Abstract:
:In the thalamic reticular nucleus (TR) of the rat a cluster of neurons has been located which receives auditory inputs and acts as a source of inhibition for relay neurons of the medial geniculate nucleus (MG). These TR neurons (auditory thalamic reticular neurons; A-TR neurons) showed a repetitive burst of grouped discharge upon electrical stimulation of the inferior colliculus (IC) or of the auditory cortex. Many of them responded to tonal stimuli such as clicks or pips. Adjacent to the cluster of A-TR neurons there were the cluster of TR neurons receiving visual inputs (V-TR neurons) and that receiving somatosensory inputs (S-TR neurons). The cluster of A-TR neurons was situated ventrally to the cluster of V-TR neurons, both extending caudally from the level of the rostral tip of the dorsal lateral geniculate nucleus. The S-TR neurons distributed rostrally to the clusters of A- and V-TR neurons. Some of the sensory TR neurons, usually found around the boundaries between the clusters of different sensory modalities, were activated from stimulation of different central sensory pathways. Single electric shocks directly applied to the cluster of A-TR neurons suppressed discharges of relay neurons of the MG, either spontaneous or evoked by click stimuli or by electric shocks to the IC. The postexcitatory suppression of MG relay neurons was similar in time course to the suppression following electrical stimulation of A-TR neurons. Response latencies of the A-TR neurons to IC shocks were found to be 1.0-1.5 ms longer than those of the MG relay cells with respect to the modal and shortest values. It is suggested that A-TR neurons are intercalated in the axon collateral circuit of the thalamocortical projection arising from relay neurons of the MG.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Shosaku A,Sumitomo Idoi
10.1007/BF00238784subject
Has Abstractpub_date
1983-01-01 00:00:00pages
432-42issue
3eissn
0014-4819issn
1432-1106journal_volume
49pub_type
杂志文章abstract::Adrenocortical responses, as expressed by changes in plasma corticosterone levels, following ether stress and dorsal hippocampal stimulation, were studied in intact rats and in rats with complete, anterior of posterior hypothalamic deafferentations. Ether stress produced normal responses in all experimental groups. In...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00237345
更新日期:1981-01-01 00:00:00
abstract::Here, we demonstrate a systematic shift in the perceived location of a tactile stimulus on the arm toward where the eye is looking. Participants reported the perceived position of touches presented between the elbow and the wrist while maintaining eye positions at various eccentricities. The perceived location of the ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-009-1884-4
更新日期:2009-09-01 00:00:00
abstract::Transient changes in extracellular potassium concentration ([K+]o) and field potentials were evoked by 4-aminopyridine (4-AP; 50-100 microM) and recorded with ion-selective microelectrodes in CA1b, CA3b and dentate sectors of adult rat hippocampal slices. Long-lasting field potentials recurred at a frequency of approx...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00228628
更新日期:1996-04-01 00:00:00
abstract::Adaptation of motor control to weightlessness was studied during a 7-day spaceflight. The maintenance of control of upright posture was examined during a voluntary raising movement of the arm and during the voluntary raising on tiptoe. In order to evaluate the contribution of visual cues, three types of visual situati...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00231132
更新日期:1984-01-01 00:00:00
abstract::In a choice reaction time (RT) paradigm, providing partial advance information (a precue) about the upcoming response has been shown to decrease RT, presumably due to preprogramming of the precued parameters. When advance information about a particular aspect of a movement is provided (precued), several different stra...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-011-2893-7
更新日期:2011-12-01 00:00:00
abstract::It has long been assumed that the human central nervous system uses flexible combinations of several muscle synergies to effortlessly and efficiently control redundant movements. However, whether muscle synergies exist in the neural circuit remains controversial, and it is critical to examine the association between t...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-015-4253-5
更新日期:2015-06-01 00:00:00
abstract::The time course of local changes of the extracellular space (ES) was investigated by measuring concentration changes of repeatedly injected tetramethylammonium (TMA+) and choline (Ch+) ions for which cell membranes are largely impermeable. After stimulus-induced extracellular [K+] elevations the delta [TMA+] and delta...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00236151
更新日期:1980-01-01 00:00:00
abstract::The activity of voltage-gated K(+) channels (Kv) can be dynamically modulated by several events, including neurotransmitter stimulated biochemical cascades mediated by G protein-coupled receptors such as 5-HT2 receptors (5-HT2Rs). Activation of 5-HT2A/CR inhibits the Shaker-like K(+) channels Kv1.1 and Kv1.2, and this...
journal_title:Experimental brain research
pub_type: 杂志文章,评审
doi:10.1007/s00221-013-3555-8
更新日期:2013-10-01 00:00:00
abstract::Adolescence is a transition period that is assumed to be characterized by increased sensitivity to reward. While there is growing research on reward processing in adolescents, investigations into the engagement of brain regions under different reward-related conditions in one sample of healthy adolescents, especially ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-012-3272-8
更新日期:2012-11-01 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::The results of this study show that the different receptive fields of multisensory neurons in the cortex of the cat anterior ectosylvian sulcus (AES) were in spatial register, and it is this register that determined the manner in which these neurons integrated multiple sensory stimuli. The functional properties of mul...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00227844
更新日期:1992-01-01 00:00:00
abstract::We studied Fos expression in the central nociceptive pathways at different sedative levels in order to clarify the central mechanism of propofol's nociceptive action. Sprague-Dawley rats received propofol (PRO) or pentobarbital (PEN) and were divided into two groups with different doses of drug administration (light a...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-006-0779-x
更新日期:2007-05-01 00:00:00
abstract::Selective lesions of the noradrenergic locus coeruleus (LC) system have recently been shown to aggravate both ischemic and epileptic brain damage. This study explores the possibility that the LC system also influences hypoglycemic brain injury. Bilateral 6-hydroxydopamine lesions of the LC projection to the forebrain ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00279676
更新日期:1988-01-01 00:00:00
abstract::We investigated the contributions of lateral intracortical connections to the orientation tuning of area 17 cells using micro-iontophoresis of the inhibitory transmitter gamma-aminobutyric acid (GABA) to inactivate small cortical sites in the vicinity of a recorded cell. GABA was ejected from an array of micropipettes...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00228003
更新日期:1990-01-01 00:00:00
abstract::It is known that non-clinical subjects with high levels of schizotypal personality traits (High-S), as well as schizophrenic patients, have difficulties to judge how a scene would appear (so-called Appearance questions) from a point of view other than their own after having performed a disembodied perspective taking (...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-014-3991-0
更新日期:2014-10-01 00:00:00
abstract::To date, tactile distractor processing has primarily been investigated by focusing on the spatial characteristics of distractors and the impact of their presentation on the orienting of attention. In two experiments, we examined the influence of tactile distractors when the location of stimulus presentation was kept c...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-014-3929-6
更新日期:2014-07-01 00:00:00
abstract::Head-fixed gaze shifts were evoked by electrical stimulation of the deeper layers of the cat superior colliculus (SC). After a short latency, saccades were triggered with kinematics similar to those of visually guided saccades. When electrical stimulation was maintained for more than 150-200 ms, postsaccadic smooth ey...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00230420
更新日期:1996-01-01 00:00:00
abstract::Motor evoked potentials (MEPs) elicited by transcranial magnetic stimulation (TMS) and transcranial electrical stimulation (TES) of the motor cortex were recorded in separate sessions to assess changes in motor cortex excitability after a fatiguing isometric maximal voluntary contraction (MVC) of the right ankle dorsa...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00240963
更新日期:1995-01-01 00:00:00
abstract::Developmental changes in the human brain coincide with and underlie changes in a wide range of motor and cognitive abilities. Neuroimaging studies have shown that musical training can result in structural and functional plasticity in the brains of musicians, and that this plasticity is greater for those who begin trai...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-006-0619-z
更新日期:2007-01-01 00:00:00
abstract::The effects of electrical stimulation within the midbrain on fusimotor output to the jaw elevator muscles were studied in anaesthetized cats. Muscle spindle afferents recorded in the mesencephalic trigeminal nucleus were categorised as primary or secondary by their responses to succinylcholine during sinusoidal or ram...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00227778
更新日期:1993-01-01 00:00:00
abstract::Prior studies identify two cortical areas, posterior parahippocampal cortex and retrosplenial cortex, that preferentially activate to images of real-world scenes compared to images of other meaningful visual stimuli such as objects and faces. Behavioral and computational studies suggest that sub-categories of real-wor...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-006-0766-2
更新日期:2007-05-01 00:00:00
abstract::Does the brain use a separate internal model for cursor mechanics during visuomotor adaptation? We compared the amount of adaptation and transfer to the opposite arm when subjects reached the targets under different viewing conditions of the arm during reaching. If the brain forms separate models, we predict a differe...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-010-2155-0
更新日期:2010-05-01 00:00:00
abstract::In order to determine whether neurones in the parvicellular reticular formation are in direct synaptic contact with motoneurones innervating facial muscles, a combined retrograde and anterograde transport study was carried out in the rat. Animals received injections of the retrograde tracer cholera toxin B conjugated ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00227336
更新日期:1994-01-01 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::It is a common experience, immediately after the removal of a cast or a splint, to feel motor awkwardness, which is usually attributed to muscular and joint immobilization. However, the same feeling may also be perceived after a brief period of immobilization. We provide evidence that this last effect stems from chang...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-012-3115-7
更新日期:2012-07-01 00:00:00
abstract::We investigated the capacities of human subjects to intercept moving targets in a two-dimensional (2D) space. Subjects were instructed to intercept moving targets on a computer screen using a cursor controlled by an articulated 2D manipulandum. A target was presented in 1 of 18 combinations of three acceleration types...
journal_title:Experimental brain research
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/pl00005769
更新日期:1997-10-01 00:00:00
abstract::The afferent and efferent projections of the lobulus petrosus (LP) of the paraflocculus were examined by retrograde tracing with cholera toxin subunit B (CTB) and anterograde tracing with CTB or biotinylated dextran (BD) in the macaque. Following injections of the tracers into the LP, labeled neurons were seen mainly ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-002-1241-3
更新日期:2002-11-01 00:00:00
abstract::We have developed a tri-axial model of spatial orientation applicable to static 1g and non-1g environments. The model attempts to capture the mechanics of otolith organ transduction of static linear forces and the perceptual computations performed on these sensor signals to yield subjective orientation of the vertical...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-006-0387-9
更新日期:2006-08-01 00:00:00
abstract::This study investigated the modulation of somatosensory evoked potentials (SEPs) during precisely controlled force generation and force relaxation in a visuomotor tracking task. Subjects were instructed to track a target line with a line that represented their own force generated by grip movement with the right hand a...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-012-3082-z
更新日期:2012-06-01 00:00:00
abstract::A series of step-tracking experiments was conducted before, during, and after a 3-week space mission to assess the effects of prolonged microgravity on a non-postural motor-control task. In- and post-flight accuracy was affected only marginally. However, kinematic analyses revealed a considerable change in the underly...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s002210050906
更新日期:1999-12-01 00:00:00