Collicular function in human vision.

abstract：:We investigated the effect of different spatial and temporal parameters on the saccadic reaction times (SRTs) of the antisaccades and on the frequency and the SRTs of erratic prosaccades in five adult human subjects. The subjects were instructed to aim their saccades to the side opposite to where a visual go-stimulus ...

journal_title：Experimental brain research

authors： Fischer B,Weber H

更新日期：1997-09-01 00:00:00

abstract：:The effects of a cutaneous imperative stimulus trigger cue (sural nerve stimulation) versus visual cuing of rapid step initiation were assessed in young, healthy subjects (n = 18). Two sets of experiments were conducted in which the vertical ground reaction force and EMG in tibialis anterior (TA) and gluteus medius (G...

journal_title：Experimental brain research

authors： Kukulka CG,Hajela N,Olson E,Peters A,Podratz K,Quade C

更新日期：2009-01-01 00:00:00

abstract：:The main input of the lateral part of the cat's lateralis posterior-pulvinar complex (LP-P) comes from the primary visual cortex. We investigated the response properties of cells in area 17 projecting to the striate-recipient zone (LP1) of the cat's LP-P complex. The cells' receptive fields were stimulated with drifti...

journal_title：Experimental brain research

authors： Casanova C

更新日期：1993-01-01 00:00:00

abstract：:The arm movement control system often relies on visual feedback to drive motor adaptation and to help specify desired trajectories. Here we studied whether kinematic errors that were indicated with auditory feedback could be used to control reaching in a way comparable with when vision was available. We randomized twe...

journal_title：Experimental brain research

authors： Oscari F,Secoli R,Avanzini F,Rosati G,Reinkensmeyer DJ

更新日期：2012-08-01 00:00:00

abstract：:The study assessed the ability of the central nervous system (CNS) to use echoic information from sensory substitution devices (SSDs) to rotate the shoulders and safely pass through apertures of different width. Ten visually normal participants performed this task with full vision, or blindfolded using an SSD to obtai...

journal_title：Experimental brain research

authors： Kolarik AJ,Timmis MA,Cirstea S,Pardhan S

更新日期：2014-03-01 00:00:00

abstract：:Any passive rigid inertial object that we hold in our hand, e.g., a tennis racquet, imposes a field of forces on the arm that depends on limb position, velocity, and acceleration. A fundamental characteristic of this field is that the forces due to acceleration and velocity are linearly separable in the intrinsic coor...

journal_title：Experimental brain research

authors： Hwang EJ,Smith MA,Shadmehr R

更新日期：2006-03-01 00:00:00

abstract：:Second-order vestibular neurons of frogs receive converging monosynaptic excitatory and disynaptic excitatory and inhibitory inputs following electrical pulse stimulation of an individual semicircular canal nerve on the ipsilateral side. Here we revealed, in the in vitro frog brain, disynaptic inhibitory postsynaptic ...

journal_title：Experimental brain research

authors： Straka H,Dieringer N

更新日期：2000-12-01 00:00:00

abstract：:We studied 12 patients with Parkinson's disease (PD): 6 with postural instability (Hoehn and Yahr Stage 3) and 6 without (Stage 2 or 2.5), using a quantitative test based on the clinical pull test. Their findings were compared with those for 12 healthy controls. The patients on their usual medications were pulled eith...

journal_title：Experimental brain research

authors： Colebatch JG,Govender S

更新日期：2019-07-01 00:00:00

abstract：:In order to study neuronal information transfer from the striatum to the globus pallidus (GP) during voluntary movement, we recorded activity of electrophysiologically identified projection neurons in the putamen to the GP while the monkey was performing learned movement tasks. Two categories of putamen neurons were r...

journal_title：Experimental brain research

authors： Kimura M,Kato M,Shimazaki H

更新日期：1990-01-01 00:00:00

abstract：:In the present study the neurotoxic effects of a low dosage (0.5 mg/kg per day) of methylmercury (MeHg) on the developing nervous system were investigated. Pregnant rats were treated with MeHg from day 7 of pregnancy to day 7 of lactation. Locomotor activity (locomotion, rearing, and motility) and spatial learning abi...

journal_title：Experimental brain research

authors： Rossi AD,Ahlbom E,Ogren SO,Nicotera P,Ceccatelli S

更新日期：1997-12-01 00:00:00

abstract：:Recent results on the nature and limits of multisensory enhancement are inconsistent when stimuli are presented across spatial regions. We presented visual, tactile and visuotactile stimuli to participants in two speeded response tasks. Each unisensory stimulus was presented to either the left or right hemispace, and ...

journal_title：Experimental brain research

authors： Girard S,Collignon O,Lepore F

更新日期：2011-09-01 00:00:00

abstract：:Patients with Parkinson's disease (PD) commonly exhibit difficulties performing simultaneous tasks and levodopa has been shown to improve the performance of these movements to a greater extent than movements performed in isolation. The aim of this study was to compare the effects of acute unilateral pallidal lesions (...

journal_title：Experimental brain research

authors： Levy R,Lang AE,Hutchison WD,Lozano AM,Dostrovsky JO

更新日期：2002-12-01 00:00:00

abstract：:Most studies of rapid orienting gaze shifts generated by combined eye and head movements have focused on an experimental condition in which gaze displacements are started with the subject's eyes in the normal straight-ahead position in the orbit. Such an experimental approach does not permit a clear identification of ...

journal_title：Experimental brain research

authors： Volle M,Guitton D

更新日期：1993-01-01 00:00:00

abstract：:We used the framework of the uncontrolled manifold (UCM) hypothesis to analyze the structure of finger force variability in discrete (ramp) and oscillatory force production tasks performed by the index and middle fingers of the right hand acting in parallel. Subjects performed the tasks at fast and slow rates, with an...

journal_title：Experimental brain research

authors： Latash ML,Scholz JF,Danion F,Schöner G

更新日期：2002-10-01 00:00:00

abstract：:Within the substantia nigra, anatomical, neurochemical and pharmacological findings strongly suggest that transmitter and protein are secreted from the dendrites of nigrostriatal neurones. This phenomenon may underlie a non classical modulatory cellular mechanism. Two conductances are generated in nigrostriatal neuron...

journal_title：Experimental brain research

authors： Harris NC,Ramsay S,Kelion A,Greenfield SA

更新日期：1989-01-01 00:00:00

abstract：:The superior colliculus has long been recognized as an important structure in the generation of saccadic displacements of the visual axis. Neurons with presaccadic activity encoding saccade vectors are topographically organized and form a "motor map." Recently, neurons with fixation-related activity have been recorded...

journal_title：Experimental brain research

authors： Paré M,Guitton D

更新日期：1994-01-01 00:00:00

abstract：:Intracortical inhibition was investigated in normal human volunteers by paired-pulse transcranial magnetic stimulation, using a new, computer-assisted threshold-tracking method. Motor threshold was defined as the stimulus amplitude required to evoke a motor evoked potential of 0.2 mV (peak-to-peak) in abductor pollici...

journal_title：Experimental brain research

authors： Fisher RJ,Nakamura Y,Bestmann S,Rothwell JC,Bostock H

更新日期：2002-03-01 00:00:00

abstract：:Interval timing deficiencies in Parkinson's disease (PD) patients have been a matter of debate. Here we test the possibility of PD heterogeneity as a source for this discrepancy. Temporal performance of PD patients and control subjects was assessed during two interval tapping tasks and during a categorization task of ...

journal_title：Experimental brain research

authors： Merchant H,Luciana M,Hooper C,Majestic S,Tuite P

更新日期：2008-01-01 00:00:00

abstract：:A green button may be the target of a movement, or it may instruct the opening of an adjacent door. In the first case, its spatial configuration serves to guide the hand, whereas in the second case its colour allows a decision between alternative courses of action. This study contrasts these two categories of visuomot...

journal_title：Experimental brain research

authors： Toni I,Rushworth MF,Passingham RE

更新日期：2001-12-01 00:00:00

abstract：:The purpose of this study was to examine the effect of prior experience concerning direction of a postural perturbation on the balance response of cats to translations of their support surface. Previous work has shown that, when cats are translated in many directions in the horizontal plane, they respond by exerting a...

journal_title：Experimental brain research

authors： Macpherson JM

更新日期：1994-01-01 00:00:00

abstract：:A number of perceptual and neurophysiological studies have investigated the effects of delivering unilateral versus bilateral tactile sensory stimulation. While a number of studies indicate that perceptual discrimination degrades with opposite-hand stimulation, there have been no reports that examined the digit specif...

journal_title：Experimental brain research

authors： Nguyen RH,Forshey TM,Holden JK,Francisco EM,Kirsch B,Favorov O,Tommerdahl M

更新日期：2014-11-01 00:00:00

abstract：:This study explored the directional specificity of fear of falling (FoF) effects on the stabilizing function of anticipatory postural adjustments (APA). Participants (N = 71) performed a series of lateral leg raises from an elevated surface in three conditions: in the "Control condition", participants stood at the mid...

journal_title：Experimental brain research

authors： Gendre M,Yiou E,Gélat T,Honeine JL,Deroche T

更新日期：2016-03-01 00:00:00

abstract：:In one of the most-widely used species in pineal gland research, the strongly photoperiodic golden hamster, Mesocricetus auratus, no electrophysiological data on pinealocytes are currently available. To fill this gap, in the present study 185 spontaneously active pinealocytes from male golden hamsters were recorded ex...

journal_title：Experimental brain research

authors： Stehle J,Reuss S,Vollrath L

更新日期：1987-01-01 00:00:00

abstract：:The responses of 192 single units in the cat's pulvinar-complex, comprising the inferior, medial and lateral pulvinar nuclei, were studied in paralysed cats, lightly anaesthetized with N2O/O2 supplemented with pentobarbitone. About 60% of the cells were visually driven and their receptive fields classified as either d...

journal_title：Experimental brain research

authors： Mason R

更新日期：1978-01-18 00:00:00

abstract：:Early postnatal application of thyroid hormones to rats results in morphological changes in septum and hippocampus. Modulation in the expression of either neurotrophins and/or their receptors is postulated to be responsible for these effects. In the present study we tested whether thyroxine administration leads to cha...

journal_title：Experimental brain research

authors： Lüesse HG,Roskoden T,Linke R,Otten U,Heese K,Schwegler H

更新日期：1998-03-01 00:00:00

abstract：:The activity of single neurons within the hand area of the precentral motor cortex of primates was recorded during the performance of a maintained precision grip between the thumb and forefinger. The finger opposition forces were exerted against a strain gauge which allowed force changes to be studied under near isome...

journal_title：Experimental brain research

authors： Smith AM,Hepp-Reymond MC,Wyss UR

更新日期：1975-09-29 00:00:00

abstract：:Even the simplest volitional movements must be precisely coordinated with anticipatory postural adjustments. Little is currently known about the neural networks that coordinate these adjustments in healthy adults. We measured brain activity prior to movement during a bimanual load-lifting task, designed to elicit anti...

journal_title：Experimental brain research

authors： Ng TH,Sowman PF,Brock J,Johnson BW

更新日期：2011-01-01 00:00:00

abstract：:In the context of an analysis concerning factors of importance for the relative contributions of recruitment and rate gradation of muscle force, the distribution of electrical excitability was analyzed for medial gastrocnemius (MG) motoneurones of rat and cat. The experimental data came from previously collected intra...

journal_title：Experimental brain research

authors： Bakels R,Kernell D

更新日期：1994-01-01 00:00:00

abstract：:Previous studies have demonstrated changes in motor memories with the passage of time on the order of hours. We sought to further this work by determining the influence that time on the order of seconds has on motor learning by changing the duration between successive reaches (inter-reach-interval (IRI)). Human subjec...

journal_title：Experimental brain research

authors： Francis JT

更新日期：2005-11-01 00:00:00

abstract：:During goal-directed arm movements, the eyes, head, and arm are coordinated to look at and reach the target. We examined whether the expectancy of visual information about the target modifies Anticipatory Postural Adjustments (APAs). Ten standing subjects had to (1) move the eyes, head and arm, so as to reach, with bo...

journal_title：Experimental brain research

authors： Esposti R,Bruttini C,Bolzoni F,Cavallari P

更新日期：2017-05-01 00:00:00