Abstract:
:This paper investigates how the efficiency and robustness of a skilled rhythmic task compete against each other in the control of a bimanual movement. Human subjects juggled a puck in 2D through impacts with two metallic arms, requiring rhythmic bimanual actuation. The arms kinematics were only constrained by the position, velocity and time of impacts while the rest of the trajectory did not influence the movement of the puck. In order to expose the task robustness, we manipulated the task context in two distinct manners: the task tempo was assigned at four different values (hence manipulating the time available to plan and execute each impact movement individually); and vision was withdrawn during half of the trials (hence reducing the sensory inflows). We show that when the tempo was fast, the actuation was rhythmic (no pause in the trajectory) while at slow tempo, the actuation was discrete (with pause intervals between individual movements). Moreover, the withdrawal of visual information encouraged the rhythmic behavior at the four tested tempi. The discrete versus rhythmic behavior give different answers to the efficiency/robustness trade-off: discrete movements result in energy efficient movements, while rhythmic movements impact the puck with negative acceleration, a property preserving robustness. Moreover, we report that in all conditions the impact velocity of the arms was negatively correlated with the energy of the puck. This correlation tended to stabilize the task and was influenced by vision, revealing again different control strategies. In conclusion, this task involves different modes of control that balance efficiency and robustness, depending on the context.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Ronsse R,Thonnard JL,Lefèvre P,Sepulchre Rdoi
10.1007/s00221-008-1297-9subject
Has Abstractpub_date
2008-05-01 00:00:00pages
193-205issue
2eissn
0014-4819issn
1432-1106journal_volume
187pub_type
杂志文章abstract::3,4-Methylene-dioxy-N-methylamphetamine (MDMA, 'ecstasy') has a broad spectrum of molecular targets in the brain, among them receptors and transporters of the serotonergic (5-hydroxytryptamine, 5-HT) and noradrenergic systems. Its action on the serotonergic system modulates motor systems in rodents and humans. Althoug...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-014-4095-6
更新日期:2015-01-01 00:00:00
abstract::Many neurons in the deeper layers of the superior colliculus (SC) respond to multiple sensory inputs--visual, auditory, and somatic--as well as provide signals essential for saccadic eye movements to targets in different modalities. When the eyes and pinnae are in primary position, the neural map of auditory space is ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00231709
更新日期:1995-01-01 00:00:00
abstract::It is an important issue to address the mode of information processing in the somatic motor circuit linking the frontal cortex and the basal ganglia. In the present study, we investigated the extent to which corticostriatal input zones from the primary motor cortex (MI), the supplementary motor area (SMA), and the pre...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s002210050384
更新日期:1998-05-01 00:00:00
abstract::Studies of movement-related cortical potentials (MRCPs) for simple movements have shown a slowly rising negativity (Bereitschaftspotential, or BP) about 2 s prior to movement onset, centered in the bilateral sensorimotor area. However, complex movements may elicit a different temporal and spatial distribution of this ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-005-2314-x
更新日期:2005-06-01 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::The effect of claustrum (CL) stimulation on the spontaneous unitary activity of ipsi and contralateral frontal oculomotor neurons, was studied in chloralose-anaesthetized cats. A total of 205 units was bilaterally recorded in the medial oculomotor area, homologous of the primate "frontal eye fields"; 127 neurons were ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00230958
更新日期:1991-01-01 00:00:00
abstract::In the present study, the sensitivity to sinusoidal linear accelerations in the plane of the utricular macula was tested in afferents. The head orientation relative to the translation axis was varied in order to determine the head position that elicited the maximal and minimal responses for each afferent. The response...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s002210050219
更新日期:1997-11-01 00:00:00
abstract::The aim of the study was to define the spike threshold changes in motoneurons during naturally evoked activation. Spike activity was evoked in the gastrocnemius-soleus motoneurons of decerebrate cats by controlled stretches of the homonymous muscles. The spike thresholds were defined by using the first derivative of t...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-010-2285-4
更新日期:2010-06-01 00:00:00
abstract::It is a common experience, immediately after the removal of a cast or a splint, to feel motor awkwardness, which is usually attributed to muscular and joint immobilization. However, the same feeling may also be perceived after a brief period of immobilization. We provide evidence that this last effect stems from chang...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-012-3115-7
更新日期:2012-07-01 00:00:00
abstract::Sensory experience during perinatal life and adulthood modifies physiological and anatomical characteristics of the central nervous system. So far, this phenomenon has been studied in situations of complete or partial sensory deprivation. We here report that increased sensory stimulation, during four days, of a number...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00230256
更新日期:1989-01-01 00:00:00
abstract::Pineal glands were collected from superior cervical ganglionectomized (SCGX) and sham-treated rats at time intervals following surgical manipulation. Pineal noradrenaline (NA) levels were quantitated by a radioisotopic-enzyme technique, or the pineals were examined by histofluorescence or electron microscopic techniqu...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00238713
更新日期:1978-07-14 00:00:00
abstract::Patients with Parkinson's disease (PD) commonly exhibit difficulties performing simultaneous tasks and levodopa has been shown to improve the performance of these movements to a greater extent than movements performed in isolation. The aim of this study was to compare the effects of acute unilateral pallidal lesions (...
journal_title:Experimental brain research
pub_type: 临床试验,杂志文章
doi:10.1007/s00221-002-1257-8
更新日期:2002-12-01 00:00:00
abstract::The acquisition of co-ordination between posture and movement was investigated in human subjects performing a load lifting task. Sitting subjects held their left (postural) forearm in a horizontal position while supporting a 1 kg load via an electromagnet. Perturbation of the postural forearm position consisted of the...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00274991
更新日期:1989-01-01 00:00:00
abstract::Previous work has indicated that people do not use their judgment of a target's speed to determine where to hit it. Instead, they use their judgment of the target's changing position and an expected speed (based on the speed of previous targets). In the present study we investigate whether people also ignore the targe...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-003-1556-8
更新日期:2003-10-01 00:00:00
abstract::The brain noradrenaline (NA) system is known to modulate ischemic neuronal damage, and the turnover of NA has been suggested to increase in the early recovery period following cerebral ischemia. Using HPLC and gas chromatography-mass spectrometry we analyzed the tissue levels of NA and its metabolites, 3,4-dihydroxyph...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00230938
更新日期:1992-01-01 00:00:00
abstract::We investigated anatomical and physiological properties of the projection from the pretectal nuclear complex (PNC) to the ipsilateral lateral posterior-pulvinar complex in the cat. After Phaseolus vulgaris leucoagglutinin injections into the PNC, the majority (70%) of anterogradely labeled terminals was localized in t...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s002210100738
更新日期:2001-06-01 00:00:00
abstract::The flexion reflex modulation pattern was investigated in nine people with a chronic spinal cord injury during stepping using body weight support on a treadmill and manual assistance by therapists. Body weight support was provided by an upper body harness and was adjusted for each subject to promote the best stepping ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-009-1854-x
更新日期:2009-07-01 00:00:00
abstract::The main aim of the present study was to explore, by means of high-density EEG, the intensity and the temporal pattern of event-related sensory-motor alpha desynchronization (ERD) during the observation of different types of hand motor acts and gestures. In particular, we aimed to investigate whether the sensory-motor...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-010-2371-7
更新日期:2010-09-01 00:00:00
abstract::The present study was conducted to visualize the ultrastructural features of vestibular efferent boutons in the oyster toadfish, Opsanus tau. The crista ampullaris of the horizontal semicircular canal was processed for and examined by routine transmission electron microscopy. The results demonstrate that such boutons ...
journal_title:Experimental brain research
pub_type: 更正并重新发布的文章,杂志文章
doi:10.1007/s00221-004-1898-x
更新日期:2004-07-01 00:00:00
abstract::The luminance detectors in the olivary pretectal nucleus, which are likely candidates mediating the pupillary light reflex, responded to all frequencies of sinusoidally modulated light up to 12-25 Hz. At low frequencies (0.05-4.0 Hz) the luminance detectors responded with modulated firing to different stimulation rate...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00237669
更新日期:1985-01-01 00:00:00
abstract::Electron microscopic examination of the monkey lateral geniculate nucleus, pars dorsalis (LGNd) reveals the occurrence of synaptic contacts between profiles belonging to interneurons (I-cells). Almost all combinations are observed, namely, axodendritic, dendrodendritic, dendrosomatic and somatodendritic, the most freq...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00237322
更新日期:1976-05-10 00:00:00
abstract::The ability of Huntington's disease patients to co-ordinate their two hands with and without external cueing was investigated. Twelve Huntington's disease patients and sex- and age-matched controls performed a bimanual cranking task at two speeds (0.5 Hz, 1.5 Hz) and phase relationships (in-phase, anti-phase), with an...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s002210000485
更新日期:2000-10-01 00:00:00
abstract::It is known that attending to a cutaneous stimulus briefly increases its subjective intensity. The purpose of the present study was to determine whether an extended period of attention would produce a longer-lasting perceptual amplification. Eighty subjects were assigned alternately to experimental and control groups....
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-020-05910-y
更新日期:2020-11-05 00:00:00
abstract::The distribution of S1 (first somatosensory area) and S2 (second somatosensory area) neurons projecting to the contralateral S2 was studied with horseradish peroxidase in normal adult cats and in cats aged between 129 and 248 days in which the injected S2 area had been deprived of some of its input by an earlier lesio...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00235729
更新日期:1981-01-01 00:00:00
abstract::Visual stimulation alone is sufficient to produce visually induced postural reactivity (VIPR). While some studies have shown that VIPR increases with the velocity of a moving visual stimulus, others have shown that it decreases with the temporal frequency of an oscillating visual stimulus. These results seem contradic...
journal_title:Experimental brain research
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00221-013-3592-3
更新日期:2013-08-01 00:00:00
abstract::The development of the ability to integrate postural adjustments into the gait initiation process was investigated in children, using both kinematic and electromyographic (EMG) analysis. Subjects included children of 1 year of age (1-4 months' walking experience), 2-3 years of age (9-17 months' walking experience), 4-...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-002-1044-6
更新日期:2002-06-01 00:00:00
abstract::The cerebrovascular consequences of the gentle restraint commonly used for the measurement of local cerebral blood flow (LCBF) in conscious rats has been tested by using two drugs, propranolol and diazepam. Propranolol induced small LCBF decreases in 7 structures suggesting that the cerebral circulation was partially ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00235660
更新日期:1986-01-01 00:00:00
abstract::Saccade characteristics in response to moving and stationary targets were studied in three monkeys (Macaca mulatta) that had been trained to look at a target, which after an initial jump either remained in place or moved forward or backward with constant velocity (10 degrees /s). Eye movements were recorded using a se...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-004-2070-3
更新日期:2005-02-01 00:00:00
abstract::Using a declarative memory paradigm, the anatomical correlates of spatial location encoding and retrieval in the healthy human brain as reflected by BOLD fMRI were investigated. During encoding, subjects were instructed to view and keep in mind different locations of an object on a platform seen from different viewpoi...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-006-0408-8
更新日期:2006-09-01 00:00:00
abstract::The effects of learning on strategy selection in the context of action imitation have been investigated in two experiments conducted with healthy individuals. It was predicted that, once learnt, meaningless actions are processed by the cognitive system as meaningful and this new representational status might influence...
journal_title:Experimental brain research
pub_type: 临床试验,杂志文章
doi:10.1007/s00221-006-0395-9
更新日期:2006-08-01 00:00:00