Abstract：
:Quantitative analysis of dendritic orientation in rapid Golgi sections of the lateral geniculate nucleus of Old World monkeys was performed with the help of a computer-microscope and a tree-analysing program. The orientation of intermediate and terminal dendritic segments of parvocellular and magnocellular multipolar neurons was measured at different ages in relationship to a reference line defined by the major direction of afferent fibres visualized in Golgi preparations and by silver staining. The direction of fibre bundles crossing the nucleus is approximately perpendicular to the layers near their apex, but more oblique laterally and medially. There is a clear tendency for terminal dendritic segments of both parvocellular and magnocellular neurons to be oriented preferentially along these fibres and fewer are perpendicular to them. The orientation of intermediate segments is much less clear, showing a more random orientation with regard to the fibres. There is no obvious influence of the order of branching or of the age of the animal (between late gestation and maturity) on the orientation of terminal and intermediate dendritic segments. A parallel study (Leuba and Garey 1984) suggests that there is greater plasticity in the terminal part of the dendritic tree, and it is possible that the maturation of afferent fibres causes these terminal segments to orient along them very early during normal development.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Leuba G,Garey LJdoi
10.1007/BF00236293subject
Has Abstractpub_date
1984-01-01 00:00:00pages
369-76issue
2eissn
0014-4819issn
1432-1106journal_volume
56pub_type
杂志文章abstract：:Autologous segments of peroneal nerve were implanted into the medulla of adult rats to induce axonal regeneration of central neurons axotomised during the grafting procedure. Grafts were inserted in the midline--where respiratory axons decussate--or laterally, either in the nucleus tractus solitarius or in the nucleus...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00228412
更新日期：1994-01-01 00:00:00
abstract：:It has been suggested that the deficit in understanding others' intention in autism depends on a malfunctioning of the mirror system. This malfunction could be due either to a deficit of the basic mirror mechanism or to a disorganization of chained action organization on which the mirror understanding of others' inten...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-008-1578-3
更新日期：2009-01-01 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 pattern of gamma-efferent innervation of the muscle spindle was investigated in the peroneus tertius muscle of the cat. A number of spindle group Ia afferents were isolated and monitored during tetanic stimulation of isolated gamma-axons. The sample was dominated by efferents producing a static fusimotor effect on...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00236812
更新日期：1983-01-01 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 studied 12 patients with Parkinson's disease (PD): 6 with postural instability (Hoehn and Yahr Stage 3) and 6 without (Stage 2 or 2.5), using a quantitative test based on the clinical pull test. Their findings were compared with those for 12 healthy controls. The patients on their usual medications were pulled eith...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-019-05553-8
更新日期：2019-07-01 00:00:00
abstract：:The proportions and some of the properties of X and Y cells in lateral geniculate nucleus (LGN) of adult cats were measured 14-16 days after monocular paralysis. The paralysis was produced by sectioning cranial nerves III, IV and VI. No difference from normal was observed in the proportions of X and Y cells either in ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00236898
更新日期：1981-01-01 00:00:00
abstract：:We investigated whether perception of affordances for standing on an inclined surface depended on the height of center of mass of the perceiver-actor. Participants adjusted the angle of inclination of a surface until they felt that it was just barely possible for them to stand on that surface. They performed this task...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-008-1492-8
更新日期：2008-10-01 00:00:00
abstract：:The developmental pattern of hippocampal mossy fiber (dentate granule cell axon) innervation to the pyramidal cell layer was examined with anterograde transport methods. Injection of 3H-leucine into the dentate gyrus on PN 1 resulted in labeling of the incipient stratum lucidum extending to, but not beyond, the CA3 re...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00248368
更新日期：1988-01-01 00:00:00
abstract：:Quantitative autoradiography was used to investigate the distribution and effects of gonadal hormones on [3H] muscimol (specific GABAA receptor ligand) binding in the male Japanese quail brain. In gonadally intact Japanese quail brains, [3H] muscimol revealed a heterogeneous distribution with high GABAA receptor level...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00227088
更新日期：1991-01-01 00:00:00
abstract：:The descending projection of the hypothalamic paraventricular nucleus (PVN) to the sympathetic preganglionic neurons (SPNs) in the upper thoracic cord of the rat was studied. PVN-fibers were labeled by anterograde transport of Phaseolus vulgaris leucoagglutinin (PHA-L), while SPNs were retrogradely labeled with choler...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00229982
更新日期：1991-01-01 00:00:00
abstract：:Previous studies have shown that rearing rabbits in a stroboscopically illuminated environment results in a decrease in orientation and direction selectivity and an increase in responsivity to stroboscopic stimuli among neurons in area 17. In the present study, the critical period for susceptibility to these effects w...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00239202
更新日期：1983-01-01 00:00:00
abstract：:Saslow and others have shown that the latency of foveating saccades can be altered by changing the offset time of the current fixation point relative to the onset of the peripheral target. Whether anticipatory saccades contributed to these results was not known. By the criteria of direction error and amplitude error t...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00255238
更新日期：1987-01-01 00:00:00
abstract：:Geniculate cell responses to moving bars and moving texture were compared in normal cats and in cats in which the corticofugal feedback was removed by cortical ablation. In experimental animals the response strength and the velocity upper cutoff assessed with a moving bar was reduced compared to control animals. The s...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00608257
更新日期：1990-01-01 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：:After intracranial transection of the optic nerve in cats the retinal stump of the nerve was injected with HRP. Surviving retinal ganglion cells can be retrogradely labeled at least up to 15.5 months of postoperative survival. ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00261356
更新日期：1985-01-01 00:00:00
abstract：:In order to see whether septal neurones are connected to the hypothalamic neurones secreting vasopressin or oxytocin, neurones in different regions of the septum were recorded during electrical stimulation of the supraoptic nucleus. The position of the stimulating electrode within the latter was verified using lactati...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00237493
更新日期：1981-01-01 00:00:00
abstract：:The response of 835 click-sensitive neurons in the inferior colliculus (IC) to ramp frequency modulated (FM) tones was studied in the anaesthetized rat. More than 70% of the cells were sensitive to the FM sound, and over 25% were "FM specialized". Systematic variations of the stimulus parameters showed that sweep velo...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00229838
更新日期：1991-01-01 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：:Quantitative autoradiography was used to examine central binding sites for L-[3H]glutamate in amygdaloid-kindled rats since receptors for excitatory amino acids have been implicated in epileptiform activity and seizure behaviors. In tissue from rats killed five days after two kindled seizures, the ipsilateral hippocam...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00231751
更新日期：1991-01-01 00:00:00
abstract：:Humans show a gravitational advantage in perception: we are more precise at judging the speed of downwards-moving than upwards-moving objects, indicating that gravitational acceleration is an internalised prior. However, it is unclear whether this gravity prior is based on purely perceptual cues or whether it can inco...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-020-05852-5
更新日期：2020-09-01 00:00:00
abstract：:This purpose of this study was to examine the spatial coding of eye movements during static roll tilt (up to +/-45 degrees) relative to perceived earth and head orientations. Binocular videographic recordings obtained in darkness from eight subjects allowed us to quantify the mean deviations in gaze trajectories along...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210050436
更新日期：1998-07-01 00:00:00
abstract：:The effects of intravenous doses (200 mug) of LSD on the activity of single neurones in the primary visual cortex have been studied in cats anaesthetized with urethane. Cells were stimulated with a bright bar of light moved over the receptive field, and orientation tuning was assessed quantitatively before and after a...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00234826
更新日期：1977-01-18 00:00:00
abstract：:Load perturbations were applied to the arm of human subjects under conditions where both limb segments (upper arm and forearm) were free to move. The perturbations consisted of pulses of torque 50 ms in duration and of pseudo-random sequences of such pulses. They were applied to either the forearm or the upper arm. Un...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00237573
更新日期：1986-01-01 00:00:00
abstract：:In order to relate single cell performance to behavioral discrimination one needs measurements of the response variance of the units. We recorded from 183 single units of area V1 of monkeys performing an orientation discrimination task. The response variance was found to increase with increasing response strength. Thi...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00275002
更新日期：1989-01-01 00:00:00
abstract：:The interaction between pain and the motor system is well-known, with past studies showing that pain can alter corticomotor excitability and have deleterious effects on motor learning. The aim of this study was to better understand the cortical mechanisms underlying the interaction between pain and the motor system. E...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-017-4880-0
更新日期：2017-04-01 00:00:00
abstract：:In humans, vibration applied to muscle tendons evokes illusory sensations of movement that are usually associated with an excitatory tonic response in muscles antagonistic to those vibrated (antagonist vibratory response or AVR). The aim of the present study was to investigate the neurophysiological mechanisms underly...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210050631
更新日期：1999-02-01 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：OBJECTIVES:The occurrence of postural and balance disorders is a frequent feature in advanced forms of Parkinson's disease (PD). However, the pathological substrate of these disturbances is poorly understood. METHODS:In the present work, we investigated the evolution of posturometric parameters [center of pressure (Co...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-005-0202-z
更新日期：2006-04-01 00:00:00
abstract：:Our perception of the vertical depends on allocentric information about the visual surrounds, egocentric information about the own body axis and gravicentric information about the pull of gravity. Previous work has documented that some individuals rely strongly on allocentric information, while others do not, and the ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-015-4526-z
更新日期：2016-04-01 00:00:00
