Abstract：
:For the vestibulo-ocular reflex (VOR) to function properly, namely to ensure a stable retinal image under all circumstances, it should be able to take into account varying eye positions in the orbit and varying orientations of the head with respect to the axis about which it is rotating. We tested this capability by quantifying the gain and the time constant of the horizontal component of the VOR during rotation about an earth vertical axis when the line of sight (optical axis) was moved out of the plane of head rotation--either by rotating the eyes up or down in the orbit or by pitching the head up or down with respect to earth-horizontal. In either case the gain of the horizontal component of the VOR was attenuated precisely by the cosine of the angle made between the optical axis and the plane of head rotation. Furthermore, if the head was pitched up or down but the eye rotated oppositely in the orbit so as to keep the line of sight in the plane of head rotation the gain of the horizontal component of the VOR was the same value as with the head and eyes both straight ahead. In contrast, the time constant of the VOR varied only as a function of the orientation of the head and not as a function of eye position in the orbit. During rotation about an earth vertical axis, the time constant was longest (about 18 s) when the head was pitched forward to place the lateral canals near earth-horizontal and shortest (about 11 s) when the head was pitched backward to place the vertical canals near earth-horizontal.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Fetter M,Hain TC,Zee DSdoi
10.1007/BF00238215subject
Has Abstractpub_date
1986-01-01 00:00:00pages
208-16issue
1eissn
0014-4819issn
1432-1106journal_volume
64pub_type
杂志文章abstract：:Morphometric changes have been studied at the mouse neuromuscular junction (NMJ) as a function of the frequency of stimulation. In vivo stimulation was made at either 10, 25, 50 or 100 Hz. No significant change in the area of NMJ profiles is observed after stimulation. This indicates that stimulation does not change t...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00237590
更新日期：1986-01-01 00:00:00
abstract：:We studied the effects of morphine injected either systemically or into the dorsal periaqueductal gray (DPAG) or nucleus accumbens (NA) using conventional and ethological analyses of behavior of rats submitted to the elevated plus-maze test with transparent walls. Intraperitoneal morphine (0.1 mg/kg and 0.3 mg/kg) inc...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210050896
更新日期：1999-11-01 00:00:00
abstract：:The use of arm weight support (WS) to optimize movement quality may be an avenue for improved upper limb stroke rehabilitation; however, the underlying neurophysiological effects of WS are not well understood. Rehabilitation exercises may be performed when sitting or standing, but the interaction of posture with WS ha...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-016-4775-5
更新日期：2017-01-01 00:00:00
abstract：:Using laminar field potential analysis, we examined responses elicited by both photic and optic nerve stimulations in 30 kittens of 0--65 days of age and in three adult cats. In adult cats, the response in the visual cortex on optic nerve stimulations is a wave complex which consists mainly of surface positive depth n...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00236803
更新日期：1983-01-01 00:00:00
abstract：:Limitations in visual working memory (VWM) have been extensively studied in psychophysical tasks, but not well understood in terms of how these memory limits translate to performance in more natural domains. For example, in reaching to grasp an object based on a spatial memory representation, overshooting the intended...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-016-4553-4
更新日期：2016-06-01 00:00:00
abstract：:We investigated the capacities of human subjects to intercept moving targets in a two-dimensional (2D) space. Subjects were instructed to intercept moving targets on a computer screen using a cursor controlled by an articulated 2D manipulandum. A target was presented in 1 of 18 combinations of three acceleration types...
journal_title：Experimental brain research
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1007/pl00005769
更新日期：1997-10-01 00:00:00
abstract：:The present study used the redundant target paradigm on healthy subjects to investigate functional hemispheric asymmetries and interhemispheric cooperation in the perception of emotions from faces. In Experiment 1 participants responded to checkerboards presented either unilaterally to the left (LVF) or right visual h...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-005-0279-4
更新日期：2006-05-01 00:00:00
abstract：:In three monkeys trained to finely grade grip force in a visuomotor step-tracking task, the effect of the context on neuronal force correlates was quantitatively assessed. Three trial types, which differed in force range, number, and direction of the force steps, were presented pseudo-randomly and cued with the color ...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s002210050827
更新日期：1999-09-01 00:00:00
abstract：:Sinusoidal translation while rotating at constant angular velocity about a vertical axis (translation while rotating, TWR) produces centripetal and translational accelerations along the direction of translation and an orthogonal Coriolis acceleration due to the translation in the rotating frame. Thus, a Coriolis accel...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-004-2178-5
更新日期：2005-06-01 00:00:00
abstract：:Our objective was to determine if caudal ventral respiratory group (VRG) expiratory (E) neurons that drive abdominal expiratory motoneurons in the lumbar cord respond to intercostal and lumbar nerve afferent stimulation. Results showed that 92% of medullary E-neurons that were antidromically activated from the upper l...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00230702
更新日期：1989-01-01 00:00:00
abstract：:Motor learning results from repeated exposure to the same movement and allows a mover to increase movement optimality. Typically, this has only been considered in single-step movements. In sequential movements, an initial reach movement is tailored to the demands of the onward movement. However, the exact role of moto...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-013-3728-5
更新日期：2014-01-01 00:00:00
abstract：:Perception of our own bodies is based on integration of visual and tactile inputs, notably by neurons in the brain's parietal lobes. Here we report a behavioural consequence of this integration process. Simply viewing the arm can speed up reactions to an invisible tactile stimulus on the arm. We observed this visual e...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-003-1651-x
更新日期：2004-01-01 00:00:00
abstract：:The capacity to acquire motor skills through repeated practice of a sequence of movements underlies many everyday activities. Extensive research in humans has dealt with the importance of spatial and temporal factors on motor sequence learning, standing in contrast to the few studies available in animals, particularly...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-011-2839-0
更新日期：2011-10-01 00:00:00
abstract：:The horizontal and vertical components of the positions of both eyes of rhesus monkeys were measured during periods of binocularly stable eye positions (eye pauses) while the animals fixated a small target. Differences between monocular and binocular viewing, as well as effects of target size and background illuminati...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00236231
更新日期：1984-01-01 00:00:00
abstract：:Correlations between pairs of spontaneous climbing fiber responses (CFRs) recorded from couples of nearby Purkinje cells (PCs) were studied in immature rats by using cross-correlograms between CFR pairs, and compaired to those in adult animals. Correlations were found as early as day 3. Some days later, on PN days 7--...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00236821
更新日期：1979-01-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-011-2823-8
更新日期：2011-10-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-002-1362-8
更新日期：2003-03-01 00:00:00
abstract：:We tested the hypothesis that some of the electromyographic (EMG) responses elicited in preactivated forearm muscles by transcranial stimulation of the human motor cortex are produced by activity in a disynaptic corticospinal linkage involving propriospinal-like interneurones with cell bodies in the spinal C3-4 segmen...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00229634
更新日期：1996-06-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-011-2756-2
更新日期：2011-08-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-014-3958-1
更新日期：2014-09-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
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更新日期：2010-09-01 00:00:00
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journal_title：Experimental brain research
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更新日期：2015-04-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
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更新日期：2017-04-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00228191
更新日期：1992-01-01 00:00:00
abstract：:Our previous study showed an increase in total cholesterol level of the hippocampus after kainate-induced injury, but whether this is further metabolized to neurosteroids is not known. The first step in neurosteroid biosynthesis is the conversion of cholesterol to pregnenolone by the enzyme cytochrome P450 side chain ...
journal_title：Experimental brain research
pub_type： 杂志文章
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更新日期：2008-03-01 00:00:00
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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：:The survival of grafts of dissociated allogeneic fetal neural dopamine (DA) rich tissue in the striatum has been studied after transplantation between inbred strains of mice differing at defined immunogenetical loci between donor and recipient. Six to 7 weeks and 15 weeks after grafting, surviving grafted DA neurons w...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00253636
更新日期：1989-01-01 00:00:00
abstract：:Prior reports have described a transient and focal decline in transcranial magnetic stimulation (TMS)-induced motor evoked potential (MEP) amplitude following fatiguing motor tasks. However, the neurophysiological causes of this change in MEP amplitude are unknown. The aim of this study was to determine whether post-t...
journal_title：Experimental brain research
pub_type： 杂志文章
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更新日期：2012-02-01 00:00:00
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journal_title：Experimental brain research
pub_type： 临床试验,杂志文章
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更新日期：2002-05-01 00:00:00
abstract：:Descending control is critically important for the generation of locomotor activities. Yet, our understanding of the descending control system of locomotion is limited. We hypothesized that stimulation of the ventrolateral funiculus (VLF) induces rhythmic activity in lumbar neurons that is correlated with locomotor-li...
journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/s00221-011-2816-7
更新日期：2011-09-01 00:00:00
