Role of intracortical inhibition in selective hand muscle activation.

abstract：:N-methyl-D-aspartate receptors (NMDARs) are comprised of different subunits. NR2 subunits confer different pharmacological and biophysical properties to NMDARs. Although NR2B subunit expression is uniform throughout striatum, NR2A subunit expression is greater laterally. Pharmacologically isolated NMDAR-mediated excit...

journal_title：Journal of neurophysiology

authors： Chapman DE,Keefe KA,Wilcox KS

更新日期：2003-01-01 00:00:00

abstract：:This paper compares the activity of hindlimb motor units from muscles mainly composed of fast-twitch muscle fibers (medial and lateral gastrocnemius: MG/LG, tibialis anterior: TA) to motor units from a muscle mainly composed of slow-twitch muscle fibers (soleus: SOL) during unrestrained walking in the conscious rat. S...

journal_title：Journal of neurophysiology

authors： Gorassini M,Eken T,Bennett DJ,Kiehn O,Hultborn H

更新日期：2000-04-01 00:00:00

abstract：:1. Effects of hypothalamic stimulation on activity of dorsomedial medulla neurons that responded to subdiaphragmatic vagal stimulation were investigated in urethan-anesthetized rats. 2. Extracellular recordings were made from 231 neurons in the nucleus of the tractus solitarius (NTS) that fired repetitively in respons...

journal_title：Journal of neurophysiology

authors： Nishimura H,Oomura Y

更新日期：1987-10-01 00:00:00

abstract：:Vestibuloocular reflex performance and adaptation were examined during vestibulocerebellar inactivation by localized lidocaine microdialysis or injection in goldfish. In the light, eye velocity perfectly compensated for head velocity (Vis-VOR) during sinusoidal yaw rotation (1/8 Hz +/- 20 degrees). In the dark, the re...

journal_title：Journal of neurophysiology

authors： McElligott JG,Beeton P,Polk J

更新日期：1998-03-01 00:00:00

abstract：:The majority of cerebral signals destined for the cerebellum are handed over by the pontine nuclei (PN), which thoroughly reorganize the neocortical topography. The PN maps neocortical signals of wide-spread origins into adjacent compartments delineated by spatially precise distribution of cortical terminals and posts...

journal_title：Journal of neurophysiology

authors： Möck M,Butovas S,Schwarz C

更新日期：2006-06-01 00:00:00

abstract：:To gain further insight into the neural mechanisms for different forms of quadrupedal walking, data on postural orientation, hindlimb kinematics, and motor patterns were assessed for four grades of downslope walking, from 25% (14 degrees slope) to 100% (45 degrees), and compared with data from level and downslope walk...

journal_title：Journal of neurophysiology

authors： Smith JL,Carlson-Kuhta P,Trank TV

更新日期：1998-04-01 00:00:00

abstract：:Falls during walking are a major cause of poststroke injury, and walking faster may decrease the ability to recover following a gait perturbation. We compared gait stability between high-functioning poststroke individuals and controls and evaluated the effect of gait speed on gait stability. Ten stroke subjects and te...

journal_title：Journal of neurophysiology

authors： Krasovsky T,Lamontagne A,Feldman AG,Levin MF

更新日期：2013-01-01 00:00:00

abstract：:1. Three parallel maps of the distribution of tuberous electroreceptor inputs are found in the medullary electrosensory lateral line lobe (ELL) of weakly electric fish. Pyramidal cells in each map are known to respond differentially to the frequency of amplitude modulations (AMs) of external electric fields in vivo. W...

journal_title：Journal of neurophysiology

authors： Turner RW,Plant JR,Maler L

更新日期：1996-10-01 00:00:00

abstract：:Adaptation of fingertip forces to friction at the grasping surface is necessary to prevent use of inadequate or excessive grip forces. In the current study we investigated the effect of blocking tactile information from the fingertips noninvasively on the adaptation and efficiency of grip forces to surface friction du...

journal_title：Journal of neurophysiology

authors： Bilaloglu S,Lu Y,Geller D,Rizzo JR,Aluru V,Gardner EP,Raghavan P

更新日期：2016-03-01 00:00:00

abstract：:Second-order vestibular neurons (2 degrees VN) were identified in the isolated frog brain by the presence of monosynaptic excitatory postsynaptic potentials (EPSPs) after separate electrical stimulation of individual vestibular nerve branches. Combinations of one macular and the three semicircular canal nerve branches...

journal_title：Journal of neurophysiology

authors： Straka H,Holler S,Goto F

更新日期：2002-11-01 00:00:00

abstract：:The effect of stimulation of the laterodorsal tegmental nucleus (LDT) on the activity of single neurons in the dorsal lateral geniculate nucleus was studied in rats anesthetized with urethan. The LDT is the largest aggregation of cholinergic neurons in the brain stem that project to the thalamus, and in the rat is suf...

journal_title：Journal of neurophysiology

authors： Kayama Y,Takagi M,Ogawa T

更新日期：1986-11-01 00:00:00

abstract：:1. Spatiotemporal receptive fields (RFs) for left and right eyes were studied for simple cells in the cat's striate cortex to examine the idea that stereoscopic depth information is encoded via structural differences of RFs between the two eyes. Traditional models are based on neurons that possess matched RF profiles ...

journal_title：Journal of neurophysiology

authors： Ohzawa I,DeAngelis GC,Freeman RD

更新日期：1996-05-01 00:00:00

abstract：:1. The transmission in the spinal monosynaptic pathway was studied during repetitive stimulation of a motor nerve by 10 stimuli at 2, 5, or 10 Hz in spinal cats. Initially, the amplitudes of the monosynaptic responses rapidly declined, reaching a plateau after a few stimuli. The level of the plateau was inversely rela...

journal_title：Journal of neurophysiology

authors： Capek R,Esplin B

更新日期：1977-01-01 00:00:00

abstract：:1. In the European rock lobster, Homarus gammarus, two bilaterally symmetrical pairs of commissural neurons, P and commissural pyloric (CP), evoke excitatory postsynaptic potentials in the neurons of the pyloric motor network. The present paper shows that the two commissural neurons also exert a modulatory control ove...

journal_title：Journal of neurophysiology

authors： Nagy F,Cardi P

更新日期：1994-06-01 00:00:00

abstract：:Synaptic currents are frequently assumed to make a major contribution to the extracellular field potential (EFP). However, in any neuronal population, the explicit separation of synaptic sources from other contributions such as postsynaptic spikes remains a challenge. Here we take advantage of the simple organization ...

journal_title：Journal of neurophysiology

authors： McColgan T,Kuokkanen PT,Carr CE,Kempter R

更新日期：2019-03-01 00:00:00

abstract：:We have used electrophysiological techniques to document segmental differences in the pathways between the giant, escape command axons, lateral giants (LG) and medial giants (MG), and the nongiant, fast flexor (FF) motoneurons. We found no difference in the input from LG and MG axons to FF motoneurons in the posterior...

journal_title：Journal of neurophysiology

authors： Miller LA,Hagiwara G,Wine JJ

更新日期：1985-01-01 00:00:00

abstract：:Biological gain mechanisms regulate the sensitivity and dynamics of signaling pathways at the systemic, cellular, and molecular levels. In the sympathetic nervous system, gain in sensory-motor feedback loops is essential for homeostatic regulation of blood pressure and body temperature. This study shows how synaptic c...

journal_title：Journal of neurophysiology

authors： Wheeler DW,Kullmann PH,Horn JP

更新日期：2004-11-01 00:00:00

abstract：:Impulse from soleus muscle afferents were recorded in premammillary cats that were walking on a treadmill. In normal walking the effects of gamma-motoneurons on impulse rates of muscle spindle afferents are confounded by the effects of the large length changes that occur. To isolate the effects of gamma-motoneurons th...

journal_title：Journal of neurophysiology

authors： Taylor J,Stein RB,Murphy PR

更新日期：1985-02-01 00:00:00

abstract：:Neurons of the motor nerve net of the jellyfish Cyanea were impaled with microelectrodes for intracellular recordings. The cells have conventional, negative resting potentials and produce variable-amplitude action potentials with complex waveforms. The variability and complexity of these spikes is due to the superimpo...

journal_title：Journal of neurophysiology

authors： Anderson PA,Schwab WE

更新日期：1983-09-01 00:00:00

abstract：:We have characterized selectivity and sparseness in anterior inferotemporal cortex, using a large data set. Responses were collected from 674 monkey inferotemporal cells, each stimulated by 806 object photographs. This 806 × 674 matrix was examined in two ways: columnwise, looking at responses of a single neuron to al...

journal_title：Journal of neurophysiology

authors： Lehky SR,Kiani R,Esteky H,Tanaka K

更新日期：2011-09-01 00:00:00

abstract：:A description of healthy and pathological brain dynamics requires an understanding of spatiotemporal patterns of neural activity and characteristics of its propagation between interconnected circuits. However, the structure and modulation of the neural activation maps underlying these patterns and their propagation re...

journal_title：Journal of neurophysiology

authors： Hazra A,Rosenbaum R,Bodmann B,Cao S,Josić K,Žiburkus J

更新日期：2012-07-01 00:00:00

abstract：:A seizure-paralysis repertoire characteristic of Drosophila "bang-sensitive" mutants can be evoked electroconvulsively in tethered flies, in which behavioral episodes are associated with synchronized spike discharges in different body parts. Flight muscle DLMs (dorsal longitudinal muscles) display a stereotypic sequen...

journal_title：Journal of neurophysiology

authors： Lee J,Wu CF

更新日期：2006-11-01 00:00:00

abstract：:Dendritic voltage-dependent currents and inhibition modulate the information flow between synaptic and decision areas. Subthreshold and spike currents are sequentially recruited by synaptic potentials in the apical shaft of pyramidal cells, which may also decide cell output. We studied the global role of proximal apic...

journal_title：Journal of neurophysiology

authors： Canals S,López-Aguado L,Herreras O

更新日期：2005-02-01 00:00:00

abstract：:In primates, dorsolateral areas of the prefrontal cortex (PFC) play a major role in visuospatial working memory. To examine the functional organization of the PFC for representing visuospatial working memory, we produced reversible local inactivation, with the local injection of muscimol (5 microg, 1 microl), at vario...

journal_title：Journal of neurophysiology

authors： Sawaguchi T,Iba M

更新日期：2001-10-01 00:00:00

abstract：:1. The onset of visual activity in the superficial layers of the cat superior colliculus begins abruptly at about 6 days postnatal (DPN), just before natural eye opening. Despite the presence of many inactive sites at this time, the systematic nature of the superior colliculus visuotopy is already evident. The number ...

journal_title：Journal of neurophysiology

authors： Kao CQ,McHaffie JG,Meredith MA,Stein BE

更新日期：1994-07-01 00:00:00

abstract：:1. The tension produced by the combined stimulation of two to four single motor units of the cat tibialis posterior muscle was compared with the algebraic sum of the tensions produced by each individual motor unit. Comparisons were made under isometric conditions and during imposed changes in muscle length. 2. Under i...

journal_title：Journal of neurophysiology

authors： Powers RK,Binder MD

更新日期：1991-12-01 00:00:00

abstract：:Many laboratories have reported the successful regeneration of neurons across damaged portions of the spinal cord. Associated improvements in hindlimb locomotor movements have been attributed to the formation of functional neuronal connections with the locomotor central pattern generator (CPG). However, regenerating a...

journal_title：Journal of neurophysiology

authors： Yakovenko S,Kowalczewski J,Prochazka A

更新日期：2007-03-01 00:00:00

abstract：:1. Voltage-dependent K+ currents were studied in normal rat anterior pituitary cells using the patch-clamp technique. To obtain cultures enriched for lactotrophs, density gradient centrifugation was performed on pituitary cells isolated from lactating rats. 2. Depolarizations to about -30 mV from a holding potential o...

journal_title：Journal of neurophysiology

authors： Herrington J,Lingle CJ

更新日期：1994-08-01 00:00:00

abstract：:1. A quantitative analysis of facilitation during the kindling stimulation to the amygdala was conducted by measuring the area between the excitatory potential and the baseline in the averaged tetanic response recorded at the entorhinal cortex. The changes in facilitation were then compared with the development of ele...

journal_title：Journal of neurophysiology

authors： Matsuura S,Hirayama K,Murata R

更新日期：1993-08-01 00:00:00

abstract：:Experiments were performed on human elbow flexor and extensor muscles and jaw-opening and -closing muscles to observe the effect on rhythmic movements of sudden loading. The load was provided by an electromagnetic device, which simulated the appearance of a smoothly increasing spring-like load. The responses to this l...

journal_title：Journal of neurophysiology

authors： Abbink JH,van der Bilt A,Bosman F,van der Glas HW,Erkelens CJ,Klaassen MF

更新日期：1999-09-01 00:00:00