplasmic astrocytes. Cultured neurons were fou...

journal_title：Experimental brain research

authors： Fracek SP Jr,Guo L,Schafer R

更新日期：1994-01-01 00:00:00

abstract：:Mental practice (MP) is a promising adjuvant to physical practice that involves many of the same mechanisms and takes on many of the same properties as physical practice. This study compared efficacy of a "massed" MP regimen versus a "distributed" MP regimen on upper extremity (UE) motor impairment and functional limi...

journal_title：Experimental brain research

authors： Page SJ,Hade EM,Pang J

更新日期：2016-10-01 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：:In the present work, we characterize electrophysiologically a commissural subcortical pathway which is related to binocular interactions in the nucleus of the optic tract (NOT) of the opossum. The main role played by the circuit comprising this pathway seems to be in relaying information coming from the ipsilateral ey...

journal_title：Experimental brain research

authors： Pereira Júnior A,Volchan E,Bernardes RF,Rocha-Miranda CE

更新日期：1994-01-01 00:00:00

abstract：:Injections of combined lectin-conjugated and unconjugated horseradish peroxidase were made in the dorsal (d) and ventral (v) divisions of the paramedian reticular nucleus (PRN), a precerebellar relay nucleus, of the cat. The origins of supramedullary afferent projections to the PRN were identified in the pons, midbrai...

journal_title：Experimental brain research

authors： Elisevich K,Hrycyshyn AW,Flumerfelt BA

更新日期：1985-01-01 00:00:00

abstract：:Prior studies identify two cortical areas, posterior parahippocampal cortex and retrosplenial cortex, that preferentially activate to images of real-world scenes compared to images of other meaningful visual stimuli such as objects and faces. Behavioral and computational studies suggest that sub-categories of real-wor...

journal_title：Experimental brain research

authors： Henderson JM,Larson CL,Zhu DC

更新日期：2007-05-01 00:00:00

abstract：:Ideal grasping movements should maintain an appropriate probability of success, while controlling movement-related costs, in the presence of varying visual (and motor) uncertainty. It is often assumed that the probability of errors is managed by adjusting a margin for error in hand opening (e.g., opening the hand wide...

journal_title：Experimental brain research

authors： Keefe BD,Suray PA,Watt SJ

更新日期：2019-04-01 00:00:00

abstract：:Chronic loss of vestibular function modifies the role of neck afferents in human perception of self-motion. We characterized this change by comparing the self-motion perception of patients with chronic vestibular loss (Ps) to that of normal subjects (Ns). Stimuli consisted of sinusoidal horizontal rotations (0.025-0.4...

journal_title：Experimental brain research

authors： Schweigart G,Heimbrand S,Mergner T,Becker W

更新日期：1993-01-01 00:00:00

abstract：:Unilateral isometric muscle contractions increase motor-evoked potentials (MEPs) produced by transcranial magnetic stimulation not only in the contracting muscle but also in the resting contralateral homologous muscle. Corticospinal excitability in the M1 contralateral to the contracting muscle changes depending on th...

journal_title：Experimental brain research

authors： Uematsu A,Obata H,Endoh T,Kitamura T,Hortobágyi T,Nakazawa K,Suzuki S

更新日期：2010-09-01 00:00:00

abstract：:If horizontal saccades or smooth-pursuit eye movements are made with the line-of-sight at different elevations, the three-dimensional (3D) angular rotation axis of the globe tilts by half the vertical eye eccentricity. This phenomenon is named "half-angle rule" and is a consequence of Listing's law. It was recently fo...

journal_title：Experimental brain research

authors： Palla A,Straumann D,Obzina H

更新日期：1999-11-01 00:00:00

abstract：:The smooth pursuit eye movement system uses retinal information about the image-slip-velocity of the target in order to match the eye-velocity-in-space (i.e., gaze-velocity) to the actual target velocity. To maintain the target image on the fovea during smooth gaze tracking, and to compensate for the long delays invol...

journal_title：Experimental brain research

authors： Fukushima K,Yamanobe T,Shinmei Y,Fukushima J

更新日期：2002-07-01 00:00:00

abstract：:Pax genes are important modulators of CNS development. Pax7 and Pax6 polarise the neural tube and regionalise the brain. Pax7 is pivotal in specifying the superior colliculus/tectum, an important centre for integration of visuomotor responses and a target for Pax6+ retinal ganglion cell axons during retinocollicular m...

journal_title：Experimental brain research

authors： Thompson JA,Lovicu FJ,Ziman M

更新日期：2007-04-01 00:00:00

abstract：:This research is about the role of categorical and coordinate spatial relations and allocentric and egocentric frames of reference in processing spatial information. To this end, we asked whether spatial information is firstly encoded with respect to a frame of reference or with respect to categorical/coordinate spati...

journal_title：Experimental brain research

authors： Ruotolo F,Iachini T,Postma A,van der Ham IJ

更新日期：2011-10-01 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：:Thaw-mount autoradiography was used to map target neurons for tritiated steroids in the brains of ovariectomized rhesus monkeys. In five females, studies were performed 60 min after the administration of 3H-estradiol. Of these, two females were pretreated for five days with daily injections of 2 mg testosterone propio...

journal_title：Experimental brain research

authors： Rees HD,Bonsall RW,Michael RP

更新日期：1986-01-01 00:00:00

abstract：:Brain-damaged patients may extinguish contralesional stimuli when ipsilesional stimuli are presented simultaneously. Most theories of extinction postulate that stimuli compete for pathologically limited attentional resources with a bias to process ipsilesional over contralesional stimuli. Implicit in this view is the ...

journal_title：Experimental brain research

authors： Ricci R,Chatterjee A

更新日期：2004-07-01 00:00:00

abstract：:We examined the distribution of labeled neurons in the parabigeminal nucleus of the monkey following injections of retrograde fluorescent tracers into the superior colliculus. The extent of the visual field representation included in the injection site was assessed from the location of labeled cells in striate cortex....

journal_title：Experimental brain research

authors： Baizer JS,Whitney JF,Bender DB

更新日期：1991-01-01 00:00:00

abstract：:Transient changes in extracellular potassium concentration ([K+]o) and field potentials were evoked by 4-aminopyridine (4-AP; 50-100 microM) and recorded with ion-selective microelectrodes in CA1b, CA3b and dentate sectors of adult rat hippocampal slices. Long-lasting field potentials recurred at a frequency of approx...

journal_title：Experimental brain research

authors： Morris ME,Obrocea GV,Avoli M

更新日期：1996-04-01 00:00:00

abstract：:We investigated how neurons in the different motor areas of the frontal lobe reflect the movement dynamics, and how their neuronal activity undergoes plastic changes when monkeys adapt to perturbing forces (they learn new dynamics). Here we describe the results obtained in the dorsal premotor area (PMd) and ventral pr...

journal_title：Experimental brain research

authors： Xiao J,Padoa-Schioppa C,Bizzi E

更新日期：2006-01-01 00:00:00