Development of thalamocortical response transformations in the rat whisker-barrel system.

abstract：:Frequency facilitation is a process whereby neurosecretion increases as a function of stimulation frequency during repetitive synaptic activity. To examine the physiological basis underlying facilitation, we have estimated the frequency dependence of the synaptic parameters n (number of units capable of responding to ...

journal_title：Journal of neurophysiology

authors： Worden MK,Bykhovskaia M,Hackett JT

更新日期：1997-07-01 00:00:00

abstract：:Red and green cones of two turtle species (Pseudemys scripta elegans and Chelydra serpentina) retina have been stained with Golgi procedures and examined by light microscopy of whole-mount tissue and by electron microscopy of serial thin sections. By light microscopy, red and green single cones appear indistinguishabl...

journal_title：Journal of neurophysiology

authors： Kolb H,Jones J

更新日期：1985-08-01 00:00:00

abstract：:The activity patterns in self- and cross-reinnervated flexor digitorum longus (FDL) and soleus (SOL) muscles were examined during natural movements in awake, unrestrained cats in which electromyographic (EMG) electrodes, tendon-force gauges, and muscle-length gauges had been chronically implanted under anesthesia and ...

journal_title：Journal of neurophysiology

authors： O'Donovan MJ,Pinter MJ,Dum RP,Burke RE

更新日期：1985-10-01 00:00:00

abstract：:Smoothness is a hallmark of healthy movement. Past research indicates that smoothness may be a side product of a control strategy that minimizes error. However, this is not the only reason for smooth movements. Our musculoskeletal system itself contributes to movement smoothness: the mechanical impedance (inertia, dam...

journal_title：Journal of neurophysiology

authors： Salmond LH,Davidson AD,Charles SK

更新日期：2017-03-01 00:00:00

abstract：:The presence of a calcium-activated nonspecific cationic (CAN) current in turtle motoneurons and its involvement in plateau potentials, bistability, and wind-up was investigated by intracellular recordings in a spinal cord slice preparation. In the presence of tetraethylammonium (TEA) and tetrodotoxin (TTX), calcium a...

journal_title：Journal of neurophysiology

authors： Perrier JF,Hounsgaard J

更新日期：1999-08-01 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：:Ifenprodil is a selective blocker of NMDA receptors that are heterodimers composed of GluN1/GluN2B subunits. This pharmacological profile has been extensively used to test the role of GluN2B-containing NMDA receptors in learning and memory formation. However, ifenprodil has also been reported to have actions at a numb...

journal_title：Journal of neurophysiology

authors： Delaney AJ,Power JM,Sah P

更新日期：2012-03-01 00:00:00

abstract：:Dopamine neurons of the ventral tegmental area (VTA) signal the occurrence of a reward-predicting conditioned stimulus (CS) with a subsecond duration increase in post-CS firing rate. Important theories about reward-prediction error and reward expectancy have been informed by the substantial number of studies that have...

journal_title：Journal of neurophysiology

authors： Totah NK,Kim Y,Moghaddam B

更新日期：2013-07-01 00:00:00

abstract：:1. Dim backgrounds can enhance small-spot flicker responses of cat retinal horizontal cells by a factor of 2 or more. 2. Intracellular marking with horseradish peroxidase (HRP) reveals that this enhancement effect occurs in--but is not necessarily limited to--the cone-connected, A-type horizontal cell. 3. Flicker ampl...

journal_title：Journal of neurophysiology

authors： Pflug R,Nelson R,Ahnelt PK

更新日期：1990-08-01 00:00:00

abstract：:We used laser scanning photostimulation through a focused UV laser of caged glutamate in an in vitro slice preparation through the rat's somatosensory thalamus to study topography and connectivity between the thalamic reticular nucleus and ventral posterior lateral nucleus. This enabled us to focally stimulate the som...

journal_title：Journal of neurophysiology

authors： Lam YW,Sherman SM

更新日期：2005-10-01 00:00:00

abstract：:The ability of a spatial population of cutaneous, Adelta, and C mechano-nociceptors to encode the location and intensity of a noxious, cutaneous indentation was examined using an isolated preparation in a rat model. Skin and its intact innervation were harvested from the medial thigh of the rat hindlimb and placed in ...

journal_title：Journal of neurophysiology

authors： Khalsa PS,Zhang C,Qin YX

更新日期：2000-05-01 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：:Many have recently questioned whether all levels of actions understanding, from lower kinematic levels to the higher goal or intention levels of action understanding, are processed in the action observation network (a network of neurons that are active during action execution and observation). A recent study by Wurm a...

journal_title：Journal of neurophysiology

authors： Marneweck M,Vallence AM

更新日期：2016-03-01 00:00:00

abstract：:Despite the importance of the thumb to hand function, little is known about the origins of thumb impairment poststroke. Accordingly, the primary purpose of this study was to assess whether thumb flexors have heightened stretch reflexes (SRs) following stroke-induced hand impairment. The secondary purpose was to compar...

journal_title：Journal of neurophysiology

authors： Towles JD,Kamper DG,Rymer WZ

更新日期：2010-10-01 00:00:00

abstract：:It is well established that orderly patterns of motor neuron activity, muscle recruitment, and limb movement are generated in chicks during motility by embryonic day (E)9, the midpoint in embryonic development. However, our recent work suggests that some attributes of motility, such as the rhythm of repetitive limb mo...

journal_title：Journal of neurophysiology

authors： Bradley NS,Jahng DY

更新日期：2003-09-01 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：:In this study, we examined the effect of arachidonic acid (AA) on the BK alpha-subunit with or without beta-subunits expressed in Xenopus oocytes. In excised patches, AA potentiated the hSlo-alpha current and slowed inactivation only when beta2/3 subunit was co-expressed. The beta2-subunit-dependent modulation by AA p...

journal_title：Journal of neurophysiology

authors： Sun X,Zhou D,Zhang P,Moczydlowski EG,Haddad GG

更新日期：2007-01-01 00:00:00

abstract：:Annexin I is a local mediator in neural-endocrine feedback control of inflammation. J. Neurophysiol. 80: 3120-3126, 1998. Activation of primary afferent nociceptors induces a neural endocrine-mediated inhibition of the inflammatory response via a circuit that includes ascending spinal pathways and activation of the hy...

journal_title：Journal of neurophysiology

authors： Green PG,Strausbaugh HJ,Levine JD

更新日期：1998-12-01 00:00:00

abstract：:1. The responses of single neurons in the primary somatosensory cortex of the cat to brief air-pulse stimuli were quantitatively examined. These controlled natural stimuli activated almost exclusively rapidly adapting hair units which, on systematic movement of the stimulus through the receptive field, gave unit-respo...

journal_title：Journal of neurophysiology

authors： Laskin SE,Spencer WA

更新日期：1979-07-01 00:00:00

abstract：:N-methyl-D-aspartate receptors (NMDARs) play an important role in cell survival versus cell death decisions during neuronal development, ischemia, trauma, and epilepsy. Coupling of neurons by electrical synapses (gap junctions) is high or increases in neuronal networks during all these conditions. In the developing CN...

journal_title：Journal of neurophysiology

authors： Wang Y,Denisova JV,Kang KS,Fontes JD,Zhu BT,Belousov AB

更新日期：2010-12-01 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：:Long-term potentiation (LTP) of C-fiber-evoked field potentials in spinal dorsal horn may be relevant to pathological pain. Our previous work has shown that the late phase of the spinal LTP is protein synthesis-dependent. Considerable evidence has accumulated that dopamine D1/D5 receptors are important for late-phase ...

journal_title：Journal of neurophysiology

authors： Yang HW,Zhou LJ,Hu NW,Xin WJ,Liu XG

更新日期：2005-08-01 00:00:00

abstract：:We studied the effects of fatigue of the index finger on indices of force variability in discrete and rhythmic accurate force production tasks performed by the index finger and by all four fingers pressing in parallel. An increase in the variance of the force produced by the fatigued index finger was expected. We hypo...

journal_title：Journal of neurophysiology

authors： Singh T,Varadhan SK,Zatsiorsky VM,Latash ML

更新日期：2010-06-01 00:00:00

abstract：:Serotonergic fibers broadly innervate the thalamus and may influence the sleep wake cycle, attention, and other processes through modulation of neurons in this structure. However, the actions of serotonin in the dorsal thalamus have been investigated in detail only in the dorsal lateral geniculate nucleus. In the pres...

journal_title：Journal of neurophysiology

authors： Monckton JE,McCormick DA

更新日期：2002-04-01 00:00:00

abstract：:A tool or probe often functions as an extension of the hand, transmitting vibrations to the hand to produce a percept of the object contacting the tool or probe. This paper reports the psychophysical results of a combined psychophysical and neurophysiological study of the perception of vibration transmitted through a ...

journal_title：Journal of neurophysiology

authors： Brisben AJ,Hsiao SS,Johnson KO

更新日期：1999-04-01 00:00:00

abstract：:A series of studies were carried out to investigate the role of the cerebellar flocculus and ventral paraflocculus in the ability to voluntarily cancel the vestibuloocular reflex (VOR). Squirrel monkeys were trained to pursue moving visual targets and to fixate a head stationary or earth stationary target during passi...

journal_title：Journal of neurophysiology

authors： Belton T,McCrea RA

更新日期：2000-09-01 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：:Transcranial direct current stimulation (tDCS) can produce a lasting polarity-specific modulation of cortical excitability in the brain, and it is increasingly used in experimental and clinical settings. Recent studies suggest that the after-effects of tDCS are related to molecular mechanisms of activity-dependent syn...

journal_title：Journal of neurophysiology

authors： Ranieri F,Podda MV,Riccardi E,Frisullo G,Dileone M,Profice P,Pilato F,Di Lazzaro V,Grassi C

更新日期：2012-04-01 00:00:00

abstract：:The medial division of the ventral nucleus of the lateral lemniscus (VNLLm) contains a specialized population of neurons that is sensitive to interaural temporal disparities (ITDs), a potent cue for sound localization along the azimuth. Unlike many ITD-sensitive neurons elsewhere in the auditory system, neurons in the...

journal_title：Journal of neurophysiology

authors： Batra R,Fitzpatrick DC

更新日期：2002-08-01 00:00:00

abstract：:Little is known about the substrates for the large-scale shifts in the cortical representation produced by limb amputation. Subcortical changes likely contribute to the cortical remodeling, yet there is little data regarding the extent and pattern of reorganization in thalamus after such a massive deafferentation. Mor...

journal_title：Journal of neurophysiology

authors： Florence SL,Hackett TA,Strata F

更新日期：2000-05-01 00:00:00