Abstract：
:Voluntary movements are preceded by a slow electrical potential of the brain (Bereitschafts-potential, BP) or readiness potential. The BP is accompanied by a magnetic field shift of similar time characteristics (Bereitschaftsmagnetfeld, BM). The BM preceding volitional right foot or toe movements was recorded from anterior, posterior, and lateral positions of the scalp using a SQUID (Superconducting Quantum Interference Device) third-order gradiometer. Controls were implemented to reduce head movements, which were simultaneously recorded with a mechanograph. The results showed that movements of the lower extremities are also preceded by a BM. However, contrary to finger movements, BMs with field lines directed into the head were found predominantly for foot movements and exclusively for toe movements. The BM preceding foot movements was maximum over a position 2 cm left of the vertex, i.e., contralateral to the movement. Two centimeters right of the vertex it was smaller, thus exhibiting a normal contralateral preponderance and not sharing the paradoxical side preponderance of the electrical BP preceding foot or toe movements. The BM preceding toe movements was only apparent at the vertex and was smaller than the one preceding foot movement. This may suggest a source that is located still deeper in the brain than with foot movements.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Deecke L,Boschert J,Weinberg H,Brickett Pdoi
10.1007/BF00237152subject
Has Abstractpub_date
1983-01-01 00:00:00pages
81-6issue
1eissn
0014-4819issn
1432-1106journal_volume
52pub_type
杂志文章abstract：:A model of global hypoxia during Caesarean-section (C-section) birth has been widely used to study long-term effects of birth hypoxia on central nervous system (CNS) function. However, the actual degree of CNS and systemic hypoxia produced by the birth insult in this model has never been characterised. Additionally, t...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002219900305
更新日期：2000-04-01 00:00:00
abstract：:Normal vision overrides perturbed vestibular information for the optimization of performance during goal directed locomotion, suggesting down-regulation of vestibular gain. However, it is not known if the responses to vestibular perturbation are accentuated when vision is impaired. Furthermore, both visual and vestibu...
journal_title：Experimental brain research
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00221-006-0593-5
更新日期：2007-01-01 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：: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
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journal_title：Experimental brain research
pub_type： 杂志文章,评审
doi：10.1007/s00221-011-2894-6
更新日期：2012-04-01 00:00:00
abstract：:Transcranial direct current stimulation (TDCS) is a non-invasive form of brain stimulation applied via a weak electrical current passed between electrodes on the scalp. In recent studies, TDCS has been shown to improve learning when applied to the prefrontal cortex (e.g., Kincses et al. in Neuropsychologia 42:113-117,...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-011-2764-2
更新日期：2011-08-01 00:00:00
abstract：:During fast, saccadic eye movements visual perception is suppressed. This saccadic suppression prevents erroneous and distracting motion percepts resulting from saccade induced retinal slip. Although saccadic suppression occurs over a substantial time interval around the saccade, there is no "perceptual gap" during sa...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-007-0876-5
更新日期：2007-07-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210050457
更新日期：1998-08-01 00:00:00
abstract：:The anatomical pathway from the prepyriform cortex to the hippocampus in the cat was traced autoradiographically by means of anterograde transport of [3H] leucine. A direct projection from the prepyriform cortex to the lateral entorhinal area was confirmed in the cat: the termination of these fibers was largely confin...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00236644
更新日期：1980-02-01 00:00:00
abstract：:The main belly of the macaque's flexor digitorum profundus (FDP) is divided by a dissectible plane into radial and ulnar regions. The present report describes three findings which suggest that the radial and ulnar regions represent separate functional subdivisions of the FDP. First, electromyographic (EMG) recordings ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00229783
更新日期：1993-01-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210000519
更新日期：2000-11-01 00:00:00
abstract：:Sensitivity to many visual stimuli, and, in particular, image displacement, is reduced during a change in fixation (saccade) compared to when the eye is still. In these experiments, we studied the sensitivity of observers to ecologically relevant image translations of large, complex, real world scenes either during ho...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-009-2120-y
更新日期：2010-04-01 00:00:00
abstract：:Growing evidence suggests that blind subjects outperform the sighted on certain tactile discrimination tasks depending on cutaneous inputs. The purpose of this study was to compare the performance of blind (n = 14) and sighted (n = 15) subjects in a haptic angle discrimination task, depending on both cutaneous and pro...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-008-1327-7
更新日期：2008-06-01 00:00:00
abstract：:The effect of Coriolis, cross-coupled stimulation on the vestibuloocular reflex and the elicitation of motion sickness depends on background gravitoinertial force level (DiZio et al. 1986, 1987; Graybiel et al. 1977; Lackner and Graybiel 1984, 1986). We have explored whether this response dependency is related to the ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00247597
更新日期：1988-01-01 00:00:00
abstract：:The gain (ratio of eye velocity to head velocity) of the initial horizontal vestibulo-ocular reflex (VOR) was calculated in 12 normal subjects over 350 ms during impulsive, unpredictable whole body rotation under three conditions: (1) darkness; (2) visual enhancement of the VOR, while the subjects fixated a stationary...
journal_title：Experimental brain research
pub_type： 临床试验,杂志文章
doi：10.1007/BF00239596
更新日期：1994-01-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-020-05871-2
更新日期：2020-10-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00235975
更新日期：1987-01-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-008-1595-2
更新日期：2009-02-01 00:00:00
abstract：:It is a conservative and reasonable suggestion that implicit functioning, as in blindsight, is simply a weakened, degraded form of normal functioning, especially as the parameters of vision in blindsight are themselves weakened--e.g., acuity is reduced, detection thresholds are raised, chromatic discrimination is coar...
journal_title：Experimental brain research
pub_type： 杂志文章,评审
doi：10.1007/s00221-008-1388-7
更新日期：2009-01-01 00:00:00
abstract：:Injections of horseradish peroxidase conjugated with wheat germ agglutinin (WGA-HRP) were made into the cortex of kittens. When cytochrome oxidase histochemistry was performed on sections taken through the injection sites staining of the WGA-HRP deposits occurred, demonstrating that WGA-HRP can cross-react during proc...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00238970
更新日期：1985-01-01 00:00:00
abstract：:The relationship between neuronal calcium binding protein content (calbindin D28K: CaBP and parvalbumin: PV) and vulnerability to ischemia was studied in different regions of the rat brain using the four vessel occlusion model of complete forebrain ischemia. The areas studied, i.e. the hippocampal formation, neocortex...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00232193
更新日期：1990-01-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-011-2657-4
更新日期：2011-05-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00227785
更新日期：1993-01-01 00:00:00
abstract：:In a previous study we have demonstrated the existence of pulvinar (puv) cells which were optimally activated when a monkey executed reaching movements with his limbs (Acuña et al 1983). We now describe further observations in four Macaca nemestrina monkeys trained to perform goal directed reaching movements aimed at ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00230847
更新日期：1990-01-01 00:00:00
abstract：:This review summarizes anatomical and electrophysiological observations related to corticovestibular interactions as a step toward understanding their possible functions. Vestibular information is represented in at least three distinct regions of the cerebral cortex in cats and monkeys: the parietal and somatosensory ...
journal_title：Experimental brain research
pub_type： 杂志文章,评审
doi：10.1007/pl00005786
更新日期：1997-10-01 00:00:00
abstract：:Previous work has shown that motor learning is associated with changes to both movements and to the somatosensory perception of limb position. In an earlier study that motivates the current work, it appeared that following washout trials, movements did not return to baseline but rather were aligned with associated cha...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-019-05509-y
更新日期：2019-05-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-007-1184-9
更新日期：2008-03-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00239581
更新日期：1982-01-01 00:00:00
abstract：:Many studies demonstrated a higher accuracy in perception and action when using more than one sense. The maximum-likelihood estimation (MLE) model offers a recent approach on how perceptual information is integrated across different sensory modalities suggesting statistically optimal integration. The purpose of the pr...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-009-2099-4
更新日期：2010-04-01 00:00:00
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
