Neuromuscular abnormalities associated with spasticity of upper extremity muscles in hemiparetic stroke.

abstract：:The neocortex generates short epochs of persistent activity called up states, which are associated with changes in cellular and network excitability. Using somatosensory thalamocortical slices, we studied the impact of persistent cortical activity during spontaneous up states on intrinsic cellular excitability (input ...

journal_title：Journal of neurophysiology

authors： Rigas P,Castro-Alamancos MA

更新日期：2009-07-01 00:00:00

abstract：:For human locomotion, varying environments require adjustments of the motor system. We asked whether age affects gait balance recovery adaptation, its retention over months, and the transfer of adaptation to an untrained reactive balance task. Healthy adults (26 young, 27 middle-aged, and 25 older; average ages 24, 52...

journal_title：Journal of neurophysiology

authors： König M,Epro G,Seeley J,Potthast W,Karamanidis K

更新日期：2019-11-01 00:00:00

abstract：:The cannabinoid receptor CB1 is found in abundance in brain neurons, whereas CB2 is essentially expressed outside the brain. In the neocortex, CB1 is observed predominantly on large cholecystokinin (CCK)-expressing interneurons. However, physiological evidence suggests that functional CB1 are present on other neocorti...

journal_title：Journal of neurophysiology

authors： Hill EL,Gallopin T,Férézou I,Cauli B,Rossier J,Schweitzer P,Lambolez B

更新日期：2007-04-01 00:00:00

abstract：:Rats typically employ 4- to 12-Hz "whisking" movements of their vibrissae during tactile exploration. The intentional sampling of signals in this frequency range suggests that neural processing of tactile information may be differentially engaged in this bandwidth. We examined action potential responses in rat primary...

journal_title：Journal of neurophysiology

authors： Garabedian CE,Jones SR,Merzenich MM,Dale A,Moore CI

更新日期：2003-09-01 00:00:00

abstract：:Norepinephrine (NE) is a potent modulator of breathing that can increase/decrease respiratory activity by α1-/α2-adrenergic receptor (AR) activation, respectively. The retrotrapezoid nucleus (RTN) is known to contribute to central chemoreception, inspiration, and active expiration. Here we investigate the sources of c...

journal_title：Journal of neurophysiology

authors： Oliveira LM,Moreira TS,Kuo FS,Mulkey DK,Takakura AC

更新日期：2016-09-01 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：:Single-unit electrical activity has been recorded from 122 viscerosomatic neurons in the T9 and T11 segments of the cat's spinal cord. These neurons were excited by electrical and/or natural stimulation of visceral and somatic afferent fibers. The majority of viscerosomatic neurons (72%) received somatic nociceptive i...

journal_title：Journal of neurophysiology

authors： Tattersall JE,Cervero F,Lumb BM

更新日期：1986-09-01 00:00:00

abstract：:The generation of a behaviorally relevant cue to the speed of objects around us is critical to our ability to navigate safely within our environment. However, our perception of speed is often distorted by prevailing conditions. For instance, as luminance is reduced, our perception of the speed of fast-moving patterns ...

journal_title：Journal of neurophysiology

authors： Hammett ST,Smith AT,Wall MB,Larsson J

更新日期：2013-08-01 00:00:00

abstract：:Trace eyeblink classical conditioning (tEBCC) can be accelerated by making training trials contingent on the naturally generated hippocampal 3- to 7-Hz theta rhythm. However, it is not well-understood how the presence (or absence) of theta affects stimulus-driven changes within the hippocampus and how it correlates wi...

journal_title：Journal of neurophysiology

authors： Darling RD,Takatsuki K,Griffin AL,Berry SD

更新日期：2011-05-01 00:00:00

abstract：:In common with other sensory cortices, the mammalian primary auditory cortex (AI) demonstrates the capacity for large-scale reorganization following many experimental situations. For example, training animals in frequency-discrimination tasks has been shown to result in an increase in cortical frequency representation...

journal_title：Journal of neurophysiology

authors： Talwar SK,Gerstein GL

更新日期：2001-10-01 00:00:00

abstract：:1. Intracellular recordings from neostriatal neurons in an in vitro slice preparation of the rat brain were used to analyze the pharmacological sensitivity of the action potential (AP) repolarization and the afterhyperpolarization (AHP) that follows a single action potential. The interspike voltage trajectory and the ...

journal_title：Journal of neurophysiology

authors： Pineda JC,Galarraga E,Bargas J,Cristancho M,Aceves J

更新日期：1992-07-01 00:00:00

abstract：:Sensorineural hearing loss during early childhood alters auditory cortical evoked potentials in humans and profoundly changes auditory processing in hearing-impaired animals. Multiple mechanisms underlie the early postnatal establishment of cortical circuits, but one important set of developmental mechanisms relies on...

journal_title：Journal of neurophysiology

authors： Rao D,Basura GJ,Roche J,Daniels S,Mancilla JG,Manis PB

更新日期：2010-11-01 00:00:00

abstract：:1. Taste buds in catfish are found not only within the oropharyngeal cavity, as in mammals, but are also located along the external body surface of the animal from the barbels and lips to the caudal fin. Because these taste buds are innervated by the facial (cranial VII) nerve, the extraoral taste system of catfish is...

journal_title：Journal of neurophysiology

authors： Michel W,Caprio J

更新日期：1991-07-01 00:00:00

abstract：:Previous studies have reported an important relationship between increasing age, vestibular impairment, and increased risk of falls. Recently, noisy galvanic vestibular stimulation (nGVS) has been shown to improve postural control in older adults during and potentially following stimulation. However, this effect of nG...

journal_title：Journal of neurophysiology

authors： Nooristani M,Bigras C,Lafontaine L,Bacon BA,Maheu M,Champoux F

更新日期：2020-12-09 00:00:00

abstract：:1. Adaptation and disadaptation rates determine the temporal response properties of sensory receptor cells. In chemoreception, temporal filter properties of receptor cells are poorly understood. We studied the time course of disadaptation in lobster antennular chemoreceptor cells by using in situ high-resolution stimu...

journal_title：Journal of neurophysiology

authors： Gomez G,Atema J

更新日期：1996-08-01 00:00:00

abstract：:Beyond being essential for long-term motor-skill development, movement repetition has immediate benefits on performance, increasing speed and accuracy of a second execution. While repetition effects have been reported for single reaching movements, it has yet to be determined whether they also occur for movement seque...

journal_title：Journal of neurophysiology

authors： Ariani G,Kwon YH,Diedrichsen J

更新日期：2020-05-01 00:00:00

abstract：:Unitary excitatory (EPSP) and inhibitory (IPSP) postsynaptic potentials (PSPs) were evoked between neurons in Rexed's laminae (L)II-V of spinal slices from young hamsters (7-24 days old) at 27°C using paired whole cell recordings. Laminar differences in synaptic efficacy were observed: excitatory connections were more...

journal_title：Journal of neurophysiology

authors： Zhang W,Schneider SP

更新日期：2011-06-01 00:00:00

abstract：:The possibility of using randomly generated stimulus intervals (with a Poisson distribution) to identify the type(s) of intrafusal fiber activated by the stimulation of single static gamma axons was tested in Peroneus tertius muscle spindles of anesthetized cats. Three patterns of random stimulation with different val...

journal_title：Journal of neurophysiology

authors： Petit J,Banks RW,Laporte Y

更新日期：1999-06-01 00:00:00

abstract：:Using near-infrared spectroscopy (NIRS) and multichannel probes, we studied hemoglobin (Hb) concentration changes when single-pulse transcranial magnetic stimulation (TMS) was applied over the left hemisphere primary motor cortex (M1). Seventeen measurement probes were centered over left M1. Subjects were studied in b...

journal_title：Journal of neurophysiology

authors： Furubayashi T,Mochizuki H,Terao Y,Arai N,Hanajima R,Hamada M,Matsumoto H,Nakatani-Enomoto S,Okabe S,Yugeta A,Inomata-Terada S,Ugawa Y

更新日期：2013-03-01 00:00:00

abstract：:Voltage-activated currents in blue cones of the retinal slice of zebrafish were characterized using whole cell recording techniques. Depolarizing-elicited currents were recorded: an outward tetraethylammonium (TEA)-sensitive K+ current (IKx), an outward Ca(2+)-activated Cl- current (ICl(Ca)), from which we inferred an...

journal_title：Journal of neurophysiology

authors： Fan SF,Yazulla S

更新日期：1997-03-01 00:00:00

abstract：:1. Locusts use a distinctive motor pattern to extend the tibia of a hind leg rapidly in a defensive kick, or to extend the tibiae of both hind legs in a jump. The force for the movement is generated by an almost isometric co-contraction of the extensor and flexor tibiae muscles followed by a sudden release of the stor...

journal_title：Journal of neurophysiology

authors： Hedwig B,Burrows M

更新日期：1996-03-01 00:00:00

abstract：:Motor-unit synchronization, which is a measure of the near simultaneous discharge of action potentials by motor units, has the potential to influence spike-triggered average force and the steadiness of a low-force isometric contraction. The purpose of the study was to estimate the contribution of motor-unit synchroniz...

journal_title：Journal of neurophysiology

authors： Semmler JG,Steege JW,Kornatz KW,Enoka RM

更新日期：2000-07-01 00:00:00

abstract：:1. One hundred seventy-nine single units were studied in the superior colliculus of seven Dutch-belted rabbits following ablation of the ipsilateral visual cortex. The response characteristics of these units were compared with those of 284 single units recorded from the superior colliculus of 20 intact animals. 2. In ...

journal_title：Journal of neurophysiology

authors： Graham J,Berman N,Murphy EH

更新日期：1982-02-01 00:00:00

abstract：:Humans maneuver easily over uneven terrain. To maintain smooth and efficient gait the motor system needs to adapt the locomotor output to the walking environment. In the present study we investigate the role of sensory feedback in adjusting the soleus muscle activity during overground walking in 19 healthy volunteers....

journal_title：Journal of neurophysiology

authors： Af Klint R,Nielsen JB,Sinkjaer T,Grey MJ

更新日期：2009-04-01 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：:The mechanism(s) of olfactory transduction in invertebrates remains to be fully understood. In lobster olfactory receptor neurons (ORNs), a nonselective sodium-gated cation (SGC) channel, a presumptive transient receptor potential (TRP)C channel homolog, plays a crucial role in olfactory transduction, at least in part...

journal_title：Journal of neurophysiology

authors： Pezier A,Bobkov YV,Ache BW

更新日期：2009-03-01 00:00:00

abstract：:We compared electroretinographic (ERG) responses to uniform-field and a variety of pattern stimuli using both transient and steady-state analyses. Evidence is provided that for all of these stimuli, the peak at high temporal frequencies in the steady-state response corresponds to the fast wave of the transient respons...

journal_title：Journal of neurophysiology

authors： Baker CL Jr,Hess RF

更新日期：1984-05-01 00:00:00

abstract：:1. To characterize the temporal dynamic responses of ganglion cells and to define the possible inputs giving rise to their responses in catfish retina, we recorded the ganglion cell responses evoked by 1) a step of light presented in the dark, 2) an incremental and decremental step from a background illumination, and ...

journal_title：Journal of neurophysiology

authors： Sakai HM,Naka K

更新日期：1987-12-01 00:00:00

abstract：:Damage to the peripheral vestibular system can result in debilitating postural, perceptual, and visual symptoms. A potential new treatment for this clinical problem is to replace some aspects of peripheral vestibular function with an implant that senses head motion and provides this information to the brain by stimula...

journal_title：Journal of neurophysiology

authors： Lewis RF

更新日期：2016-12-01 00:00:00

abstract：:A previous neurophysiological investigation demonstrated an increase in functional projections of expiratory bulbospinal neurons (EBSNs) in the segment above a chronic lateral thoracic spinal cord lesion that severed their axons. We have now investigated how this plasticity might be manifested in thoracic motoneurons ...

journal_title：Journal of neurophysiology

authors： Ford TW,Anissimova NP,Meehan CF,Kirkwood PA

更新日期：2016-01-01 00:00:00