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 acceleration is produced along the bitemporal axis when oscillating along the naso-occipital axis, and along the naso-occipital axis when oscillating along the bitemporal axis. Together, these components generate an elliptically rotating acceleration vector that revolves around the head in the direction of rotation at the frequency of oscillation. Here we studied the orienting and compensatory responses of rabbits during TWR. Combinations of centripetal and translational accelerations were held constant at 0.5 g, and oscillation frequencies were varied from 0.01-0.33 Hz. The amplitude of the Coriolis acceleration increased with the frequency of translation. Naso-occipital translation caused vergence and pitch at all frequencies and roll at higher frequencies, and bitemporal translation produced roll at all frequencies and vergence and pitch at higher frequencies. The sensitivity of each ocular orienting component to linear acceleration was comparable across the different oscillation frequencies. TWR also induced continuous yaw nystagmus with slow phase velocity in the direction of rotation of the acceleration vector. Thresholds for appearance of nystagmus were 0.05 Hz, corresponding to a Coriolis acceleration of 0.06 g. Mean slow phase velocity for a rotating linear acceleration vector produced by 0.5 g along the translation axis and 0.34 g of Coriolis acceleration along the orthogonal axis were approximately 9 degrees /s. Eye velocities during TWR were similar to those generated by off-vertical axis rotation (OVAR), but were opposite in direction with regard to head rotation, following the direction of the rotating acceleration vector in both paradigms. Both are produced by activation of velocity storage in the vestibular system. One important difference between TWR and OVAR is that the head is always upright with regard to gravity during TWR. We speculate that the brain may use these low amplitude rotating linear accelerations to generate eye velocities that help to orient gaze when making turns during normal locomotion.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Maruta J,Simpson JI,Raphan T,Cohen Bdoi
10.1007/s00221-004-2178-5keywords:
subject
Has Abstractpub_date
2005-06-01 00:00:00pages
273-83issue
3eissn
0014-4819issn
1432-1106journal_volume
163pub_type
杂志文章abstract::The study aimed to compare the ability of dance and non-dance subjects to perform fine control of a simple heel-raising/lowering movement, and to determine if there are any differences in motor unit activity in the primary plantar flexor muscles during the movement. Subjects were instructed to accurately track a sinus...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-017-5131-0
更新日期:2018-02-01 00:00:00
abstract::Middle cerebral artery occlusion (MCAO) models have become well established as the most suitable way to simulate stroke in experimental studies. The high variability in the size of the resulting infarct due to filament composition, rodent strain and vessel anatomy makes the setup of such models very complex. Beside co...
journal_title:Experimental brain research
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00221-012-3296-0
更新日期:2013-01-01 00:00:00
abstract::The hand, one of the most versatile but mechanically redundant parts of the human body, suffers more and longer than other body parts after stroke. One of the rehabilitation paradigms, task-oriented rehabilitation, encourages motor repeatability, the ability to produce similar motor performance over repetitions throug...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-017-5074-5
更新日期:2017-12-01 00:00:00
abstract::A growing number of studies investigated anisotropies in representations of horizontal and vertical spaces. In humans, compelling evidence for such anisotropies exists for representations of multi-floor buildings. In contrast, evidence regarding open spaces is indecisive. Our study aimed at further enhancing the under...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-018-5337-9
更新日期:2018-10-01 00:00:00
abstract::This study examined c-fos protein expression in the brain and spinal cord of rats following permanent occlusion of the middle cerebral artery (MCA) above the rhinal fissure. At 1 h after right-sided MCA occlusion, Fos-like immunoreactivity (Fos-LI) was detected in neurons not only in the ipsilateral cerebral cortex bu...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/pl00005672
更新日期:1997-06-01 00:00:00
abstract::This review summarizes anatomical and electrophysiological observations related to corticovestibular interactions as a step toward understanding their possible functions. Vestibular information is represented in at least three distinct regions of the cerebral cortex in cats and monkeys: the parietal and somatosensory ...
journal_title:Experimental brain research
pub_type: 杂志文章,评审
doi:10.1007/pl00005786
更新日期:1997-10-01 00:00:00
abstract::The repetition of muscle contractions is likely to generate fatigue which can provoke alterations of postural control. Regulatory mechanisms can be triggered to counteract these alterations. However, these mechanisms would occur only when fatigue is induced through voluntary (VOL) contractions and not with electricall...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-018-5418-9
更新日期:2019-02-01 00:00:00
abstract::Human gait is a complex process in the central nervous system that results from the integrity of various mechanisms, including different cortical and subcortical structures. In the present study, we investigated cortical activity during lower limb movement using EEG. Assisted by a dynamic tilt table, all subjects perf...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-010-2223-5
更新日期:2010-05-01 00:00:00
abstract::The organization of corticocortical connections in the representation of the forepaw in cat primary somatosensory cortex (SI) was studied following injections of various tracers into different cortical cytoarchitectonic areas. Small injections of horseradish peroxidase, wheat germ agglutinin-conjugated HRP, Phaseolus ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00227839
更新日期:1992-01-01 00:00:00
abstract::Given the number of muscles and joints of the arm, more ways are available to produce an identical hand movement when pointing to a target than are strictly necessary. How the nervous system manages these abundant degrees of freedom was the focus of this study of pointing to targets of low and high indices of difficul...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-002-1357-5
更新日期:2003-04-01 00:00:00
abstract::The present study investigated age-related changes in the attentional demands associated with interlimb coordination involving upper and lower limbs performed at three different movement frequencies. Younger and older adults performed rhythmical, 180° out-of-phase flexion-extension movements of the knee and elbow with...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-013-3511-7
更新日期:2013-06-01 00:00:00
abstract::The aim of the study was to investigate grip-load force regulation in Huntington's disease (HD) patients as compared to control subjects during the performance of a manipulative task that required rhythmical unimanual or bimanual isodirectional/non-isodirectional actions in the sagittal plane. Results showed that the ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-001-0992-6
更新日期:2002-04-01 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::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
pub_type: 杂志文章
doi:10.1007/s00221-010-2470-5
更新日期:2011-01-01 00:00:00
abstract::Vestibular influences on outflow from the spinal cord are largely mediated via spinal interneurons, although few studies have recorded interneuronal activity during labyrinthine stimulation. The present study determined the responses of upper thoracic interneurons of decerebrate cats to electrical stimulation of the v...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-009-1754-0
更新日期:2009-05-01 00:00:00
abstract::The purpose of this study was to investigate the time-course of corticospinal excitability during reaction time (RT), and compare the excitability when a precue provided information regarding both the direction and extent of the upcoming movement ('Full' condition), specified the direction of the upcoming movement onl...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-003-1772-2
更新日期:2004-05-01 00:00:00
abstract::The present study investigated the effect of auditory feedback on planning and control of two-segment reaching movements and eye-hand coordination. In particular, it was examined whether additional auditory information indicating the progression of the initial reach (i.e., passing the midway and contacting the target)...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-018-5366-4
更新日期:2018-12-01 00:00:00
abstract::To promote motor learning, robotic devices have been used to improve subjects' performance by guiding desired movements (haptic guidance-HG) or by artificially increasing movement errors to foster a more rapid learning (error amplification-EA). To better understand the neurophysiological basis of motor learning, a few...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-018-5365-5
更新日期:2018-11-01 00:00:00
abstract::In anaesthetized cats (chloralose-urethan) the effects of brief tetanic electrical stimulation (50 to 100 ms) of the mesencephalic central gray matter and reticular formation on the inspiratory on-switch were studied during the expiratory (E) phase on the gross and unitary activities of phrenic, laryngeal inspiratory ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00237270
更新日期:1984-01-01 00:00:00
abstract::The dorsal and ventral streams model of action and perception suggests that reaching to grasp a tool for use involves integrated operation of the two streams. Few attempts have been made to test the limits of this integration in normal subjects. Twenty normal subjects reached for tools or geometric objects which were ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-013-3501-9
更新日期:2013-06-01 00:00:00
abstract::It is known that non-clinical subjects with high levels of schizotypal personality traits (High-S), as well as schizophrenic patients, have difficulties to judge how a scene would appear (so-called Appearance questions) from a point of view other than their own after having performed a disembodied perspective taking (...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-014-3991-0
更新日期:2014-10-01 00:00:00
abstract::The ability to control speed and accuracy of goal directed aiming tasks underpins many activities of daily living. Recent evidence has begun to suggest that obesity can affect the control of movement. This study evaluated perceptual motor control of 183 normal weight, overweight, and obese participants using a discret...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-018-5330-3
更新日期:2018-10-01 00:00:00
abstract::The size-weight illusion induced by visually perceived sizes was reexamined to investigate whether this illusion is a sensory based or cognitive-based phenomenon. A computer-augmented environment was utilized to manipulate visual size information of target objects independently of their haptic information. Two physica...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-006-0803-1
更新日期:2007-05-01 00:00:00
abstract::A compensatory stepping response (CSR) is a common strategy to restore dynamic stability in response to a postural disturbance. Currently, few studies have investigated the CSR to laterally directed disturbances delivered to subjects during quiet standing. The purpose of this study was to characterize the CSR of young...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-011-2854-1
更新日期:2011-10-01 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
abstract::The nature of spontaneous unitary activity of rat neocortex was investigated during slow wave sleep and urethane anaesthesia. Neurones in layer IV and V locations fired in a burst-pause pattern at a low burst repetition rate (0.5-4 per second) during both stage 3/4 sleep and urethane anaesthesia. Occasionally an alter...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF00237474
更新日期:1986-01-01 00:00:00
abstract::While mechanisms of orienting attention in unilateral spatial neglect (USN) have frequently been studied in the visual domain, these mechanisms remain relatively unexplored in the auditory domain. Our first goal was to replicate Spence and Driver's (J Exp Psychol Hum 22:1005-1030, 1994) results with a virtual reality ...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-016-4691-8
更新日期:2016-10-01 00:00:00
abstract::This study aimed to examine the effect of explicit cuing on reactive stepping with the paretic limb during slip-like perturbations in stroke survivors and to identify differences in postural stability and fall-risk while stepping with either limb. Eleven chronic hemiparetic stroke survivors received slip-like stance p...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-015-4367-9
更新日期:2015-11-01 00:00:00
abstract::Motor learning in the vestibular system can be differentially obtained depending upon the context for which the vestibulo-ocular reflex (VOR) has been exposed. Manipulating head orientation relative to gravity is an example of a contextual cue that can elicit independent VOR gains. We were interested in examining rete...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/s00221-008-1289-9
更新日期:2008-05-01 00:00:00
abstract::We studied visuomotor processing in the middle (MS) and lateral suprasylvian (LS) cortices of the alert cat by making single cell recordings while the cat was working in a behavioral task requiring visual fixation and visually guided eye movements. We found responses with three different components: visual sensory, sa...
journal_title:Experimental brain research
pub_type: 杂志文章
doi:10.1007/BF02259125
更新日期:1992-01-01 00:00:00