Abstract：
:The uptake of tritiated gamma-aminobutyric acid (3H-GABA) in the oculomotor nucleus of the cat was studied, using light and electron microscopic examination of radioautograms after intracerebral in vivo administration of the amino-acid. A glial uptake by oligodendrocytes was seen together with a neuronal uptake of the tracer in a certain type of axon terminals found in synaptic contact with both dendrites and soma, some of them exhibiting all the ultrastructural features of motoneurons. Previous neurochemical, electrophysiological and immunocytochemical studies indicate that GABA might well be the inhibitory neurotransmitter in the vestibuloocular reflex arc. The present results show that a morphological substrate exists for the presumed postsynaptic GABAergic inhibition of ocular motoneurons, at least in the oculomotor nucleus of the cat.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Lanoir J,Soghomonian JJ,Cadenel Gdoi
10.1007/BF00239581subject
Has Abstractpub_date
1982-01-01 00:00:00pages
137-43issue
1eissn
0014-4819issn
1432-1106journal_volume
48pub_type
杂志文章abstract：:Cultured rat hippocampal neurons with short processes were investigated using the whole cell voltage clamp under conditions appropriate for isolating Na+ currents. After incubation of the neuron culture for a period of 15-30 min in 1 mM sodium valproate, several parameters of the Na+ current were changed. The peak Na+...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00228395
更新日期：1993-01-01 00:00:00
abstract：:The present study tested the idea that the visuomotor systems mediating prehension do not have independent access to pictorial cues processed by perceptual mechanisms. Individuals with visual form agnosia, whose perceptual systems are compromised but who have intact visuomotor control, were examined to determine wheth...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/pl00005731
更新日期：1997-08-01 00:00:00
abstract：:The latencies of visually-evoked responses from X- and Y-type neurons of the cat's dorsal lateral geniculate nucleus were measured in a manner that takes account of the inherent variability of discharge in these cells. Latencies measured in this way vary from trial to trial in one cell (and also between cells) by tens...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00235998
更新日期：1987-01-01 00:00:00
abstract：:The horizontal and vertical components of the positions of both eyes of rhesus monkeys were measured during periods of binocularly stable eye positions (eye pauses) while the animals fixated a small target. Differences between monocular and binocular viewing, as well as effects of target size and background illuminati...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00236231
更新日期：1984-01-01 00:00:00
abstract：:Recently, it has been reported that grasping with the left hand is more vulnerable to visual size illusions than grasping with the right hand. The present study investigated whether this increased sensitivity of the left hand for visual context extends to reaching. Left- and right-handed participants reached for targe...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-010-2214-6
更新日期：2010-05-01 00:00:00
abstract：:Anticipatory synergy adjustment (ASA) is a feed-forward control mechanism that describes a continuous decrease in the stability of the current motor state beginning about 150 ms prior to a state transition. Recently, we described an associated phenomenon in which the system stability was reduced solely in response to ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-018-5333-0
更新日期：2018-10-01 00:00:00
abstract：:The purpose of this study was to investigate the relationship between EEG-derived motor activity-related cortical potential (MRCP) and voluntary muscle activation. Eight healthy volunteers participated in two experimental sessions. In one session, subjects performed isometric elbow-flexion contractions at four intensi...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210000382
更新日期：2000-08-01 00:00:00
abstract：:The fluorescent double-labeling technique has been used to determine whether the corticopontine and the corticotectal fibers in the cat are derived from two different sets of neurons or whether they are derived from branching neurons which distribute collaterals to the pontine grey and the colliculi. After unilateral ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00269447
更新日期：1987-01-01 00:00:00
abstract：:Studies on grasp control underlying manual dexterity in people with Parkinson disease (PD) suggest that anticipatory grasp control is mainly unaffected during discrete tasks using simple two-digit grasp. Nevertheless, impaired hand function during daily activities is one of the most disabling symptoms of PD. As many d...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-010-2179-5
更新日期：2010-05-01 00:00:00
abstract：:Recent results on the nature and limits of multisensory enhancement are inconsistent when stimuli are presented across spatial regions. We presented visual, tactile and visuotactile stimuli to participants in two speeded response tasks. Each unisensory stimulus was presented to either the left or right hemispace, and ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-010-2515-9
更新日期：2011-09-01 00:00:00
abstract：:Human observers are experts at visual face recognition due to specialized visual mechanisms for face processing that evolve with perceptual expertize. Such expertize has long been attributed to the use of configural processing, enabled by fast, parallel information encoding of the visual information in the face. Here ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-013-3463-y
更新日期：2013-05-01 00:00:00
abstract：:We explored digit coordination during the acceleration phase of a quick lifting movement of a hand-held horizontal object. We tested three hypotheses related to: (1) the scaling of mechanical variables produced by the hand with changes in the external load, torque, and moment of inertia; (2) changes in the safety marg...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-012-3215-4
更新日期：2012-10-01 00:00:00
abstract：:Successive motor unit (MU) twitches often do not sum linearly. Also, muscle spindle (MS) afferents may react nonlinearly to MU contractions occurring at short intervals. Little data is presently available on the interactions between two (or more) MUs regarding their effects on tension output and MS responses. We have ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00237486
更新日期：1986-01-01 00:00:00
abstract：:Responses of motoneurons supplying muscles of the forelimbs, hindlimbs, back, and neck to stimulation of the medial pontomedullary reticular formation were studied with intracellular recording in cerebellectomized cats under chloralose anesthesia. Stimulation of the midline or of a reticular region consisting of nucle...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00238464
更新日期：1979-06-01 00:00:00
abstract：:The synRas transgenic mice express constitutively activated Valin12-Harvey Ras in postnatal neocortical pyramidal neurons. This leads to somatodendritic hypertrophy, higher densities of spines and synapses, and an enhancement of synaptic long-term potentiation associated with an increased glutamate receptor-mediated a...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-008-1688-y
更新日期：2009-12-01 00:00:00
abstract：:The present study was designed to compare the performance of nine dyslexic boys and nine age- and IQ-matched controls on tasks which presumably tap visual functions dependent on the subcortical magnocellular (M) pathway (flicker sensitivity) and the cortical dorsal stream (stereoacuity, structure-from-motion, visuomot...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00231069
更新日期：1995-01-01 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：:Long-range tactile masking has been reported between mirror symmetric body locations. This suggests a general principle of contralateral inhibition between corresponding points on each side of the body that may serve to enhance distinguishing touches on the two halves of the body. Do such effects occur before or after...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-015-4485-4
更新日期：2016-02-01 00:00:00
abstract：:The capacity to acquire motor skills through repeated practice of a sequence of movements underlies many everyday activities. Extensive research in humans has dealt with the importance of spatial and temporal factors on motor sequence learning, standing in contrast to the few studies available in animals, particularly...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-011-2839-0
更新日期：2011-10-01 00:00:00
abstract：:The behavioral relevance of neuronal activity in primate area MT for motion perception and control of visually guided eye movements is well documented. The projections of area MT comprise connections to subcortical structures and to the parietal network, both of which play a role in visuospatial transformation for gui...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-009-1771-z
更新日期：2009-12-01 00:00:00
abstract：:We have previously established an fMRI task battery suitable for mapping the language processing network in children. Among the tasks used, the synonyms and the vowel identification task induced robust task-related activations in children with average language abilities; however, the fixed presentation time seems to b...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-015-4473-8
更新日期：2016-03-01 00:00:00
abstract：:Push-pull cannulae were inserted into both medial and lateral banks of the suprasylvian sulcus and used for local perfusion with artificial extracellular fluid (aECF). Electrical stimulations of regions of cortex projecting to the lateral suprasylvian area (LSA) were accompanied by enhanced levels of release of excita...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00235323
更新日期：1985-01-01 00:00:00
abstract：:Excitatory inputs to neurons in the Forel's field H (FFH) related to visually induced vertical saccades from the ipsilateral superior colliculus (SC) were investigated in chronically prepared alert cats. By stimulation of the deep or intermediate layer of the SC, upward augmenting neurons (ANs) and one long-lead downw...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00230857
更新日期：1990-01-01 00:00:00
abstract：:Sudden limb displacement evokes a complex sequence of compensatory muscle activity. Following the short-latency reflex and preceding voluntary reactions is an epoch termed the medium-latency reflex (MLR) that could reflect spinal processing of group II muscle afferents. One way to test this possibility is oral ingesti...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-017-5162-6
更新日期：2018-03-01 00:00:00
abstract：:Vasopressin and oxytocin immunoreactivity (AVP-IR, OT-IR) have been detected in the trigeminal and dorsal root ganglia (TG, DRG) of the rat. We have investigated whether AVP or OT have any neurotransmitter role in these tissues by measuring the effects of the peptides on levels of intracellular second messengers. AVP ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00248795
更新日期：1987-01-01 00:00:00
abstract：:Cerebral palsy (CP) is a group of non-progressive developmental movement disorders inducing a strong brain reorganization in primary and secondary motor areas. Nevertheless, few studies have been dedicated to quantify brain pattern changes and correlate them with motor characteristics in CP children. In this context, ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-017-5149-3
更新日期：2018-02-01 00:00:00
abstract：:Previous studies in our laboratory examining pointing and reach-to-grasp movements of Parkinson's disease patients (PDPs) have found that PDPs exhibit specific deficits in movement coordination and in the sensorimotor transformations required to accurately guide movements. We have identified a particular difficulty in...
journal_title：Experimental brain research
pub_type： 临床试验,杂志文章
doi：10.1007/s00221-005-0080-4
更新日期：2006-01-01 00:00:00
abstract：:Intracortical inhibition was investigated in normal human volunteers by paired-pulse transcranial magnetic stimulation, using a new, computer-assisted threshold-tracking method. Motor threshold was defined as the stimulus amplitude required to evoke a motor evoked potential of 0.2 mV (peak-to-peak) in abductor pollici...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-001-0988-2
更新日期：2002-03-01 00:00:00
abstract：:Slow eye movements were observed while the monkey fixated on a subject-stationary, small target light in front of a moving optokinetic drum in an attempt to suppress optokinetic nystagmus (OKN). These slow eye movements of low amplitude were directed opposite to the moving optokinetic stimulus and, hence, were not ide...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00248564
更新日期：1987-01-01 00:00:00
abstract：:In two experiments, we examined the effect of selective attention at encoding on repetition priming in normal aging and Alzheimer's disease (AD) patients for objects presented visually (experiment 1) or haptically (experiment 2). We used a repetition priming paradigm combined with a selective attention procedure at en...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-008-1441-6
更新日期：2008-08-01 00:00:00
