Discharge characteristics of biceps brachii motor units at recruitment when older adults sustained an isometric contraction.

abstract：:A mathematical model is developed for simulation of action potential propagation through a single branch point of a myelinated nerve fiber with a parent branch bifurcating into two identical daughter branches. This model is based on a previously published multi-layer compartmental model for single unbranched myelinate...

journal_title：Journal of neurophysiology

authors： Zhou L,Chiu SY

更新日期：2001-01-01 00:00:00

abstract：:Humans and animals value the opportunity to choose by preferring alternatives that offer more rather than fewer choices. This preference for choice may arise not only from an increased probability of obtaining preferred outcomes but also from the freedom it provides. We used human neuroimaging to investigate the neura...

journal_title：Journal of neurophysiology

authors： Fujiwara J,Usui N,Park SQ,Williams T,Iijima T,Taira M,Tsutsui K,Tobler PN

更新日期：2013-10-01 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：:Amino acid and bile salt odorants are detected by zebrafish with relatively independent odorant receptors, but the transduction cascade(s) subsequently activated by these odorants remains unknown. Electro-olfactogram recording methods were used to determine the effects of two drugs, reported to affect phospholipase C ...

journal_title：Journal of neurophysiology

authors： Ma L,Michel WC

更新日期：1998-03-01 00:00:00

abstract：:The deep piriform region has an unusually high seizure susceptibility. Voltage imaging previously located the sites of epileptiform discharge onset in slices of rat piriform cortex and revealed the spatiotemporal pattern of development of two types of electrical activity during the latent period prior to discharge ons...

journal_title：Journal of neurophysiology

authors： Demir R,Haberly LB,Jackson MB

更新日期：2000-02-01 00:00:00

abstract：:1. The responses of onset units in the cochlear nucleus of the anesthetized guinea pig have been measured to single tones, two-tone complexes, and broadband noise (BBN; 20-kHz bandwidth). The onset units were subdivided into three groups, onset-I (OnI), onset-L (OnL), and onset-C (OnC), on the basis of a decision tree...

journal_title：Journal of neurophysiology

authors： Winter IM,Palmer AR

更新日期：1995-01-01 00:00:00

abstract：:Here we show that inhibition shapes diverse responses to species-specific calls in the inferior colliculus (IC) of Mexican free-tailed bats. We presented 10 calls to each neuron of which 8 were social communication and 2 were echolocation calls. We also measured excitatory response regions: the range of tone burst fre...

journal_title：Journal of neurophysiology

authors： Klug A,Bauer EE,Hanson JT,Hurley L,Meitzen J,Pollak GD

更新日期：2002-10-01 00:00:00

abstract：:In developing ciliary ganglion (CG) neurons, movement of functional large-conductance (BK type) Ca(2+)-activated K+ (K(Ca)) channels to the cell surface is stimulated by the endogenous growth factors TGF(beta)1 and beta-neuregulin-1 (NRG1). Here we show that a brief NRG1 treatment (0.5-1.5 h) mobilizes K(Ca) channels ...

journal_title：Journal of neurophysiology

authors： Chae KS,Oh KS,Dryer SE

更新日期：2005-08-01 00:00:00

abstract：:Membrane-permeable arachidonic acid (AA) is liberated in a Ca2+-dependent way inside cells. By using whole cell patch clamp we show that intracellular AA (1 pM) selectively reduces IA in rat hippocampal neurons, whereas extracellular application requires a 10(6)-fold concentration. The nonmetabolized AA analogue ETYA ...

journal_title：Journal of neurophysiology

authors： Bittner K,Müller W

更新日期：1999-07-01 00:00:00

abstract：:1. Several heart interneurons (HN cells) of the leech nerve cord have impulse-initiation sites in every segmental ganglion through which their single axons pass. All these initiation sites are capable of producing rhythmic impulse bursts. However, under normal conditions a dominant primary initiation site in the gangl...

journal_title：Journal of neurophysiology

authors： Calabrese RL

更新日期：1980-11-01 00:00:00

abstract：:1. Single-unit and multiunit activities were recorded at the area 17-18 border of each cortical hemisphere in paralyzed cats anesthetized with nitrous oxide supplemented with halothane. Cross-correlation histograms (CCHs) were computed between 86 pairs of single units and 99 pairs of multiunit activities. Visually evo...

journal_title：Journal of neurophysiology

authors： Nowak LG,Munk MH,Nelson JI,James AC,Bullier J

更新日期：1995-12-01 00:00:00

abstract：:1. Intracellular recordings were made from neurons of the basolateral amygdala (BLA) in in vitro slice preparations to determine long-term differences in metabotropic glutamate receptor (mGluR) agonist-induced membrane responses in control and amygdala-kindled rats. 2. (2S,3S,4S)-alpha-(carboxycyclopropyl)glycine-1 (L...

journal_title：Journal of neurophysiology

authors： Holmes KH,Keele NB,Shinnick-Gallagher P

更新日期：1996-10-01 00:00:00

abstract：:Multiple studies have demonstrated that brain-derived neurotrophic factor (BDNF) is a potent modulator of neuronal structure and function in the hippocampus. However, the majority of studies to date have relied on the application of recombinant BDNF. We herein report that endogenous BDNF, released via theta burst stim...

journal_title：Journal of neurophysiology

authors： Li Y,Calfa G,Inoue T,Amaral MD,Pozzo-Miller L

更新日期：2010-05-01 00:00:00

abstract：:In the present study, we sought to unravel how exploratory movements affect length perception of rods that are held in and wielded by hand. We manipulated the mechanical rod properties--mass (m), first moment of mass distribution (M), major principal moment of inertia (I(1))--individually, allowing us to assess the re...

journal_title：Journal of neurophysiology

authors： Debats NB,van de Langenberg RW,Kingma I,Smeets JB,Beek PJ

更新日期：2010-11-01 00:00:00

abstract：:Older adults are at a high risk of falls, and most falls occur during locomotor activities like walking. This study aimed to improve our understanding of changes in neuromuscular control associated with increased risk of falls in older adults in the presence of dynamic balance challenges during walking. Motor module (...

journal_title：Journal of neurophysiology

authors： Allen JL,Franz JR

更新日期：2018-11-01 00:00:00

abstract：:Membrane retrieval following exocytosis in synaptic terminals is fast and compensatory, however, little is known about the factors that regulate or contribute to this special form of endocytosis. We used whole-terminal capacitance measurements to examine the effect of hydrostatic pressure on compensatory endocytosis i...

journal_title：Journal of neurophysiology

authors： Heidelberger R,Zhou ZY,Matthews G

更新日期：2002-11-01 00:00:00

abstract：:The somatosensory temporal discrimination threshold (STDT) has been used in recent years to investigate time processing of sensory information, but little is known about the physiological correlates of somatosensory temporal discrimination. The objective of this study was to investigate whether the time interval requi...

journal_title：Journal of neurophysiology

authors： Leodori G,Formica A,Zhu X,Conte A,Belvisi D,Cruccu G,Hallett M,Berardelli A

更新日期：2017-10-01 00:00:00

abstract：:The nucleus tractus solitarii (nTS) is the initial central termination site for visceral afferents and is important for modulation and integration of multiple reflexes including cardiorespiratory reflexes. Glutamate is the primary excitatory neurotransmitter in the nTS and is removed from the extracellular milieu by e...

journal_title：Journal of neurophysiology

authors： Matott MP,Ruyle BC,Hasser EM,Kline DD

更新日期：2016-03-01 00:00:00

abstract：:Generalization is a fundamental aspect of behavior, allowing for the transfer of knowledge from one context to another. The details of this transfer are thought to reveal how the brain represents what it learns. Generalization has been a central focus in studies of sensorimotor adaptation, and its pattern has been wel...

journal_title：Journal of neurophysiology

authors： McDougle SD,Bond KM,Taylor JA

更新日期：2017-07-01 00:00:00

abstract：:1. Using patch-clamp recordings, expression of voltage-activated ion channels by identified glial cells in situ was studied in hippocampal slices derived from 5- to 24-day-old rats. Glial cells were filled with Lucifer yellow during recording, and were identified by staining for glial fibrillary acidic protein (GFAP)....

journal_title：Journal of neurophysiology

authors： Sontheimer H,Waxman SG

更新日期：1993-11-01 00:00:00

abstract：:Fear conditioning studies have led to the view that the amygdala contains neurons that signal threat and in turn elicit defensive behaviors through their brain stem and hypothalamic targets. In agreement with this model, a prior unit-recording study in rats performing a seminaturalistic foraging task revealed that man...

journal_title：Journal of neurophysiology

authors： Amir A,Kyriazi P,Lee SC,Headley DB,Paré D

更新日期：2019-05-01 00:00:00

abstract：:To investigate the specificity of fusimotor (gamma) drive during locomotion, gamma-efferents were recorded from the flexor digitorum longus (FDL) and flexor hallucis longus (FHL) nerves in a decerebrate cat preparation. These nerves innervate hindlimb muscles that differ in some aspects of their mechanical action. For...

journal_title：Journal of neurophysiology

authors： Murphy PR

更新日期：2002-01-01 00:00:00

abstract：:In the ventral tegmental area (VTA), interactions between dopamine (DA) and γ-aminobutyric acid (GABA) neurons are critical for regulating DA neuron activity and thus DA efflux. To provide a mechanistic explanation of how GABA neurons influence DA neuron firing, we developed a circuit model of the VTA. The model is ba...

journal_title：Journal of neurophysiology

authors： Morozova EO,Myroshnychenko M,Zakharov D,di Volo M,Gutkin B,Lapish CC,Kuznetsov A

更新日期：2016-10-01 00:00:00

abstract：:Few studies have analyzed activity-induced changes in EMG activity in individual human motor units. We studied the changes in human thenar motor unit EMG that accompany the potentiation of twitch force and fatigue of tetanic force. Single motor unit EMG and force were recorded in healthy subjects in response to select...

journal_title：Journal of neurophysiology

authors： Thomas CK,Johansson RS,Bigland-Ritchie B

更新日期：2006-03-01 00:00:00

abstract：:Saccade adaptation is a mechanism that adjusts saccade landing positions if they systematically fail to reach their intended target. In the laboratory, saccades can be shortened or lengthened if the saccade target is displaced during execution of the saccade. In this study, saccades were performed from different posit...

journal_title：Journal of neurophysiology

authors： Zimmermann E

更新日期：2013-04-01 00:00:00

abstract：:1. Reflex responses were elicited in muscles that act at the ankle by electrical stimulation of low-threshold afferents from the foot in human subjects who were reclining supine. During steady voluntary contractions, stimulus trains (5 pulses at 300 Hz) were delivered at two intensities to the sural nerve (1.2-4.0 tim...

journal_title：Journal of neurophysiology

authors： Aniss AM,Gandevia SC,Burke D

更新日期：1992-05-01 00:00:00

abstract：:The extracellular pH of living tissue in the retina and elsewhere in the brain is lower than the pH of the surrounding milieu. We have shown that the pH gradient between the in vitro retina and the superfusion solution is regulated by a circadian (24-h) clock so that it is smaller in the subjective day than in the sub...

journal_title：Journal of neurophysiology

authors： Dmitriev AV,Mangel SC

更新日期：2004-06-01 00:00:00

abstract：:Glycinergic and GABAergic inhibition are juxtaposed at one retinal synaptic layer yet likely perform different functions. These functions have usually been evaluated using receptor antagonists. In examining retinal glycine receptors, we were surprised to find that commonly used concentrations of GABA antagonists block...

journal_title：Journal of neurophysiology

authors： Wang P,Slaughter MM

更新日期：2005-06-01 00:00:00

abstract：:The corticotectal influences of somatosensory cortex were investigated by using reversible deactivation of cortex by cooling. More than half of the somatosensory superior colliculus (SC) cells studied exhibited a response depression (often not apparent qualitatively) or an elimination of responses to somatosensory sti...

journal_title：Journal of neurophysiology

authors： Clemo HR,Stein BE

更新日期：1986-06-01 00:00:00

abstract：:The nucleus of the solitary tract (NST) and the parabrachial nuclei (PbN) are the first and second relays in the rodent central taste pathway. A series of electrophysiological experiments revealed that spontaneous and taste-evoked activities of brain stem gustatory neurons are altered by descending input from multiple...

journal_title：Journal of neurophysiology

authors： Li CS,Lu DP,Cho YK

更新日期：2015-06-01 00:00:00