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' nucleus. These P-cells were classified into 6 groups according to the receptive fields of the climbing fibre responses (CFRs) which were evoked by electrical stimulation in each limb at the radial and sciatic nerve bundles. One group designated as forelimb units received the CFRs from both forelimbs and from neither hindlimb. According to previous studies, this group of P-cells is thought to make inhibitory connections with Deiters neurones projecting to the ipsilateral cervicothoracic spinal cord. For the forelimb units, two types of discharge patterns for simple spikes were found in relation to limb movements during locomotion. Type I cells showed one peak in their firing rate in the late swing (E1) or early stance (E2) phase of the ipsilateral forelimb. Type II cells showed two peaks and two valleys during one step cycle: one peak was in the E1 phase, the other in the late stance (E3) or early swing (F) phase; each of the two valleys followed the peak. Complex spikes of the forelimb units occurred more frequently in the E1 phase than during the other phases. The increased activity of simple and complex spikes of the forelimb units in the E2 phase is suggested to have a functional significance in preparing the appropriate floor reaction forces that appear upon touchdown on the ipsilateral forelimb.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Udo M,Matsukawa K,Kamei H,Minoda K,Oda Ydoi
10.1007/BF00238886subject
Has Abstractpub_date
1981-01-01 00:00:00pages
292-300issue
3-4eissn
0014-4819issn
1432-1106journal_volume
41pub_type
杂志文章abstract::The smooth-pursuit system uses retinal image-slip-velocity information of target motion to match eye velocity to actual target velocity. The caudal part of the frontal eye fields (FEF) contains neurons whose activity is related to direction and velocity of smooth-pursuit eye movements (pursuit neurons), and these neur...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-008-1606-3
更新日期:2009-02-01 00:00:00
abstract::The purpose of this research was to ascertain whether gravitational cues contribute to localisation ability of mentally represented cutaneous targets. Eight right-handed male subjects were asked to use each hand to point accurately toward four points in the anterior trunk midline solely on the basis of the mental repr...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s002210100723
更新日期:2001-05-01 00:00:00
abstract::Previous studies have proposed that selecting which hand to use for a reaching task appears to be modulated by a factor described as "task difficulty," defined by either the requirement for spatial precision or movement sequences. However, we previously reported that analysis of the movement costs associated with even...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-018-5423-z
更新日期:2019-02-01 00:00:00
abstract::Single cell activity was recorded from the putamen in rhesus monkeys (Macaca mulatta) performing limb movements made both with and without a preceding preparatory "set" concerning the impending direction of movement. The monkeys were trained to perform an elbow step-tracking task, each trial of which required the subj...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00247293
更新日期:1987-01-01 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::Descending vestibular pathways have been shown to influence recruitment thresholds of alpha motoneurones in both human and cat. However, whereas parallel connections to the fusimotor system have been shown in the cat, such connections have not yet been demonstrated in humans. In the present study we investigated wheth...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-006-0836-5
更新日期:2007-06-01 00:00:00
abstract::Both a neuropsychological syndrome (unilateral spatial neglect) and a visual illusion of length (the Brentano version of the Müller-Lyer illusion) bring about a misjudgement of the subjective centre of a horizontal line, with a unilateral shift. In experiment 1 we investigated, in patients with left unilateral neglect...
journal_title:Experimental brain research
pub_type: 临床试验,杂志文章
doi:10.1007/s00221-002-1034-8
更新日期:2002-05-01 00:00:00
abstract::The projection from the nucleus prepositus hypoglossi (PH) to the superior colliculus (SC) has been proposed to provide a feedback control of collicular saccadic activities. The present study aimed to identify the functional properties of PH neurones projecting to the SC relative to eye movement parameters. Preposito-...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00229141
更新日期:1996-08-01 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::When a tracked target is occluded transiently, extraretinal signals are known to maintain smooth pursuit, albeit with a reduced gain. The extent to which extraretinal signals incorporate predictions of time-varying behavior, such as gradual changes in target direction, is not known. Three experiments were conducted to...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-006-0717-y
更新日期:2007-03-01 00:00:00
abstract::It has previously been demonstrated that Pre-I neurons, localized in the rostral ventrolateral medulla, are important in the generation of the primary respiratory rhythm in brainstem-spinal cord preparations from newborn rats. To investigate whether or not Pre-I neurons have endogenous pacemaker properties, we examine...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00248909
更新日期:1989-01-01 00:00:00
abstract::Extracellular recordings were made from single on-center optic tract fibres in cats. Light spots of 10sec duration were focussed on the center of the receptive field under 1cd/m2 adaptation luminance by diffuse light. In the maintained discharges at 1 cd/m2, the shape of inter-spike interval histograms (IH) tended to ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00235016
更新日期:1976-01-26 00:00:00
abstract::Cultured olfactory bulb cells from embryonic mice had ultrastructural characteristics similar to those of many cell types in the intact adult mouse olfactory bulb. Identified cultured cells included mitral/tufted cells, granule cells, short-axon cells, and fibrous and protoplasmic astrocytes. Cultured neurons were fou...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF02738402
更新日期:1994-01-01 00:00:00
abstract::The study assessed the ability of the central nervous system (CNS) to use echoic information from sensory substitution devices (SSDs) to rotate the shoulders and safely pass through apertures of different width. Ten visually normal participants performed this task with full vision, or blindfolded using an SSD to obtai...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-013-3809-5
更新日期:2014-03-01 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 cats, 107 area 18 neurones with identified FR type, 10-50 degrees from the visual axis, were tested for the influence of direction, velocity and amplitude of movement. These three parameters are believed to be the primary parameters of a movement analysing system. 94% of the neurones were influenced by the directio...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00237863
更新日期:1977-10-24 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::Functional reorganization in a musician's brain has long been considered strong evidence of experience-dependent neuroplasticity. Highly coordinated bimanual movements require abundant communication between bilateral hemispheres. Interhemispheric inhibition (IHI) is the communication between bilateral primary motor co...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-020-05951-3
更新日期:2020-12-01 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::Early postnatal application of thyroid hormones to rats results in morphological changes in septum and hippocampus. Modulation in the expression of either neurotrophins and/or their receptors is postulated to be responsible for these effects. In the present study we tested whether thyroxine administration leads to cha...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s002210050313
更新日期:1998-03-01 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::Human subjects can readily adapt their movement trajectories to different dynamic or visuomotor environments. The focus of the current study was to determine whether subjects could simultaneously adapt to multiple dynamic environments. Subjects ( n=5) drew ellipses continuously for 70 s using a torquable manipulandum ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-002-1260-0
更新日期:2003-01-01 00:00:00
abstract::We tested the hypothesis that frontal eye field (FEF) visual activity integrates visual information with a template of a target by examining whether a target that is not present in a search display influences the target selection in FEF. Neural activity was recorded in FEF of macaque monkeys performing visual search f...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-003-1461-1
更新日期:2003-08-01 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::Unitary discharges of the lateral geniculate nucleus (LGN) were analyzed in anesthetized and paralyzed rats after inactivation of visual cortical areas (VC) by cryoblockade or by depositing a cotton wick soaked in KCl (3 M). The receptive fields were mapped prior to and following the interruption of the cortico-genicu...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00238152
更新日期:1984-01-01 00:00:00
abstract::We investigated the association between the degree of lesion overlap with the corticospinal tract and walking performance before and after 4-weeks of partial body weight support (PBWS) treadmill training in 18 individuals (ten male, eight female) with a mean age 59 +/- 13 years (mean +/- SD), range 32-74 years, who we...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-007-1237-0
更新日期:2008-03-01 00:00:00
abstract::Using laminar field potential analysis, we examined responses elicited by both photic and optic nerve stimulations in 30 kittens of 0--65 days of age and in three adult cats. In adult cats, the response in the visual cortex on optic nerve stimulations is a wave complex which consists mainly of surface positive depth n...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00236803
更新日期:1983-01-01 00:00:00
abstract::Postsynaptic potentials (PSPs) evoked in motoneurons innervating the back and abdominal muscles in the lumbar part of the body by stimulating hindlimb cutaneous afferents were investigated in unanesthetized decerebate and spinal cats. Various types of PSP: pure excitatory postsynaptic potential (EPSP), pure inhibitory...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s002210050879
更新日期:1999-10-01 00:00:00
abstract::To address the hypothesis that Parkinson's disease (PD) patients have deficits in controlling acceleration, a drawing task was used in which target size, frequency, and weight of pen were manipulated. In accordance with previous results, it was found that, relative to controls, PD patients produced movements at the re...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-009-1925-z
更新日期:2009-08-01 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