Abstract：
:We determined whether uncertainty about the location of one's hand in virtual environments limits the efficacy of online control processes. In the Non-aligned and Aligned conditions, the participant's hand was represented by a cursor on a vertical or horizontal display, respectively. In the Natural condition, participants saw their hand. During an acquisition phase, visual feedback was either permitted or not during movement execution. To test the hypothesis (Norris et al. 2001) that reliance on visual feedback increases as the task becomes less natural (Natural < Aligned < Non-aligned), following acquisition, participants performed a transfer phase without visual feedback. During acquisition in both visual feedback conditions, movement endpoint variability increased as the task became less natural. This suggests that the orientation of the display and the representation of one's hand by a cursor introduced uncertainty about its location, which limits the efficacy of online control processes. In contradiction with the hypothesis of Norris et al. (2001), withdrawing visual feedback in transfer had a larger deleterious effect on movement accuracy as the task became less natural. This suggests that the CNS increases the weight attributed to the input that can be processed without first having to be transformed.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Veilleux LN,Proteau Ldoi
10.1007/s00221-010-2487-9subject
Has Abstractpub_date
2011-02-01 00:00:00pages
345-58issue
3eissn
0014-4819issn
1432-1106journal_volume
208pub_type
杂志文章abstract：:Although the perception of emotion in individuals is an important social skill, very little is known about how emotion is determined from a crowd of individuals. We investigated the perception of emotion in scenes of crowds populated by dynamic characters each expressing an emotion. Facial expressions were masked in t...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-009-2037-5
更新日期：2010-07-01 00:00:00
abstract：:Stimulus-response compatibility (SRC) effects are classified depending on the way that the elements of the stimulus and response sets interact, influencing both the speed and accuracy of the motor response. This is particularly important for social stimuli, such as hands. However, the stimuli used in most SRC studies ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-015-4283-z
更新日期：2015-07-01 00:00:00
abstract：:The mechanisms by which the nervous system coordinates multiple muscles for the control of finger movements are not well understood. One possibility is that groups of muscles may be enlisted into synergies by last-order inputs that project across multiple motor nuclei. In this study we investigated the role that tacti...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-006-0643-z
更新日期：2006-10-01 00:00:00
abstract：:Seizure susceptibility waxes and wanes in an apparently circadian manner in many epileptic patients. Fluctuations of melatonin concentration with highest levels during the night and lowest levels in the early morning could be involved in this phenomenon. Therefore, the action of melatonin on epileptic activity was tes...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00230052
更新日期：1995-01-01 00:00:00
abstract：:The effects of left and right alignment on the Ebbinghaus illusion were investigated in three experiments. In Experiment 1, the Ebbinghaus illusion was presented on the left or right side, and the points of subjective equality (PSE) were measured. Only the central disk of the figure with small inducers was perceived l...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-018-5168-8
更新日期：2018-04-01 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：:The gap effect refers to the finding that saccadic latencies are typically reduced when a fixation point is removed prior to the appearance of a peripheral target. This reduction in saccadic reaction time (SacRT) is thought to be due to a general warning effect and an oculomotor specific fixation offset that occur whe...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002219900243
更新日期：2000-01-01 00:00:00
abstract：:There is still controversy in the literature whether a single episode of mild traumatic brain injury (MTBI) results in short-term functional and/or structural deficits as well as any induced long-term residual effects. With the inability of traditional structural brain imaging techniques to accurately diagnosis MTBI, ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-010-2294-3
更新日期：2010-07-01 00:00:00
abstract：:A wealth of evidence implicates the crossed descending projection from the superior colliculus (SC) in orientation and approach behaviours directed towards novel, non-noxious stimuli. In our preceding paper, we identified a population of nociceptive neurones in the rat SC that have axons that project to the contralate...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00231781
更新日期：1996-05-01 00:00:00
abstract：:Previous research has shown that Parkinson's-disease (PD) patients produce irregular movement paths during a rapid arm pointing task. The aim of this study was to investigate the movement paths of PD patients during a prehensile action to objects requiring different levels of precision. Thus, we sought to determine if...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210000468
更新日期：2000-10-01 00:00:00
abstract：:Attention to sensory stimulation modulates behavioural responses and cortical activity. Attention to movement can also modulate motor responses. For example, directing attention away from cued movements can increase reaction times. This study used fMRI to determine where in the motor cortex attention to movement modul...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-001-0905-8
更新日期：2002-01-01 00:00:00
abstract：:Human orientation in novel and familiar environments is a complex skill that can involve numerous different strategies. To date, a comprehensive account of how these strategies interrelate at the behavioural level has not been documented, impeding the development of elaborate systems neuroscience models of spatial ori...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-012-3316-0
更新日期：2013-02-01 00:00:00
abstract：:The neural activity in area 7a and the arm area of motor cortex was recorded while real or path-guided apparent motion stimuli were presented to behaving monkeys in the absence of a motor response. A smooth stimulus motion was produced in the real motion condition, whereas in the apparent motion condition five stimuli...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-003-1664-5
更新日期：2004-02-01 00:00:00
abstract：:We investigated the effect of spatial uncertainty on motor planning by using the cueing method in a reaching task (experiment 1). Discrete spatial cues indicated the different locations in which the target could be presented. The number of cues as well as their direction changed from trial to trial. We tested the adeq...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-003-1453-1
更新日期：2003-06-01 00:00:00
abstract：:We studied the development of information-movement couplings in a ball-bouncing task with a special interest in how space- and time-related information is used by people of different ages. Participants from four age groups (children aged 7-8, 9-10 and 11-12 years, and adults) performed a virtual ball-bouncing task in ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-015-4443-1
更新日期：2016-01-01 00:00:00
abstract：:Immunohistochemical double staining for gonadotropin releasing hormone (GnRH) and tyrosine hydroxylase (TH) or glutamic acid decarboxylase (GAD) reveals in the septo-preoptic-diagonal band complex of the rat brain close spatial associations between GnRH-immunoreactive perikarya and TH and GAD immunoreactive fibers. In...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00238235
更新日期：1983-01-01 00:00:00
abstract：:Vision can improve bipedal upright stability during standing and locomotion. However, during locomotion, vision supports additional behaviors such as gait cycle modulation, navigation, and obstacle avoidance. Here, we investigate how the multiple roles of vision are reflected in the dynamics of trunk control as the ne...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-010-2414-0
更新日期：2010-10-01 00:00:00
abstract：:By measuring the forces applied by each limb supporting the weight of the standing quadruped (cat), before and during elicitation of the placing reaction, it was possible to examine quantitatively and qualitatively the postural events which preceded and accompanied forelimb displacement. The findings are summarized as...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00237713
更新日期：1979-10-01 00:00:00
abstract：:A wealth of evidence describes the strong positive impact that reward has on motor control at the behavioural level. However, surprisingly little is known regarding the neural mechanisms which underpin these effects, beyond a reliance on the dopaminergic system. In recent work, we developed a task that enabled the dis...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-020-05802-1
更新日期：2020-08-01 00:00:00
abstract：:According to the peak and decline model divergent thinking declines at a specific age (in or after middle age). However, if divergent thinking declines steadily in aging still has to be clarified. In order to explore the age-related changes in verbal and visual divergent thinking, in the present study a sample of 159 ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-016-4857-4
更新日期：2017-04-01 00:00:00
abstract：:Survivin attenuates apoptosis by inhibiting cleavage of some cell proteins by activated caspase-3. We recently discovered strong up-regulation of survivin, primarily in astrocytes and a sub-set of neurons, after traumatic brain injury (TBI) in rats. In this study we characterized co-expression of survivin with activat...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-005-2362-2
更新日期：2005-11-01 00:00:00
abstract：:The cerebral response evoked by stimulation of the bulbar pyramidal tract in wood rats, like that of laboratory rats, consisted of a small alpha wave, almost obscured by a very large, superimposed r wave. The alpha wave behaved like a purely antidromic response, whereas the r wave behaved like a postsynaptic response,...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00228700
更新日期：1993-01-01 00:00:00
abstract：:In walking cats decerebrated at the premammillary level, single neurone activity of Purkinje cells (P-cells) with long corticofugal axons was recorded in the cerebellar vermis. The P-cells (N = 145) were identified as they showed spontaneous simple and complex spikes and also antidromic activation from Deiters' nucleu...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00238886
更新日期：1981-01-01 00:00:00
abstract：:Vigilance is the ability to sustain attention to information for prolonged periods of time, particularly in environments where critical signals may be rare. Recent research in the domain of mind-wandering has suggested that processes associated with mind-wandering may underpin the typical decline in vigilance task per...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-018-5438-5
更新日期：2019-02-01 00:00:00
abstract：:In order to study prehension in a reproducible manner, we trained monkeys to perform a task in which rectangular, spherical, and cylindrical objects were grasped, lifted, held, and lowered in response to visual cues. The animal's hand movements were monitored using digital video, together with simultaneously recorded ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210050803
更新日期：1999-08-01 00:00:00
abstract：:Little is known about anticipatory postural adjustments (APAs) developing when body segments of tiny mass are moved. Thus, APAs in the human upper-limb were investigated during a gentle and small index finger tap (35 mm stroke in 50 ms). This task was fulfilled by ten subjects either with prone or supine hand. EMG was...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-008-1668-2
更新日期：2009-03-01 00:00:00
abstract：:In sensory saltation, first reported by Geldard and Sherrick (Science 178:178-179, 1972), a stimulus is displaced towards a second one following closely in time and space as a function of the delay between the stimuli. The distance between stimulus locations is restricted by the extension of sensory fields in the prim...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-005-0190-z
更新日期：2006-03-01 00:00:00
abstract：:Several non-physiological stimuli (i.e. pharmacological or electrical stimuli) have been shown to induce Fos expression in striatal neurons. In this work, striatal Fos (i.e. Fos-like) expression was studied after physiological stimulation, i.e. motor activity (treadmill running at 36 m/min for 20 min). In rats killed ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/pl00005715
更新日期：1997-07-01 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
abstract：:The relationship between phantom limb phenomena and cortical reorganization was examined in five subjects with congenital absence of an upper limb and nine traumatic amputees. Neuromagnetic source imaging revealed minimal reorganization of primary somatosensory cortex in the congenital amputees (M=0.69 cm, SD 0.24) an...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210050334
更新日期：1998-03-01 00:00:00
