Changes in the inhibitory control exerted by the antagonist Ia afferents on human wrist extensor motor units during an attention-demanding motor task.

abstract：:1. We describe a four-layered neural network (Fig. 1), based on the input organization of a collision signaling neuron in the visual system of the locust, the lobula giant movement detector (LGMD). The 250 photoreceptors ("P" units) in layer 1 are excited by any change in illumination, generated when an image edge pas...

journal_title：Journal of neurophysiology

authors： Rind FC,Bramwell DI

更新日期：1996-03-01 00:00:00

abstract：:Studies on generalization show the nature of how learning is encoded in the brain. Previous studies have shown rather limited generalization of dynamics learning across changes in movement direction, a finding that is consistent with the idea that learning is primarily local. In contrast, studies show a broader patter...

journal_title：Journal of neurophysiology

authors： Mattar AA,Ostry DJ

更新日期：2010-07-01 00:00:00

abstract：:1. Intracellular recordings, in conjunction with fura-2 fluorescence imaging, were used to evaluate the contribution of the different Ca2+ channel subtypes to the Ca2+ influx induced by back-propagating trains of action potentials. High-threshold channels contributed mainly to Ca2+ influx in pyramidal cell somata and ...

journal_title：Journal of neurophysiology

authors： Christie BR,Eliot LS,Ito K,Miyakawa H,Johnston D

更新日期：1995-06-01 00:00:00

abstract：:The operculoinsular cortical region has a major role in the representation of noxious stimuli, based on functional imaging observations, clinical lesion studies, and EEG recordings of specifically pain-related laser-evoked potentials (LEPs) in humans. The source of LEPs has not been identified, and several somatic rep...

journal_title：Journal of neurophysiology

authors： Baumgärtner U,Tiede W,Treede RD,Craig AD

更新日期：2006-11-01 00:00:00

abstract：:The short-term (3-51 days) and long-term (31-42 wk) effects of corpus callosum transection on the receptive-field properties of neurons were assessed at the single-cell, architectural, and topographical levels of organization in the cat striate cortex. Corpus callosum transection decreased the proportion of neurons th...

journal_title：Journal of neurophysiology

authors： Payne BR,Pearson HE,Berman N

更新日期：1984-09-01 00:00:00

abstract：:The neuromodulator acetylcholine (ACh) shapes neocortical function during sensory perception, motor control, arousal, attention, learning, and memory. Here we investigate the mechanisms by which ACh affects neocortical pyramidal neurons in adult mice. Stimulation of cholinergic axons activated muscarinic and nicotinic...

journal_title：Journal of neurophysiology

authors： Hedrick T,Waters J

更新日期：2015-04-01 00:00:00

abstract：:The group I metabotropic glutamate receptor (mGluR) subtype, mGluR1, is highly expressed on the apical dendrites of olfactory bulb mitral cells and thus may be activated by glutamate released from olfactory nerve (ON) terminals. Previous studies have shown that mGluR1 agonists directly excite mitral cells. In the pres...

journal_title：Journal of neurophysiology

authors： Ennis M,Zhu M,Heinbockel T,Hayar A

更新日期：2006-04-01 00:00:00

abstract：:This study examined the effect of chronic exposure to ethanol on gamma-aminobutyric acid type-A (GABA(A)) receptor-mediated responses of layer II pyramidal neurons of the piriform cortex. Slices containing the piriform cortex were derived from pair-fed adult rats maintained on ethanol-supplemented or control liquid di...

journal_title：Journal of neurophysiology

authors： Signore AP,Yeh HH

更新日期：2000-07-01 00:00:00

abstract：:The responses of sustaining and dimming fibers were characterized by the time varying firing rates elicited by extrinsic current and flashes of light. These data were simulated by an adaptive integrate-and-fire model. A postimpulse shunt conductance simulated spike-frequency adaptation. The correlation between observe...

journal_title：Journal of neurophysiology

authors： Glantz RM,Schroeter JP

更新日期：2004-07-01 00:00:00

abstract：:The Wilson-Cowan population model of neural activity has greatly influenced our understanding of the mechanisms for the generation of brain rhythms and the emergence of structured brain activity. As well as the many insights that have been obtained from its mathematical analysis, it is now widely used in the computati...

journal_title：Journal of neurophysiology

authors： Byrne Á,O'Dea RD,Forrester M,Ross J,Coombes S

更新日期：2020-02-01 00:00:00

abstract：:We have previously shown that sinusoidal galvanic vestibular stimulation (sGVS), delivered at 0.2-2.0 Hz, evokes a partial entrainment of muscle sympathetic nerve activity (MSNA). Moreover, at lower frequencies of stimulation (0.08-0.18 Hz) sGVS produces two peaks of modulation: one (primary) peak associated with the ...

journal_title：Journal of neurophysiology

authors： Singh N,Hammam E,Macefield VG

更新日期：2019-05-01 00:00:00

abstract：:The neural organization of the superior colliculus (SC) projection to horizontal ocular motoneurons was analyzed in anesthetized cats using intracellular recording and transneuronal labeling. Intracellular responses to SC stimulation were analyzed in lateral rectus (LR) and medial rectus (MR) motoneurons and internucl...

journal_title：Journal of neurophysiology

authors： Izawa Y,Sugiuchi Y,Shinoda Y

更新日期：1999-06-01 00:00:00

abstract：:1. Monkeys were trained to react to an arm perturbation according to an instruction delivered prior to the perturbation. There were two possible instructions (push or pull), and monkeys learned to respond accordingly regardless of the direction (push or pull) of the triggering perturbation. 2. Pyramidal tract neurons ...

journal_title：Journal of neurophysiology

authors： Evarts EV,Tanji J

更新日期：1976-09-01 00:00:00

abstract：:Rectification of surface EMG before spectral analysis is a well-established preprocessing method used in the detection of motor unit firing patterns. A number of recent studies have called into question the need for rectification before spectral analysis, pointing out that there is no supporting experimental evidence ...

journal_title：Journal of neurophysiology

authors： Ward NJ,Farmer SF,Berthouze L,Halliday DM

更新日期：2013-10-01 00:00:00

abstract：:We developed a sway-referenced system for sitting to highlight the role of vestibular and visual contributions to trunk control. Motor control was investigated by measuring trunk kinematics in the frontal plane while manipulating visual availability and introducing a concurrent cognitive task. We examined motor learni...

journal_title：Journal of neurophysiology

authors： Goodworth AD,Tetreault K,Lanman J,Klidonas T,Kim S,Saavedra S

更新日期：2018-07-01 00:00:00

abstract：:1. Current- and voltage-clamp studies were conducted on isolated rat adrenal chromaffin cells to identify the voltage-dependent ion channels mediating inward currents. 2. Mean resting membrane potential of the isolated cells was -62 +/- 3 (SE) mV. Evoked action potentials were both Na+ and Ca2+ based, and whole cell v...

journal_title：Journal of neurophysiology

authors： Hollins B,Ikeda SR

更新日期：1996-08-01 00:00:00

abstract：:Subjects were asked to track, with their eyes or their hand, the movement of a target that maintained a constant speed and made a single, abrupt change in direction. The tracking speed and direction of motion after the step change in target direction were compared for the eyes and the hand. After removal of the saccad...

journal_title：Journal of neurophysiology

authors： Engel KC,Anderson JH,Soechting JF

更新日期：2000-09-01 00:00:00

abstract：:An in vitro brain stem-spinal cord preparation from an adult urodele (Pleurodeles waltl) was developed in which two fictive rhythmic motor patterns were evoked by bath application of N-methyl-D-aspartate (NMDA; 2.5-10 microM) with D-serine (10 microM). Both motor patterns displayed left-right alternation. The first pa...

journal_title：Journal of neurophysiology

authors： Delvolvé I,Branchereau P,Dubuc R,Cabelguen JM

更新日期：1999-08-01 00:00:00

abstract：:Gain modulation is a ubiquitous phenomenon in cortical neurons, providing flexibility to operate under changing conditions. The prevailing view is that this modulation reflects a change in the relationship between mean input and output firing rate brought about by variation in neuronal membrane characteristics. An alt...

journal_title：Journal of neurophysiology

authors： Azouz R

更新日期：2005-10-01 00:00:00

abstract：:1. The purpose of this study is to define the cortical regions that subserve voluntary saccadic eye movements and spatial working memory in humans. 2. Regional cerebral blood flow (rCBF) during performance of oculomotor tasks was measured with [15O]-H2O positron emission tomography (PET). Eleven well-trained, healthy ...

journal_title：Journal of neurophysiology

authors： Sweeney JA,Mintun MA,Kwee S,Wiseman MB,Brown DL,Rosenberg DR,Carl JR

更新日期：1996-01-01 00:00:00

abstract：:In this study we analyzed transient voltage-activated K+ currents (IA) of projection neurons and local interneurons in the antennal lobe of the cockroach Periplaneta americana The antennal lobe is the first synaptic processing station for olfactory information in insects. Local interneurons are crucial for computing o...

journal_title：Journal of neurophysiology

authors： Paeger L,Bardos V,Kloppenburg P

更新日期：2017-05-01 00:00:00

abstract：:1. The response to an optimally oriented stimulus of both simple and complex cells in the cat's striate visual cortex (area 17) can be suppressed by the superposition of an orthogonally oriented drifting grating. This effect is referred to as cross-orientation suppression. We have examined the spatial organization and...

journal_title：Journal of neurophysiology

authors： DeAngelis GC,Robson JG,Ohzawa I,Freeman RD

更新日期：1992-07-01 00:00:00

abstract：:The noted disruption of thalamocortical connections and abnormalities in tactile sensory function has resulted in a new definition of cerebral palsy (CP) that recognizes the sensorimotor integration process as central to the motor impairments seen in these children. Despite this updated definition, the connection betw...

journal_title：Journal of neurophysiology

authors： Kurz MJ,Heinrichs-Graham E,Becker KM,Wilson TW

更新日期：2015-05-01 00:00:00

abstract：:To investigate the role of interhemispheric β-synchronization in the selection of motor effectors, we trained two monkeys to memorize and perform multiple two-movement sequences that included unimanual repetition and bimanual switching. We recorded local field potentials simultaneously in the bilateral supplementary m...

journal_title：Journal of neurophysiology

authors： Nakajima T,Arisawa H,Hosaka R,Mushiake H

更新日期：2017-11-01 00:00:00

abstract：:Electrically excitable cells have voltage-dependent ion channels on the plasma membrane that regulate membrane permeability to specific ions. Voltage-gated Ca(2+) channels (VGCCs) are especially important as Ca(2+) serves as both a charge carrier and second messenger. Zebrafish (Danio rerio) are an important model ver...

journal_title：Journal of neurophysiology

authors： Won YJ,Ono F,Ikeda SR

更新日期：2011-01-01 00:00:00

abstract：:The interstitial nucleus of Cajal (INC) is thought to control torsional and vertical head posture. Unilateral microstimulation of the INC evokes torsional head rotation to positions that are maintained until stimulation offset. Unilateral INC inactivation evokes head position-holding deficits with the head tilted in t...

journal_title：Journal of neurophysiology

authors： Farshadmanesh F,Chang P,Wang H,Yan X,Corneil BD,Crawford JD

更新日期：2008-09-01 00:00:00

abstract：:1. Dopamine-containing neurons of the rat midbrain were recorded intracellularly in vitro. Anoxia (2-5 min) caused reversible membrane hyperpolarization (4-25 mV), which blocked spontaneous firing of action potentials. Under voltage clamp, anoxia produced an outward current (100-1,000 pA) associated with an increase i...

journal_title：Journal of neurophysiology

authors： Mercuri NB,Bonci A,Johnson SW,Stratta F,Calabresi P,Bernardi G

更新日期：1994-03-01 00:00:00

abstract：:Gain-of-function variants in voltage-gated sodium channel NaV1.7 that increase firing frequency and spontaneous firing of dorsal root ganglion (DRG) neurons have recently been identified in 5-10% of patients with idiopathic small fiber neuropathy (I-SFN). Our previous in vitro observations suggest that enhanced sodium...

journal_title：Journal of neurophysiology

authors： Lee SI,Hoeijmakers JGJ,Faber CG,Merkies ISJ,Lauria G,Waxman SG

更新日期：2020-02-01 00:00:00

abstract：:We investigated behavior, physiology, sensitivity to exogenous application of ecdysone, and nerve terminal structure for differences between the reduced ecdysone genotype, ecd(1)/ecd(1), and wild-type control ecd(1)/TM6B animals during the early and late third instars when raised at 25 degrees C. The ecd(1) mutants we...

journal_title：Journal of neurophysiology

authors： Li H,Harrison D,Jones G,Jones D,Cooper RL

更新日期：2001-01-01 00:00:00

abstract：:Spinothalamic (ST) neurons in the C8-T5 segments of the spinal cord were examined for responses to electrical stimulation of the left thoracic vagus nerve (LTV). Seventy-one ST neurons were studied in 39 anesthetized monkeys (Macaca fascicularis). Each neuron could be excited by manipulation of its somatic field and b...

journal_title：Journal of neurophysiology

authors： Ammons WS,Blair RW,Foreman RD

更新日期：1983-10-01 00:00:00