Deficits in anticipatory inhibition of postural muscle activity associated with load release while standing in individuals with spastic diplegic cerebral palsy.

abstract：:To investigate the dependence of velocity characteristics on spatiotemporal interactions the velocity selectivity of 15 geniculate and 72 cortical cells (areas 17 and 18) was examined with light and dark bars before and after masking all but the most sensitive part of the receptive field. The use of a 0.3 degree windo...

journal_title：Journal of neurophysiology

authors： Duysens J,Orban GA,Cremieux J

更新日期：1985-10-01 00:00:00

abstract：:Low-voltage-activated Ca(2+) currents (LVA-I(Ca)) are believed to perform several roles in neurons such as lowering the threshold for action potentials, promoting burst firing and oscillatory behavior, and enhancing synaptic excitation. They also may allow rapid increases in intracellular Ca(2+) concentration. We disc...

journal_title：Journal of neurophysiology

authors： Sekizawa SI,French AS,Torkkeli PH

更新日期：2000-02-01 00:00:00

abstract：:Using microstimulation to imprint meaningful activity patterns into intrinsically highly interconnected neuronal substrates is hampered by activation of fibers of passage leading to a spatiotemporal "blur" of activity. The focus of the present study was to characterize the shape of this blur in the neocortex to arrive...

journal_title：Journal of neurophysiology

authors： Butovas S,Schwarz C

更新日期：2003-11-01 00:00:00

abstract：:1. In the present three-part study electrophysiological techniques were used to characterize responses of afferent fibers in the rat hypogastric nerve to mechanical or chemical stimulation of the uterus, and anatomical techniques were used to identify the spinal segments through which uterine afferent fibers enter the...

journal_title：Journal of neurophysiology

authors： Berkley KJ,Robbins A,Sato Y

更新日期：1988-01-01 00:00:00

abstract：:The physiological basis of flexion spasms in individuals after spinal cord injury (SCI) may involve alterations in the properties of spinal neurons in the flexion reflex pathways. We hypothesize that these changes would be manifested as progressive increases in reflex response with repetitive stimulus application (i.e...

journal_title：Journal of neurophysiology

authors： Hornby TG,Rymer WZ,Benz EN,Schmit BD

更新日期：2003-01-01 00:00:00

abstract：:Alphabetagamma GABA(A) receptor currents are phasic and desensitizing, whereas alphabetadelta GABA(A) receptor currents are tonic and have no fast desensitization. alphabetagamma receptors are subsynaptic and mediate phasic inhibition, whereas alphabetadelta receptors are extra- or perisynaptic and mediate tonic inhib...

journal_title：Journal of neurophysiology

authors： Feng HJ,Macdonald RL

更新日期：2004-09-01 00:00:00

abstract：:Inner ear hair cell afferent fiber synapses are capable of transferring information at high rates for long periods of time with extraordinary fidelity. As at other sensory synapses, hair cells rely on graded receptor potentials and unique vesicle trafficking and release properties of ribbon synapses to relay intensity...

journal_title：Journal of neurophysiology

authors： Schnee ME,Castellano-Muñoz M,Ricci AJ

更新日期：2013-07-01 00:00:00

abstract：:Behavioral studies have shown that object recognition becomes severely impaired at fast presentation rates, indicating a limitation in temporal processing capacity. Here, we studied whether this behavioral limit in object recognition reflects limitations in the temporal processing capacity of early visual areas tuned ...

journal_title：Journal of neurophysiology

authors： McKeeff TJ,Remus DA,Tong F

更新日期：2007-07-01 00:00:00

abstract：:Ca2+ currents in dorsal unpaired median (DUM) neurons isolated from the fifth abdominal ganglion of the cockroach Periplaneta americana were investigated with the whole cell patch-clamp technique. On the basis of kinetic and pharmacological properties, two different Ca2+ currents were separated in these cells: mid/low...

journal_title：Journal of neurophysiology

authors： Wicher D,Penzlin H

更新日期：1997-01-01 00:00:00

abstract：:Ablation and single-unit studies in primates have shown that inferior temporal (IT) cortex is important for pattern discrimination. The first paper in this series suggested that single units in IT cortex of alert monkeys respond to a set of two-dimensional patterns with complex temporal modulation of their spike train...

journal_title：Journal of neurophysiology

authors： Optican LM,Richmond BJ

更新日期：1987-01-01 00:00:00

abstract：:1. Mouse hippocampal neurons in dissociated culture were grown at low density on previously plated hippocampal glial cell cultures and voltage clamped using the tight seal whole-cell patch-clamp technique. Flow pipes were used to rapidly exchange the extracellular solution, and to apply N-methyl-D-aspartic acid (NMDA)...

journal_title：Journal of neurophysiology

authors： Mayer ML,Westbrook GL,Vyklický L Jr

更新日期：1988-08-01 00:00:00

abstract：:A major goal of neuroscience is to understand the functions of networks of neurons in cognition and behavior. Recent work has focused on implanting arrays of ∼100 immovable electrodes or smaller numbers of individually adjustable electrodes, designed to target a few cortical areas. We have developed a recording system...

journal_title：Journal of neurophysiology

authors： Feingold J,Desrochers TM,Fujii N,Harlan R,Tierney PL,Shimazu H,Amemori K,Graybiel AM

更新日期：2012-04-01 00:00:00

abstract：:1. The present study was designed to determine the effects of microstimulation of the medullary reticular formation (MRF) on the locomotor activity of the cat in the absence of phasic afferent feedback from the limbs. To this end, both short (33 ms) and long (200 ms) trains of stimuli (trains of 0.2-ms pulses at 330 H...

journal_title：Journal of neurophysiology

authors： Perreault MC,Rossignol S,Drew T

更新日期：1994-01-01 00:00:00

abstract：:Previous studies have described maturational changes in GABAergic inhibitory synaptic transmission in the rodent somatosensory cortex during the early postnatal period. To determine whether alterations in the functional properties of synaptically localized GABA(A) receptors (GABA(A)Rs) contribute to development of inh...

journal_title：Journal of neurophysiology

authors： Dunning DD,Hoover CL,Soltesz I,Smith MA,O'Dowd DK

更新日期：1999-12-01 00:00:00

abstract：:1. The discharges from individual Golgi tendon organs of peroneus tertius and brevis muscles were recorded in anesthetized cats. Responses to unfused isometric contractions of single motor units and combinations of motor units were compared with responses to contractions eliciting muscle shortening (i.e., shortening c...

journal_title：Journal of neurophysiology

authors： Horcholle-Bossavit G,Jami L,Petit J,Vejsada R,Zytnicki D

更新日期：1988-05-01 00:00:00

abstract：:The responses of low-frequency, primary-like neurons of the ventral cochlear nucleus were measured as a function of signal-to-noise ratio for gated tonal signals and noise maskers that were varied in bandwidth and duration. For a given signal-to-noise ratio, each of the maskers is known to produce the same amount of m...

journal_title：Journal of neurophysiology

authors： Langford TL

更新日期：1983-12-01 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：:1. The goal of this study was to compare the relative effectiveness of intrinsic inhibitory synaptic inputs in different layers of the cat motor cortex. Postsynaptic potentials (PSPs) were evoked in neurons located in the superficial (layer II-III) or deep layers (layer V) by local extracellular stimulation in vitro. ...

journal_title：Journal of neurophysiology

authors： van Brederode JF,Spain WJ

更新日期：1995-09-01 00:00:00

abstract：:1. "Unmasking" of weak synaptic connections has been suggested as a mechanism for the early changes in cortical topographic maps that follow alterations of sensory activity. For such a mechanism to operate, convergent sensory inputs must already exist in the normal cortex. 2. We tested for topographic and cross-modali...

journal_title：Journal of neurophysiology

authors： Smits E,Gordon DC,Witte S,Rasmusson DD,Zarzecki P

更新日期：1991-09-01 00:00:00

abstract：:The location of the human nociceptive area(s) near the Sylvian fissure is still controversial in spite of evidence from imaging and evoked potential studies that noxious heat stimuli activate somatosensory areas in that region. Some studies have suggested the secondary somatosensory cortex (SII) on the upper bank of t...

journal_title：Journal of neurophysiology

authors： Vogel H,Port JD,Lenz FA,Solaiyappan M,Krauss G,Treede RD

更新日期：2003-06-01 00:00:00

abstract：:Spontaneous calcium oscillations in mushroom bodies of late stage pupal and adult Drosophila brains have been implicated in memory consolidation during olfactory associative learning. This study explores the cellular mechanisms regulating calcium dynamics in Kenyon cells, principal neurons in mushroom bodies. Fura-2 i...

journal_title：Journal of neurophysiology

authors： Jiang SA,Campusano JM,Su H,O'Dowd DK

更新日期：2005-07-01 00:00:00

abstract：:Fast inhibitory synaptic transmission in the medial vestibular nucleus (MVN) is mediated by GABA(A) receptors (GABA(A)Rs) and glycine receptors (GlyRs). To assess their relative contribution to inhibition in the MVN, we recorded miniature inhibitory postsynaptic currents (mIPSCs) in physiologically characterized type ...

journal_title：Journal of neurophysiology

authors： Camp AJ,Callister RJ,Brichta AM

更新日期：2006-05-01 00:00:00

abstract：:Paw-shake responses (PSRs) were evoked by wrapping masking tape around the hind-paw in nine cats spinalized at the T12 level either at 2 or 12 wk of age or as young adults (10-12 mo). Electromyographic responses of ankle extensors (LG and SOL) and one ankle flexor (TA) were recorded through the 6th mo after cord trans...

journal_title：Journal of neurophysiology

authors： Sabin C,Smith JL

更新日期：1984-04-01 00:00:00

abstract：:Previous experimental results from our laboratory demonstrated that monocyte chemoattractant protein-1 (MCP-1) depolarizes or increases the excitability of nociceptive neurons in the intact dorsal root ganglion (DRG) after a chronic compression of the DRG (CCD), an injury that upregulates neuronal expression of both M...

journal_title：Journal of neurophysiology

authors： Sun JH,Yang B,Donnelly DF,Ma C,LaMotte RH

更新日期：2006-11-01 00:00:00

abstract：:The amygdala plays a crucial role in evaluating the emotional significance of stimuli and in transforming the results of this evaluation into appropriate autonomic responses. Lesion and stimulation studies suggest involvement of the amygdala in the generation of the skin conductance response (SCR), which is an indirec...

journal_title：Journal of neurophysiology

authors： Laine CM,Spitler KM,Mosher CP,Gothard KM

更新日期：2009-04-01 00:00:00

abstract：:The activity of malic dehydrogenase, pyruvic kinase, and phosphorylase b was measured in the geniohyoid muscle of the cat after injection of 10 10 mM colchicine into the hypoglossal nerve. Experiments performed 1-60 days after the injection showed that the activity of the three enzymes gradually decreased (day 4-5), r...

journal_title：Journal of neurophysiology

authors： Inestrosa NC,Fernandez HL

更新日期：1976-11-01 00:00:00

abstract：:1. Using an optical method for measuring membrane potential, we have been able to monitor action-potential activity simultaneously in 14 neurons of the supraesophageal ganglion of the barnacle. 2. Under favorable conditions, 4-mV synaptic potentials could also be detected optically. ...

journal_title：Journal of neurophysiology

authors： Salzberg BM,Grinvald A,Cohen LB,Davila HV,Ross WN

更新日期：1977-11-01 00:00:00

abstract：:Responses to tones, clicks, and noise were recorded from chinchilla auditory-nerve fibers (ANFs). The responses to noise were analyzed by computing the zeroth-, first-, and second-order Wiener kernels (h0, h1, and h2). The h1s correctly predicted the frequency tuning and phases of responses to tones of ANFs with low c...

journal_title：Journal of neurophysiology

authors： Temchin AN,Recio-Spinoso A,van Dijk P,Ruggero MA

更新日期：2005-06-01 00:00:00

abstract：:1. Neurons (n = 142) were recorded with extracellular micropipettes in the parabrachial (PB) area, in the anesthetized rat, some of them being antidromically driven from the centralis nucleus of the amygdala (Ce). The spontaneous activity of these neurons was low, (10th percentile < median frequency < 90th percentile;...

journal_title：Journal of neurophysiology

authors： Bernard JF,Huang GF,Besson JM

更新日期：1994-05-01 00:00:00

abstract：:Coherence analysis has the ability to identify the presence of common descending drive shared by motor unit pools and reveals its spectral properties. However, the link between spectral properties of shared neural drive and functional interactions among muscles remains unclear. We assessed shared neural drive between ...

journal_title：Journal of neurophysiology

authors： Laine CM,Valero-Cuevas FJ

更新日期：2017-09-01 00:00:00