Abstract:
:Optokinetic circular vection (CV) was investigated in 12 subjects using an optokinetic pattern rotating at 15 degrees /s, 30 degrees /s, or 60 degrees /s, and four viewing conditions: FOL, subjects attentively followed details of pattern; STA, subjects stared at the pattern; SUP, subjects suppressed their optokinetic reflex (OKR) voluntarily (this was facilitated by a white, featureless band at eye level which separated the pattern in an upper and lower half); FIX, subjects suppressed OKR by fixating at a stationary fixation point (FP). To quantify CV, subjects pressed a signal button each time they felt rotated by a further 90 degrees; OKR was recorded by electro-oculography. Voluntary suppression of OKR was achieved during 2-70% of stimulus duration. Total apparent self-displacement (cumulated 90 degrees indications) was smallest during FOL, increasing gradually in the order FOL < STA < SUP < FIX (all inequalities significant); CV latency decreased in the same order. Slow eye velocity was identical during FOL and STA, and was reduced by 70-30% during SUP. We conclude from these results: (1) the effect of eye movements on CV depends on whether these are intentional (FOL) or not (STA); (2) the increase in CV during voluntary OKR suppression without FP suggests that afferent motion cues (retinal slip) are processed with larger gain than efferent motion cues (eye movement); hence (3) the enhancement of CV during fixation of FP is not, or not solely, the result of the apparent motion of the FP counter to the direction of pattern movement (Duncker illusion).
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Becker W,Raab S,Jürgens Rdoi
10.1007/s00221-002-1104-ykeywords:
subject
Has Abstractpub_date
2002-06-01 00:00:00pages
554-7issue
4eissn
0014-4819issn
1432-1106journal_volume
144pub_type
杂志文章abstract::Efferent and afferent connections of the visually responsive cortex (area anteromedial, AM) located in the anterior portion of area 18b were studied with degeneration and horseradish peroxidase (HRP) methods following small lesions and HRP injections into this area. Degenerating axons, terminals and retrogradely HRP-l...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00237996
更新日期:1984-01-01 00:00:00
abstract::The current study examined the movement kinematics of older adults when aiming to vertically oriented targets. Late middle-age and early old-age participants completed 20 trials to a small target located downward or upward by 0.16 m from a home position at shoulder height. Aiming direction had a significant effect, re...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-011-2947-x
更新日期:2012-02-01 00:00:00
abstract::We studied Fos expression in the central nociceptive pathways at different sedative levels in order to clarify the central mechanism of propofol's nociceptive action. Sprague-Dawley rats received propofol (PRO) or pentobarbital (PEN) and were divided into two groups with different doses of drug administration (light a...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-006-0779-x
更新日期:2007-05-01 00:00:00
abstract::According to the size principle for motoneurons one would expect that an excitatory stimulus given to a motoneuronal pool should evoke small excitatory postsynaptic potentials (EPSPs) in large and large EPSPs in small motoneurons of the pool. In this study this expectation was tested for the motoneuron pool of the fir...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00229117
更新日期:1994-01-01 00:00:00
abstract::Rare-earth elements (REEs) are applied in various fields by virtue of their superior physical and chemical properties. Surveys have reported that REEs can impair learning and memory in children and induce neurobehavioral abnormalities in animals. However, the mechanism underlying this neurotoxicity is still unclear. L...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-017-5102-5
更新日期:2017-12-01 00:00:00
abstract::The current study examined whether the amount and location of available movement information influenced the stability of visuomotor coordination. Participants coordinated a handheld pendulum with an oscillating visual stimulus in an inphase and antiphase manner. The effects of occluding different amounts of phase at d...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-009-1982-3
更新日期:2012-09-01 00:00:00
abstract::Trace eyeblink conditioning was investigated in 31 patients with focal cerebellar lesions and 19 age-matched controls. Twelve patients presented with lesions including the territory of the superior cerebellar artery (SCA). In 19 patients lesions were restricted to the territory of the posterior inferior cerebellar art...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-005-0171-2
更新日期:2006-03-01 00:00:00
abstract::The effect of Coriolis, cross-coupled stimulation on the vestibuloocular reflex and the elicitation of motion sickness depends on background gravitoinertial force level (DiZio et al. 1986, 1987; Graybiel et al. 1977; Lackner and Graybiel 1984, 1986). We have explored whether this response dependency is related to the ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00247597
更新日期:1988-01-01 00:00:00
abstract::The cerebral response evoked by stimulation of the bulbar pyramidal tract in wood rats, like that of laboratory rats, consisted of a small alpha wave, almost obscured by a very large, superimposed r wave. The alpha wave behaved like a purely antidromic response, whereas the r wave behaved like a postsynaptic response,...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00228700
更新日期:1993-01-01 00:00:00
abstract::It is a conservative and reasonable suggestion that implicit functioning, as in blindsight, is simply a weakened, degraded form of normal functioning, especially as the parameters of vision in blindsight are themselves weakened--e.g., acuity is reduced, detection thresholds are raised, chromatic discrimination is coar...
journal_title:Experimental brain research
pub_type: 杂志文章,评审
doi:10.1007/s00221-008-1388-7
更新日期:2009-01-01 00:00:00
abstract::When humans pursue motion stimuli composed of alternating constant velocity segments of randomised duration (RD), they nevertheless initiate anticipatory eye deceleration before stimulus direction changes at a pre-programmed time based on averaging prior stimulus timing. We investigated, in both the time and frequency...
journal_title:Experimental brain research
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00221-011-2725-9
更新日期:2011-07-01 00:00:00
abstract::After injections of horseradish peroxidase (HRP) into various parts of the superior colliculus (SC) in 14 cats, retrogradely labeled neurons were found in parts of all deep cerebellar nuclei. The present study demonstrated that there are three main origins of the cerebellotectal projections in regard to the locations ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00239567
更新日期:1982-01-01 00:00:00
abstract::Unitary discharges of the lateral geniculate nucleus (LGN) were analyzed in anesthetized and paralyzed rats after inactivation of visual cortical areas (VC) by cryoblockade or by depositing a cotton wick soaked in KCl (3 M). The receptive fields were mapped prior to and following the interruption of the cortico-genicu...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00238152
更新日期:1984-01-01 00:00:00
abstract::The effects of electrical stimulation within the midbrain on fusimotor output to the jaw elevator muscles were studied in anaesthetized cats. Muscle spindle afferents recorded in the mesencephalic trigeminal nucleus were categorised as primary or secondary by their responses to succinylcholine during sinusoidal or ram...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00227778
更新日期:1993-01-01 00:00:00
abstract::Impaired plantar flexor muscle activation during push-off in late stance contributes importantly to reduced gait ability in adults with cerebral palsy (CP). Here we used low-intensity transcranial magnetic stimulation (TMS) to suppress soleus EMG activity during push-off as an estimate of corticospinal drive in CP adu...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-019-05520-3
更新日期:2019-06-01 00:00:00
abstract::In humans, vibration applied to muscle tendons evokes illusory sensations of movement that are usually associated with an excitatory tonic response in muscles antagonistic to those vibrated (antagonist vibratory response or AVR). The aim of the present study was to investigate the neurophysiological mechanisms underly...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s002210050631
更新日期:1999-02-01 00:00:00
abstract::The cerebellar projection from the facial and motor trigeminal nuclei was studied in the cat by means of retrograde axonal transport of wheat germ agglutinin-horseradish peroxidase and fluorescent tracers. The feline facial nucleus was cytoarchitectonically subdivided into ventromedial, ventrolateral, lateral, dorsal,...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00247935
更新日期:1989-01-01 00:00:00
abstract::Adult-like fine control of cyclical motor patterns found in locomotion develops into adolescence. Single-leg hopping in place is one such motor pattern where children have demonstrated a reduced capacity to control horizontal motion and match metronome cues. These developmental differences might arise from immature in...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-019-05548-5
更新日期:2019-07-01 00:00:00
abstract::The descending projection of the hypothalamic paraventricular nucleus (PVN) to the sympathetic preganglionic neurons (SPNs) in the upper thoracic cord of the rat was studied. PVN-fibers were labeled by anterograde transport of Phaseolus vulgaris leucoagglutinin (PHA-L), while SPNs were retrogradely labeled with choler...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00229982
更新日期:1991-01-01 00:00:00
abstract::The main aim of the present study was to explore, by means of high-density EEG, the intensity and the temporal pattern of event-related sensory-motor alpha desynchronization (ERD) during the observation of different types of hand motor acts and gestures. In particular, we aimed to investigate whether the sensory-motor...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-010-2371-7
更新日期:2010-09-01 00:00:00
abstract::The present study investigated how valence, arousal, and subjective liking of music affect visually induced motion sickness (VIMS). VIMS is a common side effect when interacting with virtual environments, resulting in discomfort, dizziness, and/or nausea. Music has previously been shown to reduce VIMS, but the precise...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-020-05871-2
更新日期:2020-10-01 00:00:00
abstract::The aim of this study was to analyse the functional impairments caused by chronic median nerve compression at the wrist on hand sensation and manual skill. Hand function was assessed in 11 patients (8 women and 3 men) with severe carpal tunnel syndrome (CTS) and compared with that of an age- and sex-matched control gr...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s002210050817
更新日期:1999-09-01 00:00:00
abstract::Although the perception of emotion in individuals is an important social skill, very little is known about how emotion is determined from a crowd of individuals. We investigated the perception of emotion in scenes of crowds populated by dynamic characters each expressing an emotion. Facial expressions were masked in t...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-009-2037-5
更新日期:2010-07-01 00:00:00
abstract::Abstract. Although the contribution of binocular vision to reach-to-grasp movements has been extensively studied, it has been largely ignored in locomotion. The aim of these studies was to explore the role of binocular vision during the approach phase and step over the obstacle and the contribution of head movements t...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-001-0948-x
更新日期:2002-02-01 00:00:00
abstract::We studied characteristics of digit action and their co-variation patterns across trials (prehension synergies) during static holding of an object while the external torque could change slowly and smoothly. The subjects held in the air an instrumented handle with an attachment that allowed a smooth change in the exter...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-011-2799-4
更新日期:2011-09-01 00:00:00
abstract::Transparency is perceived when two or more objects or surfaces can be separated by the visual system whilst they are presented in the same region of the visual field at the same time. This segmentation of distinct entities on the basis of overlapping local visual cues poses an interesting challenge for the understandi...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-013-3631-0
更新日期:2013-09-01 00:00:00
abstract::In cats, anaesthetized with chloralose and paralysed, the responses of units in the right lateral thalamus were recorded while the extrinsic ocular muscles (EOM) of the right eye were stretched in the dark. Phasic responses were found in all layers of the dorsal lateral geniculate nucleus (LGNd) and in the perigenicul...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00236643
更新日期:1980-02-01 00:00:00
abstract::If horizontal saccades or smooth-pursuit eye movements are made with the line-of-sight at different elevations, the three-dimensional (3D) angular rotation axis of the globe tilts by half the vertical eye eccentricity. This phenomenon is named "half-angle rule" and is a consequence of Listing's law. It was recently fo...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s002210050943
更新日期:1999-11-01 00:00:00
abstract::A photograph of an action contains implicit information about the depicted motion. Previous studies using either psychophysics or neuroimaging suggested that the neural processing of implied-motion images shares some features of real-motion processing. According to the hypothesis that the target depicted in photograph...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-011-2598-y
更新日期:2011-04-01 00:00:00
abstract::The activity of 28 cells located mainly in the secondary auditory cortex (A II) of awake squirrel-monkeys, was extracellularly recorded for periods of up to 6 h. Seven different species-specific vocalizations, which were repeatedly presented to the monkey, were used as auditory stimuli. Twenty-six cells responded, at ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00239144
更新日期:1979-02-15 00:00:00