Abstract：
:This study addresses the question as to the nature of the information on which the preactivation of the appropriate muscles in the grasping of the ball in a one-handed catching task is initiated and coordinated. High speed film and electromyograms were recorded while experiences subjects (N = 4) caught balls--projected towards them by a ball-machine at different speeds (11.9, 13.9 and 16.2 m/s--resulting in significantly different flight times of 508, 443 and 355 ms, respectively). Tau-margins (times to contact) values were calculated at the time of the initiation of the grasp movement for each subject at each speed. No significant differences were found between tau-margins at different speeds. Further, the onset of the muscle activity for the initiation of the grasp movement was shown to be independent of ball speed. These findings lend support to the contention that the initiation of the grasp movement in catching is controlled and coordinated by the optical variable tau which specifies (directly) this time-to-contact. Given that the muscle group selected includes both flexors and extensors, co-activation on the basis of tau information is evidenced.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Savelsbergh GJ,Whiting HT,Burden AM,Bartlett RMdoi
10.1007/BF00229019keywords:
subject
Has Abstractpub_date
1992-01-01 00:00:00pages
223-8issue
1eissn
0014-4819issn
1432-1106journal_volume
89pub_type
杂志文章abstract：:In a previous study of the heat grill illusion, sensations of burning and stinging were sometimes reported when the skin was cooled by as little as 2 degrees C. Informal tests subsequently indicated that these nociceptive sensations were experienced if cooling occurred when the stimulating thermode rested on the skin,...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-002-1280-9
更新日期：2003-02-01 00:00:00
abstract：:The integrity of the paramedian pontine reticular formation (PPRF) is necessary for the generation of rapid eye movements. The main saccade-related population is of the burst type with latencies between 0 and 40 ms preceding a saccade, and they can be divided into medium- and long-lead burst neurons. Burst neurons hav...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00237155
更新日期：1983-01-01 00:00:00
abstract：:Extracellular recordings of neuronal activity made in the lumbosacral spinal segments of the anesthetized cat have disclosed the existence of a set of neurons in Rexed's laminae III-VI that discharged in a highly synchronized manner during the occurrence of spontaneous negative cord dorsum potentials (nCDPs) and respo...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-002-1303-6
更新日期：2003-02-01 00:00:00
abstract：:The fate of monoclonal anti-vasopressin antibodies (VP-MAbs) injected in vivo into the paraventricular nucleus (PVN) of the rat brain was studied by immunocytochemistry. Depending on the post survival time, VP-MAbs contained in an ascites fluid were stained at different levels of the VP neurons: the cytoplasm of the P...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00235986
更新日期：1987-01-01 00:00:00
abstract：:In the frog's isolated head preparations, spontaneous activity was recorded from the whole nerve of the left horizontal semicircular canal (HC) for 6 min before and 16 min after destruction of the right labyrinth by heating or administration of d-tubocurarine (0.5 microliter, 5.10(-6)M) into the perilymph of the right...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00235790
更新日期：1982-01-01 00:00:00
abstract：:Previous investigations have suggested that the dorsolateral pontine tegmentum (DLP) may be part of a system essential for classical conditioning of the nictitating membrane response. The present study examined CR-related firing patterns of extracellularly-recorded single units in the DLP. Differential conditioning, u...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00243830
更新日期：1986-01-01 00:00:00
abstract：:People are good at telling the direction of a moving tactile stimulus and this capacity provides a sensitive clinical test of somatosensory disturbances. Tactile directional sensitivity depends on two different kinds of somatosensory information, i.e. spatiotemporal information and information about friction-induced c...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-005-2343-5
更新日期：2005-10-01 00:00:00
abstract：:The saccadic system has been traditionally regarded as two-dimensional (horizontal, vertical) and basically conjugate in the two eyes. However, saccades to disparate targets (e.g., targets in real three-dimensional space that are located in different directions and at different distances) are naturally disconjugate. W...
journal_title：Experimental brain research
pub_type： 临床试验,杂志文章
doi：10.1007/s002210050529
更新日期：1998-10-01 00:00:00
abstract：:Linear and angular control of trunk and leg motion during curvilinear navigation was investigated in subjects with cerebellar ataxia and age-matched control subjects. Subjects walked with eyes open around a 1.2-m circle. The relationship of linear to angular motion was quantified by determining the ratios of trunk lin...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-012-3074-z
更新日期：2012-05-01 00:00:00
abstract：:Evidence suggests that Parkinson's disease (PD) patients produce large spatial errors when reaching to proprioceptively defined targets. Here, we examined whether these movement inaccuracies result mainly from impaired use of proprioceptive inputs for movement planning mechanisms or from on-line movement guidance. Med...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-015-4343-4
更新日期：2015-09-01 00:00:00
abstract：:Reactive responses to balance perturbations have been shown to be improved by training. This investigation aimed to compare the effects of block and random training perturbation schedules on stability gains of compensatory arm and leg movements in response to unpredictable large-magnitude balance perturbations. Pertur...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-020-05806-x
更新日期：2020-05-01 00:00:00
abstract：:Extracellular Ca2+ activity (aCa) changes were measured with Ca2+-sensitive microelectrodes in the cat cerebral cortex during iontophoretic administration of excitatory and inhibitory aminoacids. Glutamate, aspartate and DL homcysteate usually decreased aCa from a baseline of 1.3 mM to as low as 0.1 mM. The amplitude ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00237788
更新日期：1980-01-01 00:00:00
abstract：:In general, social neuroscience research tends to focus on visual and auditory channels as routes for social information. However, because the skin is the site of events and processes crucial to the way we think about, feel about, and interact with one another, touch can mediate social perceptions in various ways. Thi...
journal_title：Experimental brain research
pub_type： 杂志文章,评审
doi：10.1007/s00221-009-2007-y
更新日期：2010-07-01 00:00:00
abstract：:We investigated the extent to which humans can quickly adapt their goal-directed arm movements to perturbed feedback. We predicted that the magnitude of adaptation to a changed relationship between vision and kinesthesia would depend on the type of perturbation, being largest when the perturbation can be generalized w...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-002-1321-4
更新日期：2003-02-01 00:00:00
abstract：:The thalamic projections to the cortical area surrounding the anterior (ASs) and middle (MSs) suprasylvian sulci in the cat were studied using horseradish peroxidase histochemistry. The medial MSs area (medial wall of the MsS) receives thalamic afferents from the pulvinar-lateralis posterior (Pul-LP) complex, posterio...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00235763
更新日期：1982-01-01 00:00:00
abstract：:To investigate the topographic organization of nociceptive neurons in the caudal medullary reticular formation, the distribution of cells that exhibit c-fos expression was examined following a unilateral noxious facial stimulus: subcutaneous injection of formalin into the vibrissal pad of awake rats. Labelling for Fos...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00228014
更新日期：1995-01-01 00:00:00
abstract：:Visual input has a profound effect on the development of binocular maps in the tectum of the frog Xenopus laevis. Input from the ipsilateral eye, which is relayed to the tectum via the opposite nucleus isthmi, is normally in register with the retinotectal map from the contralateral eye. However, if one eye is rotated ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00608243
更新日期：1990-01-01 00:00:00
abstract：:This study investigated the modulation of somatosensory evoked potentials (SEPs) during precisely controlled force generation and force relaxation in a visuomotor tracking task. Subjects were instructed to track a target line with a line that represented their own force generated by grip movement with the right hand a...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-012-3082-z
更新日期：2012-06-01 00:00:00
abstract：:The properties of the retinal ganglion cell classes in the cuban treefrog Hyla septentrionalis were studied qualitatively and quantitatively. In the superficial layers of the optic tectum three main classes of afferent optic nerve fibers could be distinguished, class-1*, class-3 and class-4 neurons. Hyla displays a mo...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00279659
更新日期：1988-01-01 00:00:00
abstract：:Two components of long-term potentiation (LTP) are distinguished with extracellular recording electrodes: a synaptic and an EPSP-Spike (E-S) component. The latter consists of the enhancement produced in the population spike amplitude in excess of that predicted by EPSP potentiation alone. The experiments carried out i...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00229331
更新日期：1990-01-01 00:00:00
abstract：:The pattern of gamma-efferent innervation of the muscle spindle was investigated in the peroneus tertius muscle of the cat. A number of spindle group Ia afferents were isolated and monitored during tetanic stimulation of isolated gamma-axons. The sample was dominated by efferents producing a static fusimotor effect on...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00236812
更新日期：1983-01-01 00:00:00
abstract：:Efferents originating from the rat medial prefrontal cortex and projecting to diencephalic and mesencephalic structures were analyzed electrophysiologically. The antidromic activation technique was used in order to identify cortical neurons which innervate the medio-dorsal nucleus of the thalamus (MD), lateral habenul...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00239191
更新日期：1983-01-01 00:00:00
abstract：:This study explored the directional specificity of fear of falling (FoF) effects on the stabilizing function of anticipatory postural adjustments (APA). Participants (N = 71) performed a series of lateral leg raises from an elevated surface in three conditions: in the "Control condition", participants stood at the mid...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-015-4471-x
更新日期：2016-03-01 00:00:00
abstract：:Aiming movements of the upper limbs can be classified either as discrete, or reciprocal, or cyclic. The control of these movements after a stroke can be affected. The aim of this experimental, cross-sectional study was to characterize the performance of these movements after the right and left hemisphere chronic strok...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-020-05897-6
更新日期：2020-10-01 00:00:00
abstract：:Efficient daily navigation is underpinned by path integration, the mechanism by which we use self-movement information to update our position in space. This process is well understood in adulthood, but there has been relatively little study of path integration in childhood, leading to an underrepresentation in account...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-013-3709-8
更新日期：2013-12-01 00:00:00
abstract：:Automatic attentional capture by a salient distractor can be prevented by spatial attentional control settings (ACSs) (e.g., Yantis and Jonides in J Exp Psychol Hum Percept Perform 16:121-134, 1990). Earlier, converging evidence for a spatial ACS (Eason et al. 1969) was found in event-related potentials (ERPs). In the...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-012-3279-1
更新日期：2012-12-01 00:00:00
abstract：:We have developed a tri-axial model of spatial orientation applicable to static 1g and non-1g environments. The model attempts to capture the mechanics of otolith organ transduction of static linear forces and the perceptual computations performed on these sensor signals to yield subjective orientation of the vertical...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-006-0387-9
更新日期：2006-08-01 00:00:00
abstract：:We use a vibrotactile-delayed match-to-sample paradigm to evaluate the effects of interference on working memory. One of the suggested mechanisms through which interference affects performance in working memory is feature overwriting: Short-term representations are maintained in a finite set of feature units (such as ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-010-2501-2
更新日期：2011-02-01 00:00:00
abstract：:Stellate cells within the ventral cochlear nucleus (VCN) are a diverse cell group that have been classified according to their size and morphology. Some of these stellate cell types constitute major projection neurones into the brainstem and directly into the inferior colliculus, while others are implicated in more lo...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-003-1602-6
更新日期：2003-12-01 00:00:00
abstract：:Humans show a gravitational advantage in perception: we are more precise at judging the speed of downwards-moving than upwards-moving objects, indicating that gravitational acceleration is an internalised prior. However, it is unclear whether this gravity prior is based on purely perceptual cues or whether it can inco...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-020-05852-5
更新日期：2020-09-01 00:00:00
