Abstract：
:Electrophysiological methods were employed to study the axonal properties of the neurons of anterior olfactory nucleus (AON), transition zone (TZ), and rostral prepyriform cortex (RPPC) and their projections towards the ipsilateral and contralateral olfactory bulb (IOB, COB) in the rat. Of 91 antidromically driven cells, 39 (43%) and 32 (35%) responded to IOB and COB stimulation, respectively; 20 (22%) were discharged from both bulbs. Collison tests performed on the latter group indicated that these neurons have a short main axon which divides near the soma, projecting one branch to the COB and a thinner one toward the IOB. Mean conduction velocities of axons projecting to the IOB and the COB were 0.4 m/s and 0.7 o/s, respectively, the faster conducting axons having shorter refractory periods. Of the 38 neurons tested, 92% showed decreases in threshold and latency (up to 20% of control antidromic latency) after a test volley that was preceded by a conditioning pulse at intervals of 20--215 ms. Latency decreases were greater for slowly conducting axons than for the faster ones. These after-effects of impulse activity in OB afferent axons were attributed to the presence of a supernormal period of increased conduction velocity and excitability similar to that found in the olfactory nerve (Bliss and Rosenberg, 1974).
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Moyano HF,Molina JCdoi
10.1007/BF00237113subject
Has Abstractpub_date
1980-01-01 00:00:00pages
241-8issue
3eissn
0014-4819issn
1432-1106journal_volume
39pub_type
杂志文章abstract：:After injection of S35-methionine into cervical and lumbar dorsal root ganglia in turtle, a primary afferent projection was demonstrated on to the cerebellum. Few, but consistent patches of silver grains were found within the granular layer suggesting mossy fiber terminations. The projection was mainly ipsilateral and...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF01208609
更新日期：1982-01-01 00:00:00
abstract：:Based on the observations that the psychostimulant drug amphetamine in combination with physiotherapy can promote recovery of brain function after brain injury, we have studied the ability of the vigilance promoting drug Modafinil to counteract 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-(MPTP)-induced degeneration o...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF02259133
更新日期：1992-01-01 00:00:00
abstract：:Stimulation of the caudal raphe nuclei alters visceral functions. The caudal raphe nuclei project to the nucleus of the solitary tract, which receives the central terminations of vagal afferents and plays an important role in the central integration of autonomic activities. The caudal raphe nuclei also project to the ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00241358
更新日期：1995-01-01 00:00:00
abstract：:Pain catastrophizing has been associated with phantom limb pain, but so far the cortical processes and the brain regions involved in this relationship have not been investigated. It was therefore tested whether catastrophizing was related to (1) spontaneous pain, (2) somatosensory activity and (3) cortical responses i...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-012-3027-6
更新日期：2012-05-01 00:00:00
abstract：:The superior colliculus was bilaterally or unilaterally ablated at different early postnatal ages in rats. When adult, each rat received a unilateral eye injection of Horseradish peroxidase to reveal the crossed and uncrossed retinal terminal fields within the dorsal lateral geniculate nucleus. Collicular ablation in ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00230917
更新日期：1985-01-01 00:00:00
abstract：:Accurate information about gaze direction is required to direct the hand towards visual objects in the environment. In the present experiments, we tested whether retinal inputs affect the accuracy with which healthy subjects indicate their gaze direction with the unseen index finger after voluntary saccadic eye moveme...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-002-1029-5
更新日期：2002-06-01 00:00:00
abstract：:Responses to pure visual stimuli and visual-vestibular interactions similar to those reported in other vertebrates were found in single vestibular nucleus neurons in cat. Contrary to prevailing hypotheses, the cerebellum is not an essential part of the pathway mediating these visual responses. ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00239555
更新日期：1978-08-15 00:00:00
abstract：:The phase of the angular vestibulo-ocular reflex (VOR) is subject to adaptive control. We had previously found that adapting the phase of the VOR also produced changes in drift on eccentric gaze-holding, implying a change in the time constant of the velocity-to-position neural integrator. Here we attempted to dissocia...
journal_title：Experimental brain research
pub_type： 临床试验,杂志文章
doi：10.1007/s002210050392
更新日期：1998-05-01 00:00:00
abstract：:Microscopic illumination of two neighbouring photoreceptor cells within a single ommatidium induces a strong sequence-dependent response in a directionally selective, motion-sensitive neuron. The response is characterized by a strong facilitation in the preferred direction and a weaker inhibition in the reverse direct...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00236243
更新日期：1984-01-01 00:00:00
abstract：:We have previously reported that electrical stimulation in LC or NRM when tested on the activity of a multireceptive neurone in the spinal cord produced similar inhibitory actions. The present study aimed to define the pathways that mediate this descending inhibitory action in the spinal cord by pharmacological means ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00237586
更新日期：1986-01-01 00:00:00
abstract：:Previous findings from our laboratory have shown that the optic nerves of goldfish acclimated to different temperatures differ considerably in their glycerophospholipid composition. This paper describes changes in the morphology of the nerve with different acclimation and fixation temperatures. Optic nerves of 5 and 2...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00248501
更新日期：1988-01-01 00:00:00
abstract：:Extracellular unit recording was employed to study the axonal properties and efferent projections of antidromically identified neurons in the olfactory peduncle (OP) region of a primitive eutherian macrosmatic mammal, the south american armadillo (Chaetophractus vellerosus). Of 72 cells which satisfied the criteria fo...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00340490
更新日期：1986-01-01 00:00:00
abstract：:The effects of degrading retinal image velocity information on suppression of the vestibulo-ocular reflex have been assessed through tachistoscopic presentation of target sources in man. Subjects were required to fixate a head-fixed display during exposure to a 0.5 Hz sinusoidal angular oscillation of the head at +/- ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00239187
更新日期：1983-01-01 00:00:00
abstract：:Projections from the posterior thalamic regions to the striatum were studied in the cat by the anterograde tracing method after injecting wheat germ agglutinin-horseradish peroxidase conjugate (WGA-HRP) into the caudalmost regions of the lateroposterior thalamic nucleus (caudal LP), suprageniculate nucleus (Sg) and ma...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00235934
更新日期：1985-01-01 00:00:00
abstract：:The distribution, dendritic trees and axonal courses of spinally projecting cells in the dorsal column nuclei were studied after labelling by retrograde HRP transport. The region of densest distribution was at the base of the two nuclei and in the area between them, extending for about 2 mm caudally from the obex. Onl...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00235479
更新日期：1984-01-01 00:00:00
abstract：:We compared set-related premotor cortex activity in two conditional motor tasks. In both tasks, a rhesus monkey moved its forelimb to one of two possible targets on the basis of visuospatial instruction stimuli. One target was located to the left of the limb's starting position, the other to the right. In the directio...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00247578
更新日期：1988-01-01 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：:We examined how cerebellar deficits in isolated reaching or grasping movements contribute to abnormalities in a combined reach and grasp movement, and whether people with cerebellar damage show abnormalities in the spatiotemporal relationships of reach and grasp movements. We studied subjects with cerebellar damage an...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-002-1191-9
更新日期：2002-10-01 00:00:00
abstract：:Encoding of visual target location in extrapersonal space requires convergence of at least three types of information: retinal signals, information about orbital eye positions, and the position of the head on the body. Since the position of gaze is the sum of the head position and the eye position, inaccuracy of spati...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00241543
更新日期：1994-01-01 00:00:00
abstract：:A method was developed to record sterotactically from the cat Superior Olivary Complex (SOC) using glass micropipettes. Sound stimulation was given through a closed system that permitted independent variation of interaural time (delta time) and intensity (delta int) differences. The most common binaural units found (n...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00238032
更新日期：1983-01-01 00:00:00
abstract：:The coordination between eye and head movements during a rapid orienting gaze shift has been investigated mainly when subjects made horizontal movements towards visual targets with the eyes starting at the centre of the orbit. Under these conditions, it is difficult to identify the signals driving the two motor system...
journal_title：Experimental brain research
pub_type： 临床试验,杂志文章
doi：10.1007/pl00005663
更新日期：1997-05-01 00:00:00
abstract：:Our goal was to study potential substrates for cortical modulation of vestibular reflexes in the cat. In initial experiments, injections of wheat-germ-agglutinate-horseradish-peroxidase into Deiters' nucleus and the rostral descending nucleus revealed bilateral colonies of retrogradely filled neurons in cortical areas...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210050651
更新日期：1999-03-01 00:00:00
abstract：:Sources of primary afferent depolarization (PAD) of skin afferents in the sural (Sur) nerve and of group-II muscle afferents in the posterior biceps and semitendinosus (PBST) nerve were compared at several sites, about 2 mm apart, within the L7-S2 segments in order to define areas of projection of sacral interneurons ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210000429
更新日期：2000-08-01 00:00:00
abstract：:We previously demonstrated that velocity and movement time for the initial segment for a two-stroke movement are scaled in relation to the difficulty of the second segment. The interdependent kinematic changes were interpreted as evidence that movement planning/organization processes consider the movement parameters o...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210000450
更新日期：2000-09-01 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：:Immunoreactivities for tyrosine hydroxylase (TH), gamma-aminobutyric acid (GABA) and, in some cases, glutamic acid decarboxylase (GAD) were detected by light and electron microscopy in axons projecting into the median eminence and pituitary gland of various mammals (rats, mice, guinea pigs, cats, rabbits and hares). L...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00229836
更新日期：1991-01-01 00:00:00
abstract：:Functional decline in locomotion is common among the elderly, and the prevalence of gait disorders increases with age. Recently, increasing interest has been focused on the influence of age-related decline in brain function and neurological disorders such as dementia and Alzheimer's disease on gait capacity. However, ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-008-1643-y
更新日期：2009-03-01 00:00:00
abstract：:Our brain relies on neural mechanisms of selective attention and converging sensory processing to efficiently cope with rich and unceasing multisensory inputs. One prominent assumption holds that audio-visual synchrony can act as a strong attractor for spatial attention. Here, we tested for a similar effect of audio-v...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-015-4392-8
更新日期：2016-05-01 00:00:00
abstract：:The microtubule associated tau protein becomes hyperphosphorylated in Alzheimer's disease (AD). While hyperphosphorylation promotes neurodegeneration, the cause and consequences of this abnormal modification are poorly understood. As impaired energy metabolism is an important hallmark of AD progression, we tested whet...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-018-5341-0
更新日期：2018-11-01 00:00:00
abstract：:Aiming movements of the upper limbs can be classified either as discrete, or reciprocal, or cyclic. The control of these movements after a stroke can be affected. The aim of this experimental, cross-sectional study was to characterize the performance of these movements after the right and left hemisphere chronic strok...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-020-05897-6
更新日期：2020-10-01 00:00:00
