Connections of midbrain periaqueductal gray in the monkey. I. Ascending efferent projections.

abstract：:Synaptic drugs were superfused into turtle eyecup preparation while recording extracellularly from directionally sensitive (DS) retinal ganglion cells. As in previous experiments in intact rabbit retina, both picrotoxin (a GABA antagonist) and physostigmine [an acetylcholine (ACh) potentiator] reduced or eliminated th...

journal_title：Journal of neurophysiology

authors： Ariel M,Adolph AR

更新日期：1985-11-01 00:00:00

abstract：:Recent advances in recording and computing hardware have enabled laboratories to record the electrical activity of multiple brain regions simultaneously. Lagging behind these technical advances, however, are the methods needed to rapidly produce microdrives and head-caps that can flexibly accommodate different recordi...

journal_title：Journal of neurophysiology

authors： Headley DB,DeLucca MV,Haufler D,Paré D

更新日期：2015-04-01 00:00:00

abstract：:A desirable goal of functional MRI (fMRI), both clinically and for basic research, is to produce detailed maps of cortical function in individual subjects. Single-subject mapping of the somatotopic hand representation in the human primary somatosensory cortex (S1) has been performed using both phase-encoding and block...

journal_title：Journal of neurophysiology

authors： Besle J,Sánchez-Panchuelo RM,Bowtell R,Francis S,Schluppeck D

更新日期：2013-05-01 00:00:00

abstract：:Although it is generally accepted that humans cannot perceive sounds in the frequency range above 20 kHz, the question of whether the existence of such "inaudible" high-frequency components may affect the acoustic perception of audible sounds remains unanswered. In this study, we used noninvasive physiological measure...

journal_title：Journal of neurophysiology

authors： Oohashi T,Nishina E,Honda M,Yonekura Y,Fuwamoto Y,Kawai N,Maekawa T,Nakamura S,Fukuyama H,Shibasaki H

更新日期：2000-06-01 00:00:00

abstract：:1. The effects of dopamine on the slow Ca(2+)-dependent K+ current (IAHP; AHP, afterhyperpolarization) and spike frequency adaptation were studied by whole cell voltage-clamp and sharp microelectrode current-clamp recordings in rat CA1 pyramidal neurons in rat hippocampal slices. 2. Dopamine suppressed IAHP in a dose-...

journal_title：Journal of neurophysiology

authors： Pedarzani P,Storm JF

更新日期：1995-12-01 00:00:00

abstract：:Following stepping in-place on the surface of a rotating circular treadmill, a subject attempting to step in-place or walk in a straight line across the floor without vision will rotate relative to space. This adaptation, termed podokinetic after-rotation (PKAR), transfers to backward walking following forward walking...

journal_title：Journal of neurophysiology

authors： Earhart GM,Melvill Jones G,Horak FB,Block EW,Weber KD,Fletcher WA

更新日期：2002-02-01 00:00:00

abstract：:The ability of individuals to adapt locomotion to constraints associated with the complex environments normally encountered in everyday life is paramount for survival. Here, we tested the ability of 24 healthy young adults to adapt to a rightward prism shift (∼11.3°) while either walking and stepping to targets (i.e.,...

journal_title：Journal of neurophysiology

authors： Alexander MS,Flodin BW,Marigold DS

更新日期：2011-08-01 00:00:00

abstract：:Neuromuscular synapses in buccal muscle I3a of Aplysia are modulated by the small cardioactive peptide (SCP), a peptide cotransmitter that is intrinsic to the motor neurons, and by serotonin (5-HT) released from modulatory neurons that are extrinsic to the motor circuit. Although the modulation of excitatory junction ...

journal_title：Journal of neurophysiology

authors： Fox LE,Lloyd PE

更新日期：2000-03-01 00:00:00

abstract：:The primary motor cortex (MI) commands motor output after kinematics are planned from goals, thought to occur in a larger premotor network. However, there is a growing body of evidence that MI is involved in processes beyond action generation, and neuronal subpopulations may perform computations related to cue-to-acti...

journal_title：Journal of neurophysiology

authors： Rao NG,Donoghue JP

更新日期：2014-01-01 00:00:00

abstract：:Exposure to odorants results in a rapid (<10 s) reduction in odor-evoked activity in the rat piriform cortex despite relatively maintained afferent input from olfactory bulb mitral cells. To further understand this form of cortical plasticity, a detailed analysis of its odor specificity was performed. Habituation of o...

journal_title：Journal of neurophysiology

authors： Wilson DA

更新日期：2000-01-01 00:00:00

abstract：:1. Microelectrodes filled with horseradish peroxidase (HRP) were inserted in the superior colliculus (SC) of alert squirrel monkeys. Spontaneous eye movements were monitored in the dark during recording and intraaxonal injection of fibers carrying presaccadic signals. 2. Analysis of the relationship between neuronal a...

journal_title：Journal of neurophysiology

authors： Moschovakis AK,Karabelas AB,Highstein SM

更新日期：1988-07-01 00:00:00

abstract：:The grip force applied to maintain grasp of a handheld object has been typically reported as tightly coupled to the load force exerted by the object as it is actively manipulated, occurring proportionally and consistently in phase with changes in load force. However, continuous grip force-load force coupling breaks do...

journal_title：Journal of neurophysiology

authors： Grover FM,Schwab SM,Silva PL,Lorenz T,Riley MA

更新日期：2019-12-01 00:00:00

abstract：:1. The actions of hydrogen sulfide (HS-) on membrane and synaptic properties of dorsal raphe (DR) serotonergic cells were studied in the in vitro brain stem slice preparation, using intracellular sharp microelectrode and whole-cell recording techniques. 2. Sulfide produced two reversible, concentration-dependent effec...

journal_title：Journal of neurophysiology

authors： Kombian SB,Reiffenstein RJ,Colmers WF

更新日期：1993-07-01 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：:Seizures may cause brain damage due to mechanisms initiated by excessive excitatory synaptic transmission. One such mechanism is the activation of death-promoting intracellular cascades by the influx and the perturbed homeostasis of Ca2+. The neuroprotective effects of preventing the entry of Ca2+ from voltage-depende...

journal_title：Journal of neurophysiology

authors： Pelletier MR,Wadia JS,Mills LR,Carlen PL

更新日期：1999-06-01 00:00:00

abstract：:Proinflammatory cytokines may sensitize primary sensory neurons and facilitate development of neuropathic pain processes after peripheral nerve injury. The goal of this study was to determine whether responses of dorsal root ganglion (DRG) neurons to exogenous tumor necrosis factor alpha (TNF-alpha) are altered in a c...

journal_title：Journal of neurophysiology

authors： Liu B,Li H,Brull SJ,Zhang JM

更新日期：2002-09-01 00:00:00

abstract：:1. Pulse inputs (similar to tendon jerks) were applied to the human ankle joint with the use of a hydraulic actuator. Inputs of only 1-2 degrees could elicit large responses (> 20% of maximum voluntary contraction). The magnitude of the response depended nonlinearly on a number of factors: the amplitude, direction, an...

journal_title：Journal of neurophysiology

authors： Stein RB,Kearney RE

更新日期：1995-01-01 00:00:00

abstract：:The basal ganglia participate in motor functions and are implicated in the pathophysiology of movement disorders. It has been shown in primates that the activity of many neurons in one of the basal ganglia output nuclei, the internal segment of the globus pallidus, changes with active or passive movements. The involve...

journal_title：Journal of neurophysiology

authors： Wichmann T,Kliem MA

更新日期：2004-02-01 00:00:00

abstract：:The goal of this study was to characterize the dynamics and functional connectivity of brain networks associated with fast (short-term) learning of handwriting using functional magnetic resonance imaging. Participants (n = 12) performed a graphomotor sequence learning task (naïve subjects learning to draw simple, 3-st...

journal_title：Journal of neurophysiology

authors： Swett BA,Contreras-Vidal JL,Birn R,Braun A

更新日期：2010-06-01 00:00:00

abstract：:Long-term depression (LTD) was induced in neocortical layer 5 pyramidal connections by pairing presynaptic firing with subthreshold postsynaptic depolarization (dLTD) or via a spike-timing protocol (tLTD). Like tLTD, dLTD reduced short-term depression and increased the coefficient of variation consistent with a presyn...

journal_title：Journal of neurophysiology

authors： Sjöström PJ,Turrigiano GG,Nelson SB

更新日期：2004-12-01 00:00:00

abstract：:Adult rats were submitted to a complete spinal cord transection at T9 level to address peripheral and spinal reflex changes in the caudal lumbar segments. Compound muscle and nerve action potentials decreased in amplitude and increased their duration between 14 and 30 days but recovered to near to normal values therea...

journal_title：Journal of neurophysiology

authors： Valero-Cabré A,Forés J,Navarro X

更新日期：2004-06-01 00:00:00

abstract：:Trimming all but two whiskers in adult rats produces a predictable change in cortical cell-evoked responses characterized by increased responsiveness to the two intact whiskers and decreased responsiveness to the trimmed whiskers. This type of synaptic plasticity in rat somatic sensory cortex, called "whisker pairing ...

journal_title：Journal of neurophysiology

authors： Sachdev RN,Lu SM,Wiley RG,Ebner FF

更新日期：1998-06-01 00:00:00

abstract：:The purpose of this study was to compare the discharge characteristics of motor units recruited during an isometric contraction that was sustained with the elbow flexor muscles by older adults at target forces that were less than the recruitment threshold force of each isolated motor unit. The discharge times of 27 si...

journal_title：Journal of neurophysiology

authors： Pascoe MA,Holmes MR,Enoka RM

更新日期：2011-02-01 00:00:00

abstract：:Horseradish peroxidase- (HRP) filled microelectrodes have been used to examine the anatomy and physiology of "commissural interneurons," a morphologically defined class of spinal cord interneuron in Xenopus laevis embryos. Commissural interneurons have unipolar cell bodies in the dorsal half of the spinal cord. Their ...

journal_title：Journal of neurophysiology

authors： Soffe SR,Clarke JD,Roberts A

更新日期：1984-06-01 00:00:00

abstract：:Neurons integrate subthreshold inputs in a frequency-dependent manner. For sinusoidal stimuli, response amplitudes thus vary with stimulus frequency. Neurons in entorhinal cortex show two types of such resonance behavior: stellate cells in layer II exhibit a prominent peak in the resonance profile at stimulus frequenc...

journal_title：Journal of neurophysiology

authors： Schreiber S,Erchova I,Heinemann U,Herz AV

更新日期：2004-07-01 00:00:00

abstract：:Microelectrode studies in monkeys performing short-term memory tasks show the sustained elevated discharge of cortical neurons during the retention of recalled sensory information. Cortical cells that are part of memory networks are assumed to receive numerous inputs of excitatory as well as inhibitory nature and loca...

journal_title：Journal of neurophysiology

authors： Bodner M,Zhou YD,Fuster JM

更新日期：1997-04-01 00:00:00

abstract：:Cortical neurons display two fundamental nonlinear response characteristics: contrast-set gain control (also termed contrast normalization) and response expansion (also termed half-squaring). These nonlinearities could play an important role in forming and maintaining stimulus selectivity during natural viewing, but o...

journal_title：Journal of neurophysiology

authors： Albrecht DG,Geisler WS,Frazor RA,Crane AM

更新日期：2002-08-01 00:00:00

abstract：:The underlying neurophysiology of postural control of the lower back in humans is poorly understood. We have characterized motor unit (MU) discharge activity in the deep lumbar multifidus (LM) muscle in nine healthy subjects (20-40 yr, 3 females). Bilateral fine wire electrodes were implanted at L4 spinal level using ...

journal_title：Journal of neurophysiology

authors： Lothe LR,Raven TJ,Eken T

更新日期：2015-08-01 00:00:00

abstract：:Interneuron precursors transplanted into visual cortex induce network plasticity during their heterochronic maturation. Such plasticity can have a significant impact on the function of the animal and is normally present only during a brief critical period in early postnatal development. Elucidating the synaptic and ph...

journal_title：Journal of neurophysiology

authors： Larimer P,Spatazza J,Stryker MP,Alvarez-Buylla A,Hasenstaub AR

更新日期：2017-07-01 00:00:00

abstract：:The visual world presents multiple potential targets that can be brought to the fovea by saccadic eye movements. These targets produce activity at multiple sites on a movement map in the superior colliculus (SC), an area of the brain related to saccade generation. The saccade made must result from competition between ...

journal_title：Journal of neurophysiology

authors： Port NL,Wurtz RH

更新日期：2003-09-01 00:00:00