Abstract:
:We investigated the association between the degree of lesion overlap with the corticospinal tract and walking performance before and after 4-weeks of partial body weight support (PBWS) treadmill training in 18 individuals (ten male, eight female) with a mean age 59 +/- 13 years (mean +/- SD), range 32-74 years, who were ambulant and 6 months from a subcortical ischaemic stroke. Lesion volumes were manually defined on high resolution T1-weighted 3T-MRI scans and a probabilistic map of the corticospinal tract created using diffusion tensor imaging data collected previously in healthy subjects. The percentage overlap between the lesion and the corticospinal tract was calculated for each patient. Walking performance was determined by measures of 10 m speed, spatiotemporal parameters, percentage recovery of centre of mass (CoM), walking symmetry and 2-min endurance walk prior to and following 4 weeks of treadmill training with PBWS that emphasised normal fast walking. Lesion overlap measures weakly correlated with walking performance measures. Spatiotemporal and performance measures changed in response to training, but spatial symmetry and mechanical energy recovery did not. Walking speed at entry to the study predicted change in response to training of 10 m walk time and swing time asymmetry. Age and lesion overlap did not add to prediction of outcome models. The extent of lesion overlap with the corticospinal tract was not strongly associated with either walking performance or response to gait retraining, despite the correlation of these parameters with upper limb recovery.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Dawes H,Enzinger C,Johansen-Berg H,Bogdanovic M,Guy C,Collett J,Izadi H,Stagg C,Wade D,Matthews PMdoi
10.1007/s00221-007-1237-0subject
Has Abstractpub_date
2008-03-01 00:00:00pages
325-33issue
2eissn
0014-4819issn
1432-1106journal_volume
186pub_type
杂志文章abstract::Intracellular recording techniques were used to test for cross-modality and topographic convergence among inputs to area 3a of cerebral cortex. Recordings were made within the projection area of group I afferent fibers of the deep radial nerve in barbiturate-anesthetized cats. Epsps were evoked in 90% of neurons (81/9...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00236532
更新日期:1985-01-01 00:00:00
abstract::In this study, we examined the relationship between a measure of cerebral lateralization--differences in tympanic temperature (T(Ty))--and questionnaire measures of inattentiveness and hyperactivity in both people and dogs. Theories of cerebral lateralization indicate that cerebral asymmetry may improve attentive beha...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-012-3093-9
更新日期:2012-06-01 00:00:00
abstract::The principal goal of our study is to gain an insight into the representation of peripersonal space. Two different experiments were conducted in this study. In the first experiment, subjects were asked to represent principal anatomical reference planes by drawing ellipses in the sagittal, frontal and horizontal planes...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-005-0121-z
更新日期:2006-02-01 00:00:00
abstract::Both human and animal research indicate that rapid eye movement sleep (REM) plays an important role in the processing of emotional information. REM is altered after fear conditioning in rats, but this alteration can be mitigated by exposure to a naïve conspecific. In addition, both the housing condition (isolated vs p...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-014-3828-x
更新日期:2014-05-01 00:00:00
abstract::Muscle activity patterns in some complex human jaw muscles appear to be task sensitive. However, it is presently uncertain how changes in motor task affect motor unit (MU) behaviour in the human temporalis muscle. In this study, activity was recorded from 40 MUs in the anterior region of the muscle. The lowest sustain...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00230303
更新日期:1993-01-01 00:00:00
abstract::Trace eyeblink conditioning was investigated in 31 patients with focal cerebellar lesions and 19 age-matched controls. Twelve patients presented with lesions including the territory of the superior cerebellar artery (SCA). In 19 patients lesions were restricted to the territory of the posterior inferior cerebellar art...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-005-0171-2
更新日期:2006-03-01 00:00:00
abstract::In a recent study (Whitwell et al. in Exp Brain Res 185:111-119, 2008), we showed that the visuomotor system is "cognitively impenetrable" to the extent that explicit predictive knowledge of the availability of visual feedback on an upcoming trial fails to optimize grasping. The results suggested that the effects of t...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-009-1737-1
更新日期:2009-04-01 00:00:00
abstract::Human sensorimotor synchronization is flexible but subject to temporal constraints. Previous research has shown that musicians tend to lose synchrony with target tones in an isochronous sequence when the sequence rate exceeds 8-10 Hz, presumably because phase correction ceases to function. The present study investigat...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-010-2462-5
更新日期:2011-01-01 00:00:00
abstract::Previously, we observed changes in the scale, rotation, and location of drawn shapes when subjects simultaneously performed a secondary task, but not in the shape or proportion of the drawing. We suggested the secondary task impacted motor planning and execution or proprioception of the primary task. To isolate for pr...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-013-3572-7
更新日期:2013-07-01 00:00:00
abstract::Variations of the µ-opioid receptor gene OPRM1 have been shown to modulate pain perception with some evidence pointing towards a modulation of not only physical but also "psychological pain". In line with suggestions of a common neural network involved in the processing of physical pain and negative and distressing st...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-015-4322-9
更新日期:2015-09-01 00:00:00
abstract::The behavioral relevance of neuronal activity in primate area MT for motion perception and control of visually guided eye movements is well documented. The projections of area MT comprise connections to subcortical structures and to the parietal network, both of which play a role in visuospatial transformation for gui...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-009-1771-z
更新日期:2009-12-01 00:00:00
abstract::The firing rate of an abducens motoneuron (AbMN) is linearly related to eye position with slope K, above recruitment threshold theta. Within the AbMN population K increases as theta increases. It is possible that these properties depend on the synaptic drives generated by the major premotor inputs to AbMNs, namely pos...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-002-1176-8
更新日期:2002-09-01 00:00:00
abstract::Tone bursts produced bands of selective 2-[14C]-deoxyglucose labelling in the inferior colliculus (IC) of the awake monkey. Low tone frequencies produced labelling in dorsal regions and high tone frequencies produced labelling in ventral regions. The position of the bands coincided with the position of a single unit w...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00237983
更新日期:1984-01-01 00:00:00
abstract::The eyeblink reflex is one of the most extensively studied behaviors in mammals. The active downward force that causes lid closure is controlled by the orbicularis oculi (OO) muscle. To augment our studies on the neurophysiology and plasticity of the rat eyeblink circuit, here we present the first anatomical paper to ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/pl00005729
更新日期:1997-08-01 00:00:00
abstract::We investigated the effect of musical expertise on sensitivity to asynchrony for drumming point-light displays, which varied in their physical characteristics (Experiment 1) or in their degree of audiovisual congruency (Experiment 2). In Experiment 1, 21 repetitions of three tempos x three accents x nine audiovisual d...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-009-1817-2
更新日期:2009-09-01 00:00:00
abstract::The photothrombotic ring stroke model with sustained underperfusion followed by late spontaneous reperfusion (Gu et al. 1999) was employed to study its morphological consequences. The exposed crania of adult male Wistar rats were subjected to a ring-shaped laser irradiation beam simultaneously with intravenous erythro...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s002210050672
更新日期:1999-03-01 00:00:00
abstract::Within-arm somatotopy was identified in multiple motor areas of six normal human subjects who performed a visuomotor tracking task during positron emission tomography (PET) measurement of relative cerebral blood flow (relCBF). A randomly moving target, presented on a computer monitor, was continuously followed with th...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00229666
更新日期:1993-01-01 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
pub_type: 杂志文章
doi:10.1007/s00221-005-0039-5
更新日期:2005-12-01 00:00:00
abstract::The position of the center of gravity (CG) is a reference value that is controlled by the nervous system during the performance of movements. In order to maintain equilibrium, leg movement is preceded by a shift of the CG towards the supporting side. This CG shift is initiated by an early displacement of the center of...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s002210050453
更新日期:1998-07-01 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
pub_type: 杂志文章
doi:10.1007/BF00235934
更新日期:1985-01-01 00:00:00
abstract::The control of eye movements depends in part on subcortical motor centres. Gaze is often directed towards salient visual stimuli of our environment with no conscious voluntary commands. To further understand to what extent preprogrammed eye movements can be triggered subcortically, we carried out a study in normal vol...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-006-0659-4
更新日期:2007-02-01 00:00:00
abstract::Sinusoidal translation while rotating at constant angular velocity about a vertical axis (translation while rotating, TWR) produces centripetal and translational accelerations along the direction of translation and an orthogonal Coriolis acceleration due to the translation in the rotating frame. Thus, a Coriolis accel...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-004-2178-5
更新日期:2005-06-01 00:00:00
abstract::The organisation of the human neuromuscular-skeletal system allows an extremely wide variety of actions to be performed, often with great dexterity. Adaptations associated with skill acquisition occur at all levels of the neuromuscular-skeletal system although all neural adaptations are inevitably constrained by the o...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-006-0547-y
更新日期:2006-11-01 00:00:00
abstract::The afternystagmus that occurs in the dark after gaze fixation during optokinetic stimulation is directed in the opposite direction relative to the previous optokinetic stimulus. The mechanism responsible for such afternystagmus after suppression of optokinetic nystagmus (ASOKN) is unclear. Several hypotheses have bee...
journal_title:Experimental brain research
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00221-014-3971-4
更新日期:2014-09-01 00:00:00
abstract::We recorded from 389 "reach" neurons (two monkeys) in the superior colliculus (SC) and underlying reticular formation (RF) or adjacent periaqueductal grey, whose activity was related to visually guided arm movements. Reach neurons were present from approximately 0.7 mm down to a depth of 6 mm below the surface of the ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/pl00005691
更新日期:1997-06-01 00:00:00
abstract::Proprioceptive input arising from torsional body movements elicits small reflexive eye movements. The functional relevance of these eye movements is still unknown so far. We evaluated their slow components as a function of stimulus frequency and velocity. The horizontal eye movements of seven adult subjects were recor...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s002210050418
更新日期:1998-06-01 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
pub_type: 杂志文章
doi:10.1007/BF00235318
更新日期:1985-01-01 00:00:00
abstract::The spatial and temporal coupling between the hands is known to be very robust during movements which use homologous muscles (in-phase or symmetric movements). In contrast, movements using nonhomologous muscles (antiphase or asymmetric movements) are less stable and exhibit a tendency to undergo a phase transition to ...
journal_title:Experimental brain research
pub_type: 临床试验,杂志文章
doi:10.1007/s00221-003-1496-3
更新日期:2003-08-01 00:00:00
abstract::Human observers are experts at visual face recognition due to specialized visual mechanisms for face processing that evolve with perceptual expertize. Such expertize has long been attributed to the use of configural processing, enabled by fast, parallel information encoding of the visual information in the face. Here ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-013-3463-y
更新日期:2013-05-01 00:00:00
abstract::We examined modulation of transmission in short-latency, distal hindlimb cutaneous reflex pathways during fictive locomotion in 19 decerebrate cats. Fictive stepping was produced either by electrical stimulation of the mesencephalic locomotor region (MLR) or by administration of Nialamide and 1-DOPA to acutely spinali...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00250567
更新日期:1989-01-01 00:00:00