Abstract：
:A series of step-tracking experiments was conducted before, during, and after a 3-week space mission to assess the effects of prolonged microgravity on a non-postural motor-control task. In- and post-flight accuracy was affected only marginally. However, kinematic analyses revealed a considerable change in the underlying movement dynamics: too-small force and, thus, too-low velocity in the first part of the movements was mainly compensated by lengthening the deceleration phase of the primary movement, so that accuracy was regained at its end. The observed in-flight decrements in peak velocity and peak acceleration point to an underestimation of mass, in agreement with the re-interpretation hypothesis of Bock et. al. Post-flight no reversals of the in-flight changes (negative aftereffects) were found. Instead, there was a general slowing down, which could be due to post-flight physical exhaustion.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Sangals J,Heuer H,Manzey D,Lorenz Bdoi
10.1007/s002210050906keywords:
subject
Has Abstractpub_date
1999-12-01 00:00:00pages
378-90issue
3eissn
0014-4819issn
1432-1106pii
91290378.221journal_volume
129pub_type
杂志文章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：:Emotional processing that occurs partially in advance of perceptual processing is known as pre-perceptual emotional processing. The facilitation of sensory processing due to pre-perceptual emotional processing can be observed in visual search and attentional blink tasks. However, previous event-related potential studi...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-015-4486-3
更新日期：2016-02-01 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：:This study documents a bilateral projection from nucleus reticularis tegmenti pontis (NRTP) to the rostral aspect of the medial vestibular nucleus (MVN) in rabbits. Horseradish peroxidase injections in rostral MVN produced retrogradely labeled neurons in the caudal half of NRTP; caudal MVN injections produced negative...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00237207
更新日期：1983-01-01 00:00:00
abstract：:Arm motor performance of eight Cebus monkeys was examined during reversible cooling in the ventral lateral region of the putamen and globus pallidus (primarily the external segment), where neurons discharging during arm movements have been found (DeLong 1972). When attempting to hold a handle stationary during basal g...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00237552
更新日期：1980-01-01 00:00:00
abstract：:Movement sequences such as typing or tapping display important interactions among finger movements arising from anticipatory motion (preparing for upcoming events) and coupling (non-independence among fingers). We examined pianists' finger tapping for the influence of cognitive chunking processes and biomechanical cou...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-006-0760-8
更新日期：2007-04-01 00:00:00
abstract：:Microinjections of D,L homocysteic acid (DLH, 40 nmoles) made in the lateral PAG of the unanesthetized and paralyzed decerebrate cat evoked distinct patterns of extracranial and hindlimb blood flow. One pattern, evoked from the pretentorial part of the lateral PAG (A3.3-A2.5), consisted of an extracranial vasodilation...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00230972
更新日期：1991-01-01 00:00:00
abstract：:The simultaneous presentation of a visual and an auditory stimulus can lead to a decrease in people's ability to perceive or respond to the auditory stimulus. In this study, we investigate the effect that threat has upon this phenomenon, known as the Colavita visual dominance effect. Participants performed two blocks ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-008-1608-1
更新日期：2009-02-01 00:00:00
abstract：:To understand spatiotemporally coordinated activity in neural networks and interaction between different areas or layers in brain tissue, simultaneous multisite recording is a prerequisite. For in vitro studies pursuing these goals, substrate integrated, planar microelectrode arrays (MEAs) have been developed to monit...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-001-0932-5
更新日期：2002-01-01 00:00:00
abstract：:The firing patterns of single raphe units at the posterior midbrain level were examined in chloralosed rats to assess the effects of cerebellar stimulation and/or harmaline administration. Raphe cells were grouped according to their spontaneous firing rate and other characteristics into two categories. From a total sa...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00237211
更新日期：1982-01-01 00:00:00
abstract：:It has been argued that through a process of internal 'simulation', we automatically map observed actions directly onto our motor system to facilitate imitation. Instead, here we show that observed actions influence the kinematic parameters of manual responses in a dynamic, context-dependent fashion. Participants obse...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-009-2089-6
更新日期：2010-04-01 00:00:00
abstract：:The purpose of this study was to compare the asymmetric gait induced by unilateral spinal cord injury in chicks with asymmetric gaits of other bipeds and quadrupeds. After lateral hemisection of the left thoracic spinal cord, kinetic (ground reaction forces) and kinematic (distance and timing) data were recorded as ch...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210050515
更新日期：1998-10-01 00:00:00
abstract：:The major mammalian subcortical visual structures receive topographically ordered projections from both eyes. In the adult dorsal lateral geniculate nucleus (dLGN) each projection terminates in separate restricted regions of the nucleus. This pattern is different during development. Initially in ferrets the projection...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00231260
更新日期：1990-01-01 00:00:00
abstract：:The aim of this study was to examine how adults processed common fractions with common numerators under two distinct conditions. Whereas participants were presented with only common fractions in a "simple" condition, a "complex" condition involved the random presentation of common fractions as well as decimal fraction...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-011-2969-4
更新日期：2012-03-01 00:00:00
abstract：:The spatial properties of human binocular mechanisms were investigated using the technique of subthreshold summation. Isolation of binocular mechanisms was achieved by means of interocular stimulus presentation. The contrast detection threshold for a sinusoidal test grating viewed by one eye was found to be reduced by...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00237700
更新日期：1977-02-16 00:00:00
abstract：:Previous studies have found that affective states with high motivational intensity narrow attentional scope, whereas affective states with low motivational intensity broaden attentional scope. This conclusion, however, is based on fragmented evidence based on several separate studies. The present study tests this conc...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-014-4014-x
更新日期：2014-10-01 00:00:00
abstract：:As a functional measure of NMDA receptor effectiveness in kitten striate cortex, the uptake of 45Ca by visual cortical slices was measured after 2 minute bath applications of N-methyl-D-aspartate (NMDA). Significant Ca uptake occurred in response to 12.5-100 microM NMDA in slices prepared from visual cortex of normal ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00228153
更新日期：1990-01-01 00:00:00
abstract：:Joint stiffness measurements during small transient perturbations have suggested that stiffness during movement is different from that observed during posture. These observations are problematic for theories like the classical equilibrium point hypothesis, which suggest that desired trajectories during movement are en...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210000598
更新日期：2001-02-01 00:00:00
abstract：:Pain serves to protect against bodily threat, and therefore initiates protective responses such as attending toward threat-relevant information. Since pain is often exacerbated by executing movements, these motor actions may serve as cues for pain. Up to date, however, pain-related attention during movement remains la...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-020-05790-2
更新日期：2020-05-01 00:00:00
abstract：:During transient, high-acceleration rotation, performance of the normal vestibulo-ocular reflex (VOR) depends on viewing distance. With near targets, gain (eye velocity/head velocity) enhancement is manifest almost immediately after ocular rotation begins. Later in the response, VOR gain depends on both head rotation ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002219900266
更新日期：2000-02-01 00:00:00
abstract：:The effects of an opioid receptor antagonist, naloxone (NAL), were studied on the changes in pituitary hormone secretion induced by emotional stress. Male Wistar rats were trained with tone stimuli paired with electric footshocks and tested with the tone and environmental cue signals for emotional stress of fear acqui...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00230100
更新日期：1990-01-01 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
pub_type： 杂志文章
doi：10.1007/BF02454147
更新日期：1997-01-01 00:00:00
abstract：:The effect of fatigue on finger force perception within a hand during ipsilateral finger force matching was examined. Thirteen subjects were instructed to match a reference force of an instructed finger using the same or different finger within the hand before and after index finger fatigue. Absolute reference force t...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-007-0978-0
更新日期：2007-09-01 00:00:00
abstract：:Stimulation of the caudal raphe nuclei alters visceral functions. The caudal raphe nuclei project to the nucleus of the solitary tract, which receives the central terminations of vagal afferents and plays an important role in the central integration of autonomic activities. The caudal raphe nuclei also project to the ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00241358
更新日期：1995-01-01 00:00:00
abstract：:Normally, gamma motoneurones innervate only the intrafusal fibres of muscle spindles. This is a report of sprouting of gamma motoneurones to innervate extrafusal muscle fibres following partial denervation of the soleus muscle of kittens. In eight newborn animals, the L7 ventral root was cut on one side under anaesthe...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00227250
更新日期：1992-01-01 00:00:00
abstract：:The size-weight illusion induced by visually perceived sizes was reexamined to investigate whether this illusion is a sensory based or cognitive-based phenomenon. A computer-augmented environment was utilized to manipulate visual size information of target objects independently of their haptic information. Two physica...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-006-0803-1
更新日期：2007-05-01 00:00:00
abstract：:The amyloid precursor protein (APP) is one of the key proteins in Alzheimer's disease (AD), as it is the precursor of amyloid β (Aβ) peptides accumulating in amyloid plaques. The processing of APP and the pathogenic features of especially Aβ oligomers have been analyzed in detail. Remarkably, there is accumulating evi...
journal_title：Experimental brain research
pub_type： 杂志文章,评审
doi：10.1007/s00221-011-2878-6
更新日期：2012-04-01 00:00:00
abstract：:We assessed the influence of vestibular stimulation by whole-body oscillation in the yaw plane on the cardiorespiratory responses after a change of posture from sitting to standing. Eighteen healthy subjects (21-70 years old) and six patients with bilateral vestibular loss (46-59 years old) were tested. For comparison...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-003-1422-8
更新日期：2003-06-01 00:00:00
abstract：:A force-matching task was used to study the influence of constraining tactile information from the hand on the perception of forces generated with the index finger flexors, the palmar prehensile grasp and with the elbow flexors. Subjects generated the same reference forces (2-10 N) with each muscle group and matched t...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-005-0259-8
更新日期：2006-01-01 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
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1007/BF00241503
更新日期：1995-01-01 00:00:00
